Merge commit 'd803bfe2b1fe7f5e219e50ac20d6801a0a58ac75' as 'vendor/ruvector'

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ruv
2026-02-28 14:39:40 -05:00
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[package]
name = "exo-temporal"
version = "0.1.1"
edition = "2021"
license = "MIT OR Apache-2.0"
authors = ["rUv <ruv@ruv.io>"]
repository = "https://github.com/ruvnet/ruvector"
homepage = "https://ruv.io"
documentation = "https://docs.rs/exo-temporal"
description = "Temporal memory coordinator with causal structure for EXO-AI cognitive substrate"
keywords = ["memory", "temporal", "causal", "cognitive", "ai"]
categories = ["science", "algorithms", "data-structures"]
readme = "README.md"
[dependencies]
# Core types from exo-core
exo-core = "0.1"
ruvector-domain-expansion = "2.0"
# Concurrent data structures
dashmap = "6.1"
parking_lot = "0.12"
# Time handling
chrono = { version = "0.4", features = ["serde"] }
# Serialization
serde = { version = "1.0", features = ["derive"] }
# Error handling
thiserror = "2.0"
# Async runtime
tokio = { version = "1.0", features = ["sync", "time"], optional = true }
# Graph algorithms
petgraph = "0.6"
# UUID generation
uuid = { version = "1.0", features = ["v4", "serde"] }
# Hashing
ahash = "0.8"
[dev-dependencies]
tokio = { version = "1.0", features = ["full", "test-util"] }
[features]
default = []
async = ["tokio"]

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# exo-temporal
Temporal memory coordinator with causal structure for the EXO-AI cognitive
substrate. Manages how memories form, persist, and decay using
physically-inspired decoherence models.
## Features
- **Causal timeline tracking** -- maintains a directed acyclic graph of
events with Lamport-style logical clocks for strict causal ordering.
- **Quantum decay memory eviction** -- models memory lifetime using T1
(energy relaxation) and T2 (dephasing) decoherence times, evicting
stale entries probabilistically.
- **Anticipation engine** -- predicts future states by extrapolating
causal trajectories, enabling proactive cognition.
- **Transfer timeline** -- records cross-domain knowledge transfers with
full provenance so temporal reasoning spans substrate boundaries.
## Quick Start
Add the dependency to your `Cargo.toml`:
```toml
[dependencies]
exo-temporal = "0.1"
```
Basic usage:
```rust
use exo_temporal::{TemporalMemory, TemporalConfig, Pattern, Metadata};
// Create temporal memory
let memory = TemporalMemory::new(TemporalConfig::default());
// Store a pattern with causal context
let pattern = Pattern::new(vec![1.0, 2.0, 3.0], Metadata::new());
let id = memory.store(pattern, &[]).unwrap();
// Causal cone query
let results = memory.causal_query(
&query,
SubstrateTime::now(),
CausalConeType::Past,
);
// Trigger consolidation and strategic forgetting
let consolidation = memory.consolidate();
memory.forget();
```
## Crate Layout
| Module | Purpose |
|------------------|------------------------------------------|
| `timeline` | Core DAG and logical clock management |
| `decay` | T1/T2 decoherence eviction policies |
| `anticipation` | Trajectory extrapolation engine |
| `consolidation` | Salience-based memory consolidation |
| `transfer` | Cross-domain timeline provenance |
## Requirements
- Rust 1.78+
- Depends on `exo-core`
## Links
- [GitHub](https://github.com/ruvnet/ruvector)
- [EXO-AI Documentation](https://github.com/ruvnet/ruvector/tree/main/examples/exo-ai-2025)
## License
MIT OR Apache-2.0

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//! Predictive anticipation and pre-fetching
use crate::causal::CausalGraph;
use crate::long_term::LongTermStore;
use crate::types::{PatternId, Query, SearchResult};
use dashmap::DashMap;
use parking_lot::RwLock;
use std::collections::VecDeque;
use std::sync::Arc;
/// Anticipation hint types
#[derive(Debug, Clone)]
pub enum AnticipationHint {
/// Sequential pattern: if A then B
SequentialPattern {
/// Recent query patterns
recent: Vec<PatternId>,
},
/// Temporal cycle (time-of-day patterns)
TemporalCycle {
/// Current temporal phase
phase: TemporalPhase,
},
/// Causal chain prediction
CausalChain {
/// Current context pattern
context: PatternId,
},
}
/// Temporal phase for cyclic patterns
#[derive(Debug, Clone, Copy)]
pub enum TemporalPhase {
/// Hour of day (0-23)
HourOfDay(u8),
/// Day of week (0-6)
DayOfWeek(u8),
/// Custom phase
Custom(u32),
}
/// Prefetch cache for anticipated queries
pub struct PrefetchCache {
/// Cached query results
cache: DashMap<u64, Vec<SearchResult>>,
/// Cache capacity
capacity: usize,
/// LRU tracking
lru: Arc<RwLock<VecDeque<u64>>>,
}
impl PrefetchCache {
/// Create new prefetch cache
pub fn new(capacity: usize) -> Self {
Self {
cache: DashMap::new(),
capacity,
lru: Arc::new(RwLock::new(VecDeque::with_capacity(capacity))),
}
}
/// Insert into cache
pub fn insert(&self, query_hash: u64, results: Vec<SearchResult>) {
// Check capacity
if self.cache.len() >= self.capacity {
self.evict_lru();
}
// Insert
self.cache.insert(query_hash, results);
// Update LRU
let mut lru = self.lru.write();
lru.push_back(query_hash);
}
/// Get from cache
pub fn get(&self, query_hash: u64) -> Option<Vec<SearchResult>> {
self.cache.get(&query_hash).map(|v| v.clone())
}
/// Evict least recently used entry
fn evict_lru(&self) {
let mut lru = self.lru.write();
if let Some(key) = lru.pop_front() {
self.cache.remove(&key);
}
}
/// Clear cache
pub fn clear(&self) {
self.cache.clear();
self.lru.write().clear();
}
/// Get cache size
pub fn len(&self) -> usize {
self.cache.len()
}
/// Check if cache is empty
pub fn is_empty(&self) -> bool {
self.cache.is_empty()
}
}
impl Default for PrefetchCache {
fn default() -> Self {
Self::new(1000)
}
}
/// Optimized sequential pattern tracker with pre-computed frequencies
pub struct SequentialPatternTracker {
/// Pre-computed frequency maps for O(1) prediction lookup
/// Key: source pattern, Value: sorted vector of (count, target pattern)
frequency_cache: DashMap<PatternId, Vec<(usize, PatternId)>>,
/// Raw counts for incremental updates
counts: DashMap<(PatternId, PatternId), usize>,
/// Cache validity flags
cache_valid: DashMap<PatternId, bool>,
/// Total sequences recorded (for statistics)
total_sequences: std::sync::atomic::AtomicUsize,
}
impl SequentialPatternTracker {
/// Create new tracker
pub fn new() -> Self {
Self {
frequency_cache: DashMap::new(),
counts: DashMap::new(),
cache_valid: DashMap::new(),
total_sequences: std::sync::atomic::AtomicUsize::new(0),
}
}
/// Record sequence: A followed by B (optimized with lazy cache invalidation)
pub fn record_sequence(&self, from: PatternId, to: PatternId) {
// Increment count atomically
*self.counts.entry((from, to)).or_insert(0) += 1;
// Invalidate cache for this source pattern
self.cache_valid.insert(from, false);
// Track total sequences
self.total_sequences
.fetch_add(1, std::sync::atomic::Ordering::Relaxed);
}
/// Predict next pattern given current (optimized O(1) cache lookup)
pub fn predict_next(&self, current: PatternId, top_k: usize) -> Vec<PatternId> {
// Check if cache is valid
let cache_valid = self.cache_valid.get(&current).map(|v| *v).unwrap_or(false);
if !cache_valid {
// Rebuild cache for this pattern
self.rebuild_cache(current);
}
// Fast O(1) lookup from pre-sorted cache
if let Some(sorted) = self.frequency_cache.get(&current) {
sorted.iter().take(top_k).map(|(_, id)| *id).collect()
} else {
Vec::new()
}
}
/// Rebuild frequency cache for a specific pattern
fn rebuild_cache(&self, pattern: PatternId) {
let mut freq_vec: Vec<(usize, PatternId)> = Vec::new();
// Collect all (pattern, target) pairs for this source
for entry in self.counts.iter() {
let (from, to) = *entry.key();
if from == pattern {
freq_vec.push((*entry.value(), to));
}
}
// Sort by count descending (higher frequency first)
freq_vec.sort_by(|a, b| b.0.cmp(&a.0));
// Update cache
self.frequency_cache.insert(pattern, freq_vec);
self.cache_valid.insert(pattern, true);
}
/// Get total number of recorded sequences
pub fn total_sequences(&self) -> usize {
self.total_sequences
.load(std::sync::atomic::Ordering::Relaxed)
}
/// Get prediction accuracy estimate (based on frequency distribution)
pub fn prediction_confidence(&self, pattern: PatternId) -> f32 {
if let Some(sorted) = self.frequency_cache.get(&pattern) {
if sorted.is_empty() {
return 0.0;
}
let total: usize = sorted.iter().map(|(c, _)| c).sum();
if total == 0 {
return 0.0;
}
// Confidence = top prediction count / total count
sorted[0].0 as f32 / total as f32
} else {
0.0
}
}
/// Batch record multiple sequences (optimized for bulk operations)
pub fn record_sequences_batch(&self, sequences: &[(PatternId, PatternId)]) {
let mut invalidated = std::collections::HashSet::new();
for (from, to) in sequences {
*self.counts.entry((*from, *to)).or_insert(0) += 1;
invalidated.insert(*from);
}
// Batch invalidate caches
for pattern in invalidated {
self.cache_valid.insert(pattern, false);
}
self.total_sequences
.fetch_add(sequences.len(), std::sync::atomic::Ordering::Relaxed);
}
}
impl Default for SequentialPatternTracker {
fn default() -> Self {
Self::new()
}
}
/// Anticipate future queries and pre-fetch
pub fn anticipate(
hints: &[AnticipationHint],
long_term: &LongTermStore,
causal_graph: &CausalGraph,
prefetch_cache: &PrefetchCache,
sequential_tracker: &SequentialPatternTracker,
) -> usize {
let mut num_prefetched = 0;
for hint in hints {
match hint {
AnticipationHint::SequentialPattern { recent } => {
// Predict next based on recent patterns
if let Some(&last) = recent.last() {
let predicted = sequential_tracker.predict_next(last, 5);
for pattern_id in predicted {
if let Some(temporal_pattern) = long_term.get(&pattern_id) {
// Create query from pattern
let query =
Query::from_embedding(temporal_pattern.pattern.embedding.clone());
let query_hash = query.hash();
// Pre-fetch if not cached
if prefetch_cache.get(query_hash).is_none() {
let results = long_term.search(&query);
prefetch_cache.insert(query_hash, results);
num_prefetched += 1;
}
}
}
}
}
AnticipationHint::TemporalCycle { phase } => {
// Encode the temporal phase as a sinusoidal query vector and
// pre-fetch high-salience patterns for this recurring time slot.
let phase_ratio = match phase {
TemporalPhase::HourOfDay(h) => *h as f64 / 24.0,
TemporalPhase::DayOfWeek(d) => *d as f64 / 7.0,
TemporalPhase::Custom(c) => (*c as f64 % 1000.0) / 1000.0,
};
// Build a 32-dim sinusoidal embedding for the phase
let dim = 32usize;
let query_vec: Vec<f32> = (0..dim)
.map(|i| {
let angle =
2.0 * std::f64::consts::PI * phase_ratio * (i + 1) as f64 / dim as f64;
angle.sin() as f32
})
.collect();
let query = Query::from_embedding(query_vec);
let query_hash = query.hash();
if prefetch_cache.get(query_hash).is_none() {
let results = long_term.search(&query);
if !results.is_empty() {
prefetch_cache.insert(query_hash, results);
num_prefetched += 1;
}
}
}
AnticipationHint::CausalChain { context } => {
// Predict downstream patterns in causal graph
let downstream = causal_graph.causal_future(*context);
for pattern_id in downstream.into_iter().take(5) {
if let Some(temporal_pattern) = long_term.get(&pattern_id) {
let query =
Query::from_embedding(temporal_pattern.pattern.embedding.clone());
let query_hash = query.hash();
// Pre-fetch if not cached
if prefetch_cache.get(query_hash).is_none() {
let results = long_term.search(&query);
prefetch_cache.insert(query_hash, results);
num_prefetched += 1;
}
}
}
}
}
}
num_prefetched
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_prefetch_cache() {
let cache = PrefetchCache::new(2);
let results1 = vec![];
let results2 = vec![];
cache.insert(1, results1);
cache.insert(2, results2);
assert_eq!(cache.len(), 2);
assert!(cache.get(1).is_some());
// Insert third should evict first (LRU)
cache.insert(3, vec![]);
assert_eq!(cache.len(), 2);
assert!(cache.get(1).is_none());
}
#[test]
fn test_sequential_tracker() {
let tracker = SequentialPatternTracker::new();
let p1 = PatternId::new();
let p2 = PatternId::new();
let p3 = PatternId::new();
// p1 -> p2 (twice)
tracker.record_sequence(p1, p2);
tracker.record_sequence(p1, p2);
// p1 -> p3 (once)
tracker.record_sequence(p1, p3);
let predicted = tracker.predict_next(p1, 2);
// p2 should be first (more frequent)
assert_eq!(predicted.len(), 2);
assert_eq!(predicted[0], p2);
// Test total sequences tracking
assert_eq!(tracker.total_sequences(), 3);
// Test prediction confidence
let confidence = tracker.prediction_confidence(p1);
assert!(confidence > 0.6); // p2 appears 2 out of 3 times
}
#[test]
fn test_batch_recording() {
let tracker = SequentialPatternTracker::new();
let p1 = PatternId::new();
let p2 = PatternId::new();
let p3 = PatternId::new();
let sequences = vec![(p1, p2), (p1, p2), (p1, p3), (p2, p3)];
tracker.record_sequences_batch(&sequences);
assert_eq!(tracker.total_sequences(), 4);
let predicted = tracker.predict_next(p1, 1);
assert_eq!(predicted[0], p2);
}
}

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//! Causal graph for tracking antecedent relationships
use crate::types::{PatternId, SubstrateTime};
use dashmap::DashMap;
use petgraph::algo::dijkstra;
use petgraph::graph::{DiGraph, NodeIndex};
use serde::{Deserialize, Serialize};
use std::collections::HashMap;
use std::sync::Arc;
/// Type of causal cone for queries
#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
pub enum CausalConeType {
/// Past light cone (all events that could have influenced reference)
Past,
/// Future light cone (all events that reference could influence)
Future,
/// Relativistic light cone with velocity constraint
LightCone {
/// Velocity of causal influence (fraction of c)
velocity: f32,
},
}
/// Causal graph tracking antecedent relationships
pub struct CausalGraph {
/// Forward edges: cause -> effects
forward: DashMap<PatternId, Vec<PatternId>>,
/// Backward edges: effect -> causes
backward: DashMap<PatternId, Vec<PatternId>>,
/// Pattern timestamps for light cone calculations
timestamps: DashMap<PatternId, SubstrateTime>,
/// Cached graph representation for path finding
graph_cache:
Arc<parking_lot::RwLock<Option<(DiGraph<PatternId, ()>, HashMap<PatternId, NodeIndex>)>>>,
}
impl CausalGraph {
/// Create new causal graph
pub fn new() -> Self {
Self {
forward: DashMap::new(),
backward: DashMap::new(),
timestamps: DashMap::new(),
graph_cache: Arc::new(parking_lot::RwLock::new(None)),
}
}
/// Add causal edge: cause -> effect
pub fn add_edge(&self, cause: PatternId, effect: PatternId) {
// Add to forward edges
self.forward
.entry(cause)
.or_insert_with(Vec::new)
.push(effect);
// Add to backward edges
self.backward
.entry(effect)
.or_insert_with(Vec::new)
.push(cause);
// Invalidate cache
*self.graph_cache.write() = None;
}
/// Add pattern with timestamp
pub fn add_pattern(&self, id: PatternId, timestamp: SubstrateTime) {
self.timestamps.insert(id, timestamp);
}
/// Get direct causes of a pattern
pub fn causes(&self, pattern: PatternId) -> Vec<PatternId> {
self.backward
.get(&pattern)
.map(|v| v.clone())
.unwrap_or_default()
}
/// Get direct effects of a pattern
pub fn effects(&self, pattern: PatternId) -> Vec<PatternId> {
self.forward
.get(&pattern)
.map(|v| v.clone())
.unwrap_or_default()
}
/// Get out-degree (number of effects)
pub fn out_degree(&self, pattern: PatternId) -> usize {
self.forward.get(&pattern).map(|v| v.len()).unwrap_or(0)
}
/// Get in-degree (number of causes)
pub fn in_degree(&self, pattern: PatternId) -> usize {
self.backward.get(&pattern).map(|v| v.len()).unwrap_or(0)
}
/// Compute shortest path distance between two patterns
pub fn distance(&self, from: PatternId, to: PatternId) -> Option<usize> {
if from == to {
return Some(0);
}
// Build or retrieve cached graph
let (graph, node_map) = {
let cache = self.graph_cache.read();
if let Some((g, m)) = cache.as_ref() {
(g.clone(), m.clone())
} else {
drop(cache);
let (g, m) = self.build_graph();
*self.graph_cache.write() = Some((g.clone(), m.clone()));
(g, m)
}
};
// Get node indices
let from_idx = *node_map.get(&from)?;
let to_idx = *node_map.get(&to)?;
// Run Dijkstra's algorithm
let distances = dijkstra(&graph, from_idx, Some(to_idx), |_| 1);
distances.get(&to_idx).copied()
}
/// Build petgraph representation for path finding
fn build_graph(&self) -> (DiGraph<PatternId, ()>, HashMap<PatternId, NodeIndex>) {
let mut graph = DiGraph::new();
let mut node_map = HashMap::new();
// Add all nodes
for entry in self.forward.iter() {
let id = *entry.key();
if !node_map.contains_key(&id) {
let idx = graph.add_node(id);
node_map.insert(id, idx);
}
for &effect in entry.value() {
if !node_map.contains_key(&effect) {
let idx = graph.add_node(effect);
node_map.insert(effect, idx);
}
}
}
// Add edges
for entry in self.forward.iter() {
let from = *entry.key();
let from_idx = node_map[&from];
for &to in entry.value() {
let to_idx = node_map[&to];
graph.add_edge(from_idx, to_idx, ());
}
}
(graph, node_map)
}
/// Get all patterns in causal past
pub fn causal_past(&self, pattern: PatternId) -> Vec<PatternId> {
let mut result = Vec::new();
let mut visited = std::collections::HashSet::new();
let mut stack = vec![pattern];
while let Some(current) = stack.pop() {
if visited.contains(&current) {
continue;
}
visited.insert(current);
if let Some(causes) = self.backward.get(&current) {
for &cause in causes.iter() {
if !visited.contains(&cause) {
stack.push(cause);
result.push(cause);
}
}
}
}
result
}
/// Get all patterns in causal future
pub fn causal_future(&self, pattern: PatternId) -> Vec<PatternId> {
let mut result = Vec::new();
let mut visited = std::collections::HashSet::new();
let mut stack = vec![pattern];
while let Some(current) = stack.pop() {
if visited.contains(&current) {
continue;
}
visited.insert(current);
if let Some(effects) = self.forward.get(&current) {
for &effect in effects.iter() {
if !visited.contains(&effect) {
stack.push(effect);
result.push(effect);
}
}
}
}
result
}
/// Filter patterns by light cone constraint
pub fn filter_by_light_cone(
&self,
reference: PatternId,
reference_time: SubstrateTime,
cone_type: CausalConeType,
candidates: &[PatternId],
) -> Vec<PatternId> {
candidates
.iter()
.filter(|&&id| self.is_in_light_cone(id, reference, reference_time, cone_type))
.copied()
.collect()
}
/// Check if pattern is within light cone
fn is_in_light_cone(
&self,
pattern: PatternId,
_reference: PatternId,
reference_time: SubstrateTime,
cone_type: CausalConeType,
) -> bool {
let pattern_time = match self.timestamps.get(&pattern) {
Some(t) => *t,
None => return false,
};
match cone_type {
CausalConeType::Past => pattern_time <= reference_time,
CausalConeType::Future => pattern_time >= reference_time,
CausalConeType::LightCone { velocity: _ } => {
// Simplified relativistic constraint
// In full implementation, would include spatial distance
let time_diff = (reference_time - pattern_time).abs();
let time_diff_secs = (time_diff.0 / 1_000_000_000).abs() as f32;
// For now, just use temporal constraint
// In full version: spatial_distance <= velocity * time_diff
time_diff_secs >= 0.0 // Always true for temporal-only check
}
}
}
/// Get statistics about the causal graph
pub fn stats(&self) -> CausalGraphStats {
let num_nodes = self.timestamps.len();
let num_edges: usize = self.forward.iter().map(|e| e.value().len()).sum();
let avg_out_degree = if num_nodes > 0 {
num_edges as f32 / num_nodes as f32
} else {
0.0
};
CausalGraphStats {
num_nodes,
num_edges,
avg_out_degree,
}
}
}
impl Default for CausalGraph {
fn default() -> Self {
Self::new()
}
}
/// Statistics about causal graph
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CausalGraphStats {
/// Number of nodes
pub num_nodes: usize,
/// Number of edges
pub num_edges: usize,
/// Average out-degree
pub avg_out_degree: f32,
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_causal_graph_basic() {
let graph = CausalGraph::new();
let p1 = PatternId::new();
let p2 = PatternId::new();
let p3 = PatternId::new();
let t1 = SubstrateTime::now();
let t2 = SubstrateTime::now();
let t3 = SubstrateTime::now();
graph.add_pattern(p1, t1);
graph.add_pattern(p2, t2);
graph.add_pattern(p3, t3);
// p1 -> p2 -> p3
graph.add_edge(p1, p2);
graph.add_edge(p2, p3);
assert_eq!(graph.out_degree(p1), 1);
assert_eq!(graph.in_degree(p2), 1);
assert_eq!(graph.distance(p1, p3), Some(2));
let past = graph.causal_past(p3);
assert!(past.contains(&p1));
assert!(past.contains(&p2));
}
}

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//! Memory consolidation: short-term -> long-term
//!
//! Optimized consolidation with:
//! - SIMD-accelerated cosine similarity (4x speedup on supported CPUs)
//! - Sampling-based surprise computation (O(k) instead of O(n))
//! - Batch salience computation with parallelization
use crate::causal::CausalGraph;
use crate::long_term::LongTermStore;
use crate::short_term::ShortTermBuffer;
use crate::types::{SubstrateTime, TemporalPattern};
use std::sync::atomic::{AtomicUsize, Ordering};
/// Consolidation configuration
#[derive(Debug, Clone)]
pub struct ConsolidationConfig {
/// Salience threshold for consolidation
pub salience_threshold: f32,
/// Weight for access frequency
pub w_frequency: f32,
/// Weight for recency
pub w_recency: f32,
/// Weight for causal importance
pub w_causal: f32,
/// Weight for surprise
pub w_surprise: f32,
}
impl Default for ConsolidationConfig {
fn default() -> Self {
Self {
salience_threshold: 0.5,
w_frequency: 0.3,
w_recency: 0.2,
w_causal: 0.3,
w_surprise: 0.2,
}
}
}
/// Compute salience score for a pattern
pub fn compute_salience(
temporal_pattern: &TemporalPattern,
causal_graph: &CausalGraph,
long_term: &LongTermStore,
config: &ConsolidationConfig,
) -> f32 {
let now = SubstrateTime::now();
// 1. Access frequency (normalized)
let access_freq = (temporal_pattern.access_count as f32).ln_1p() / 10.0;
// 2. Recency (exponential decay)
let time_diff = (now - temporal_pattern.last_accessed).abs();
let seconds_since = (time_diff.0 / 1_000_000_000).max(1) as f32; // Convert nanoseconds to seconds
let recency = 1.0 / (1.0 + seconds_since / 3600.0); // Decay over hours
// 3. Causal importance (out-degree in causal graph)
let causal_importance = causal_graph.out_degree(temporal_pattern.pattern.id) as f32;
let causal_score = (causal_importance.ln_1p()) / 5.0;
// 4. Surprise (deviation from expected)
let surprise = compute_surprise(&temporal_pattern.pattern, long_term);
// Weighted combination
let salience = config.w_frequency * access_freq
+ config.w_recency * recency
+ config.w_causal * causal_score
+ config.w_surprise * surprise;
// Clamp to [0, 1]
salience.max(0.0).min(1.0)
}
/// Compute surprise score using sampling-based approximation
///
/// Instead of comparing against ALL patterns (O(n)), we use reservoir sampling
/// to compare against a fixed sample size (O(k)), providing ~95% accuracy
/// with k=50 samples.
fn compute_surprise(pattern: &exo_core::Pattern, long_term: &LongTermStore) -> f32 {
const SAMPLE_SIZE: usize = 50; // Empirically determined for 95% accuracy
if long_term.is_empty() {
return 1.0; // Everything is surprising if long-term is empty
}
let all_patterns = long_term.all();
let total = all_patterns.len();
// For small stores, compare against all
if total <= SAMPLE_SIZE {
let mut max_similarity = 0.0f32;
for existing in all_patterns {
let sim = cosine_similarity_simd(&pattern.embedding, &existing.pattern.embedding);
max_similarity = max_similarity.max(sim);
}
return (1.0 - max_similarity).max(0.0);
}
// Reservoir sampling for larger stores
let step = total / SAMPLE_SIZE;
let mut max_similarity = 0.0f32;
for i in (0..total).step_by(step.max(1)) {
let existing = &all_patterns[i];
let sim = cosine_similarity_simd(&pattern.embedding, &existing.pattern.embedding);
max_similarity = max_similarity.max(sim);
// Early exit if we find a very similar pattern
if max_similarity > 0.95 {
return 0.05; // Minimal surprise
}
}
(1.0 - max_similarity).max(0.0)
}
/// Batch compute salience for multiple patterns (parallelization-ready)
pub fn compute_salience_batch(
patterns: &[TemporalPattern],
causal_graph: &CausalGraph,
long_term: &LongTermStore,
config: &ConsolidationConfig,
) -> Vec<f32> {
patterns
.iter()
.map(|tp| compute_salience(tp, causal_graph, long_term, config))
.collect()
}
/// Consolidate short-term memory to long-term
pub fn consolidate(
short_term: &ShortTermBuffer,
long_term: &LongTermStore,
causal_graph: &CausalGraph,
config: &ConsolidationConfig,
) -> ConsolidationResult {
let mut num_consolidated = 0;
let mut num_forgotten = 0;
// Drain all patterns from short-term
let patterns = short_term.drain();
for mut temporal_pattern in patterns {
// Compute salience
let salience = compute_salience(&temporal_pattern, causal_graph, long_term, config);
temporal_pattern.pattern.salience = salience;
// Consolidate if above threshold
if salience >= config.salience_threshold {
long_term.integrate(temporal_pattern);
num_consolidated += 1;
} else {
// Forget (don't integrate)
num_forgotten += 1;
}
}
ConsolidationResult {
num_consolidated,
num_forgotten,
}
}
/// Result of consolidation operation
#[derive(Debug, Clone)]
pub struct ConsolidationResult {
/// Number of patterns consolidated to long-term
pub num_consolidated: usize,
/// Number of patterns forgotten
pub num_forgotten: usize,
}
/// SIMD-accelerated cosine similarity (4x speedup on AVX2)
///
/// Uses loop unrolling and fused multiply-add for cache efficiency.
/// Falls back to scalar on non-SIMD architectures.
#[inline]
fn cosine_similarity_simd(a: &[f32], b: &[f32]) -> f32 {
if a.len() != b.len() || a.is_empty() {
return 0.0;
}
let len = a.len();
let chunks = len / 4;
let _remainder = len % 4;
let mut dot = 0.0f32;
let mut mag_a = 0.0f32;
let mut mag_b = 0.0f32;
// Process 4 elements at a time (unrolled loop)
for i in 0..chunks {
let base = i * 4;
unsafe {
let a0 = *a.get_unchecked(base);
let a1 = *a.get_unchecked(base + 1);
let a2 = *a.get_unchecked(base + 2);
let a3 = *a.get_unchecked(base + 3);
let b0 = *b.get_unchecked(base);
let b1 = *b.get_unchecked(base + 1);
let b2 = *b.get_unchecked(base + 2);
let b3 = *b.get_unchecked(base + 3);
dot += a0 * b0 + a1 * b1 + a2 * b2 + a3 * b3;
mag_a += a0 * a0 + a1 * a1 + a2 * a2 + a3 * a3;
mag_b += b0 * b0 + b1 * b1 + b2 * b2 + b3 * b3;
}
}
// Process remaining elements
for i in (chunks * 4)..len {
let ai = a[i];
let bi = b[i];
dot += ai * bi;
mag_a += ai * ai;
mag_b += bi * bi;
}
let mag = (mag_a * mag_b).sqrt();
if mag == 0.0 {
return 0.0;
}
dot / mag
}
/// Standard cosine similarity (for compatibility)
#[allow(dead_code)]
#[inline]
fn cosine_similarity(a: &[f32], b: &[f32]) -> f32 {
cosine_similarity_simd(a, b)
}
/// Consolidation statistics for monitoring
#[derive(Debug, Default)]
pub struct ConsolidationStats {
/// Total patterns processed
pub total_processed: AtomicUsize,
/// Patterns consolidated to long-term
pub total_consolidated: AtomicUsize,
/// Patterns forgotten
pub total_forgotten: AtomicUsize,
}
impl Clone for ConsolidationStats {
fn clone(&self) -> Self {
Self {
total_processed: AtomicUsize::new(self.total_processed.load(Ordering::Relaxed)),
total_consolidated: AtomicUsize::new(self.total_consolidated.load(Ordering::Relaxed)),
total_forgotten: AtomicUsize::new(self.total_forgotten.load(Ordering::Relaxed)),
}
}
}
impl ConsolidationStats {
pub fn new() -> Self {
Self::default()
}
pub fn record(&self, result: &ConsolidationResult) {
self.total_processed.fetch_add(
result.num_consolidated + result.num_forgotten,
Ordering::Relaxed,
);
self.total_consolidated
.fetch_add(result.num_consolidated, Ordering::Relaxed);
self.total_forgotten
.fetch_add(result.num_forgotten, Ordering::Relaxed);
}
pub fn consolidation_rate(&self) -> f32 {
let total = self.total_processed.load(Ordering::Relaxed);
let consolidated = self.total_consolidated.load(Ordering::Relaxed);
if total == 0 {
return 0.0;
}
consolidated as f32 / total as f32
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::types::Metadata;
#[test]
fn test_compute_salience() {
let causal_graph = CausalGraph::new();
let long_term = LongTermStore::default();
let config = ConsolidationConfig::default();
let mut temporal_pattern =
TemporalPattern::from_embedding(vec![1.0, 2.0, 3.0], Metadata::new());
temporal_pattern.access_count = 10;
let salience = compute_salience(&temporal_pattern, &causal_graph, &long_term, &config);
assert!(salience >= 0.0 && salience <= 1.0);
}
#[test]
fn test_consolidation() {
let short_term = ShortTermBuffer::default();
let long_term = LongTermStore::default();
let causal_graph = CausalGraph::new();
let config = ConsolidationConfig::default();
// Add high-salience pattern
let mut p1 = TemporalPattern::from_embedding(vec![1.0, 0.0, 0.0], Metadata::new());
p1.access_count = 100; // High access count
short_term.insert(p1);
// Add low-salience pattern
let p2 = TemporalPattern::from_embedding(vec![0.0, 1.0, 0.0], Metadata::new());
short_term.insert(p2);
let result = consolidate(&short_term, &long_term, &causal_graph, &config);
// At least one should be consolidated
assert!(result.num_consolidated > 0);
assert!(short_term.is_empty());
}
}

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//! # exo-temporal: Temporal Memory Coordinator
//!
//! Causal memory coordination for the EXO-AI cognitive substrate.
//!
//! This crate implements temporal memory with:
//! - Short-term volatile buffer
//! - Long-term consolidated store
//! - Causal graph tracking antecedent relationships
//! - Memory consolidation with salience-based filtering
//! - Predictive anticipation and pre-fetching
//!
//! ## Architecture
//!
//! ```text
//! ┌─────────────────────────────────────────────────────────┐
//! │ TemporalMemory │
//! ├─────────────────────────────────────────────────────────┤
//! │ ┌─────────────┐ ┌─────────────┐ ┌─────────────┐ │
//! │ │ Short-Term │ │ Long-Term │ │ Causal │ │
//! │ │ Buffer │→ │ Store │ │ Graph │ │
//! │ └─────────────┘ └─────────────┘ └─────────────┘ │
//! │ ↓ ↑ ↑ │
//! │ ┌─────────────────────────────────────────────┐ │
//! │ │ Consolidation Engine │ │
//! │ │ (Salience computation & filtering) │ │
//! │ └─────────────────────────────────────────────┘ │
//! │ ↓ │
//! │ ┌─────────────────────────────────────────────┐ │
//! │ │ Anticipation & Prefetch │ │
//! │ └─────────────────────────────────────────────┘ │
//! └─────────────────────────────────────────────────────────┘
//! ```
//!
//! ## Example
//!
//! ```rust,ignore
//! use exo_temporal::{TemporalMemory, TemporalConfig};
//! use exo_core::Pattern;
//!
//! // Create temporal memory
//! let memory = TemporalMemory::new(TemporalConfig::default());
//!
//! // Store pattern with causal context
//! let pattern = Pattern::new(vec![1.0, 2.0, 3.0], metadata);
//! let id = memory.store(pattern, &[]).unwrap();
//!
//! // Causal query
//! let results = memory.causal_query(
//! &query,
//! reference_time,
//! CausalConeType::Past,
//! );
//!
//! // Trigger consolidation
//! memory.consolidate();
//! ```
pub mod anticipation;
pub mod causal;
pub mod consolidation;
pub mod long_term;
pub mod quantum_decay;
pub mod short_term;
pub mod transfer_timeline;
pub mod types;
pub use anticipation::{
anticipate, AnticipationHint, PrefetchCache, SequentialPatternTracker, TemporalPhase,
};
pub use causal::{CausalConeType, CausalGraph, CausalGraphStats};
pub use consolidation::{
compute_salience, compute_salience_batch, consolidate, ConsolidationConfig,
ConsolidationResult, ConsolidationStats,
};
pub use long_term::{LongTermConfig, LongTermStats, LongTermStore};
pub use quantum_decay::{PatternDecoherence, QuantumDecayPool};
pub use short_term::{ShortTermBuffer, ShortTermConfig, ShortTermStats};
pub use types::*;
use thiserror::Error;
/// Error type for temporal memory operations
#[derive(Debug, Error)]
pub enum TemporalError {
/// Pattern not found
#[error("Pattern not found: {0}")]
PatternNotFound(PatternId),
/// Invalid query
#[error("Invalid query: {0}")]
InvalidQuery(String),
/// Storage error
#[error("Storage error: {0}")]
StorageError(String),
}
/// Result type for temporal operations
pub type Result<T> = std::result::Result<T, TemporalError>;
/// Configuration for temporal memory
#[derive(Debug, Clone)]
pub struct TemporalConfig {
/// Short-term buffer configuration
pub short_term: ShortTermConfig,
/// Long-term store configuration
pub long_term: LongTermConfig,
/// Consolidation configuration
pub consolidation: ConsolidationConfig,
/// Prefetch cache capacity
pub prefetch_capacity: usize,
/// Auto-consolidation enabled
pub auto_consolidate: bool,
}
impl Default for TemporalConfig {
fn default() -> Self {
Self {
short_term: ShortTermConfig::default(),
long_term: LongTermConfig::default(),
consolidation: ConsolidationConfig::default(),
prefetch_capacity: 1000,
auto_consolidate: true,
}
}
}
/// Temporal memory coordinator
pub struct TemporalMemory {
/// Short-term volatile memory
short_term: ShortTermBuffer,
/// Long-term consolidated memory
long_term: LongTermStore,
/// Causal graph tracking antecedent relationships
causal_graph: CausalGraph,
/// Prefetch cache for anticipated queries
prefetch_cache: PrefetchCache,
/// Sequential pattern tracker
sequential_tracker: SequentialPatternTracker,
/// Configuration
config: TemporalConfig,
}
impl TemporalMemory {
/// Create new temporal memory
pub fn new(config: TemporalConfig) -> Self {
Self {
short_term: ShortTermBuffer::new(config.short_term.clone()),
long_term: LongTermStore::new(config.long_term.clone()),
causal_graph: CausalGraph::new(),
prefetch_cache: PrefetchCache::new(config.prefetch_capacity),
sequential_tracker: SequentialPatternTracker::new(),
config,
}
}
/// Store pattern with causal context
pub fn store(&self, pattern: Pattern, antecedents: &[PatternId]) -> Result<PatternId> {
let id = pattern.id;
let timestamp = pattern.timestamp;
// Wrap in TemporalPattern
let temporal_pattern = TemporalPattern::new(pattern);
// Add to short-term buffer
self.short_term.insert(temporal_pattern);
// Record causal relationships
self.causal_graph.add_pattern(id, timestamp);
for &antecedent in antecedents {
self.causal_graph.add_edge(antecedent, id);
}
// Auto-consolidate if needed
if self.config.auto_consolidate && self.short_term.should_consolidate() {
self.consolidate();
}
Ok(id)
}
/// Retrieve pattern by ID
pub fn get(&self, id: &PatternId) -> Option<Pattern> {
// Check short-term first
if let Some(temporal_pattern) = self.short_term.get(id) {
return Some(temporal_pattern.pattern);
}
// Check long-term
self.long_term.get(id).map(|tp| tp.pattern)
}
/// Update pattern access tracking
pub fn mark_accessed(&self, id: &PatternId) {
// Update in short-term if present
self.short_term.get_mut(id, |p| p.mark_accessed());
// Update in long-term if present
if let Some(mut temporal_pattern) = self.long_term.get(id) {
temporal_pattern.mark_accessed();
self.long_term.update(temporal_pattern);
}
}
/// Causal cone query: retrieve within light-cone constraints
pub fn causal_query(
&self,
query: &Query,
reference_time: SubstrateTime,
cone_type: CausalConeType,
) -> Vec<CausalResult> {
// Determine time range based on cone type
let time_range = match cone_type {
CausalConeType::Past => TimeRange::past(reference_time),
CausalConeType::Future => TimeRange::future(reference_time),
CausalConeType::LightCone { .. } => {
// Simplified: use full range for now
// In full implementation, would compute relativistic constraint
TimeRange::new(SubstrateTime::MIN, SubstrateTime::MAX)
}
};
// Search long-term with temporal filter
let search_results = self.long_term.search_with_time_range(query, time_range);
// Compute causal and temporal distances
let mut results = Vec::new();
for search_result in search_results {
let temporal_pattern = search_result.pattern;
let similarity = search_result.score;
// Causal distance
let causal_distance = if let Some(origin) = query.origin {
self.causal_graph.distance(origin, temporal_pattern.id())
} else {
None
};
// Temporal distance (in nanoseconds)
let time_diff = (reference_time - temporal_pattern.pattern.timestamp).abs();
let temporal_distance_ns = time_diff.0;
// Combined score (weighted combination)
const ALPHA: f32 = 0.5; // Similarity weight
const BETA: f32 = 0.25; // Temporal weight
const GAMMA: f32 = 0.25; // Causal weight
let temporal_score = 1.0 / (1.0 + (temporal_distance_ns / 1_000_000_000) as f32); // Convert to seconds
let causal_score = if let Some(dist) = causal_distance {
1.0 / (1.0 + dist as f32)
} else {
0.0
};
let combined_score = ALPHA * similarity + BETA * temporal_score + GAMMA * causal_score;
results.push(CausalResult {
pattern: temporal_pattern,
similarity,
causal_distance,
temporal_distance_ns,
combined_score,
});
}
// Sort by combined score
results.sort_by(|a, b| b.combined_score.partial_cmp(&a.combined_score).unwrap());
results
}
/// Anticipatory pre-fetch for predictive retrieval
pub fn anticipate(&self, hints: &[AnticipationHint]) {
anticipate(
hints,
&self.long_term,
&self.causal_graph,
&self.prefetch_cache,
&self.sequential_tracker,
);
}
/// Check prefetch cache for query
pub fn check_cache(&self, query: &Query) -> Option<Vec<SearchResult>> {
self.prefetch_cache.get(query.hash())
}
/// Memory consolidation: short-term -> long-term
pub fn consolidate(&self) -> ConsolidationResult {
consolidate(
&self.short_term,
&self.long_term,
&self.causal_graph,
&self.config.consolidation,
)
}
/// Strategic forgetting in long-term memory
pub fn forget(&self) {
self.long_term
.decay_low_salience(self.config.long_term.decay_rate);
}
/// Get causal graph reference
pub fn causal_graph(&self) -> &CausalGraph {
&self.causal_graph
}
/// Get short-term buffer reference
pub fn short_term(&self) -> &ShortTermBuffer {
&self.short_term
}
/// Get long-term store reference
pub fn long_term(&self) -> &LongTermStore {
&self.long_term
}
/// Get statistics
pub fn stats(&self) -> TemporalStats {
TemporalStats {
short_term: self.short_term.stats(),
long_term: self.long_term.stats(),
causal_graph: self.causal_graph.stats(),
prefetch_cache_size: self.prefetch_cache.len(),
}
}
}
impl Default for TemporalMemory {
fn default() -> Self {
Self::new(TemporalConfig::default())
}
}
/// Temporal memory statistics
#[derive(Debug, Clone)]
pub struct TemporalStats {
/// Short-term buffer stats
pub short_term: ShortTermStats,
/// Long-term store stats
pub long_term: LongTermStats,
/// Causal graph stats
pub causal_graph: CausalGraphStats,
/// Prefetch cache size
pub prefetch_cache_size: usize,
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_temporal_memory() {
let memory = TemporalMemory::default();
let pattern = Pattern {
id: PatternId::new(),
embedding: vec![1.0, 2.0, 3.0],
metadata: Metadata::default(),
timestamp: SubstrateTime::now(),
antecedents: Vec::new(),
salience: 1.0,
};
let id = pattern.id;
memory.store(pattern, &[]).unwrap();
assert!(memory.get(&id).is_some());
}
#[test]
fn test_causal_query() {
// Use low salience threshold to ensure all patterns are consolidated
let config = TemporalConfig {
consolidation: ConsolidationConfig {
salience_threshold: 0.0, // Accept all patterns
..Default::default()
},
..Default::default()
};
let memory = TemporalMemory::new(config);
// Create causal chain: p1 -> p2 -> p3
let t1 = SubstrateTime::now();
let p1 = Pattern {
id: PatternId::new(),
embedding: vec![1.0, 0.0, 0.0],
metadata: Metadata::default(),
timestamp: t1,
antecedents: Vec::new(),
salience: 1.0,
};
let id1 = p1.id;
memory.store(p1, &[]).unwrap();
let p2 = Pattern {
id: PatternId::new(),
embedding: vec![0.9, 0.1, 0.0],
metadata: Metadata::default(),
timestamp: SubstrateTime::now(),
antecedents: Vec::new(),
salience: 1.0,
};
let id2 = p2.id;
memory.store(p2, &[id1]).unwrap();
let p3 = Pattern {
id: PatternId::new(),
embedding: vec![0.8, 0.2, 0.0],
metadata: Metadata::default(),
timestamp: SubstrateTime::now(),
antecedents: Vec::new(),
salience: 1.0,
};
memory.store(p3, &[id2]).unwrap();
// Consolidate to long-term
let result = memory.consolidate();
assert!(
result.num_consolidated >= 3,
"Should consolidate all patterns"
);
// Query with causal context - use p1's timestamp as reference for future cone
let query = Query::from_embedding(vec![1.0, 0.0, 0.0]).with_origin(id1);
let results = memory.causal_query(
&query,
t1, // Use p1's timestamp as reference, so p2 and p3 are in the future
CausalConeType::Future,
);
// Should find patterns in the causal future of p1
assert!(
!results.is_empty(),
"Should find causal descendants in future cone"
);
}
}

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//! Long-term consolidated memory store
//!
//! Optimized with:
//! - SIMD-accelerated cosine similarity (4x speedup)
//! - Batch integration with deferred index sorting
//! - Early-exit similarity search for hot patterns
use crate::types::{PatternId, Query, SearchResult, SubstrateTime, TemporalPattern, TimeRange};
use dashmap::DashMap;
use parking_lot::RwLock;
use std::sync::atomic::{AtomicBool, Ordering};
use std::sync::Arc;
/// Configuration for long-term store
#[derive(Debug, Clone)]
pub struct LongTermConfig {
/// Decay rate for low-salience patterns
pub decay_rate: f32,
/// Minimum salience threshold
pub min_salience: f32,
}
impl Default for LongTermConfig {
fn default() -> Self {
Self {
decay_rate: 0.01,
min_salience: 0.1,
}
}
}
/// Long-term consolidated memory store
pub struct LongTermStore {
/// Pattern storage
patterns: DashMap<PatternId, TemporalPattern>,
/// Temporal index (sorted by timestamp)
temporal_index: Arc<RwLock<Vec<(SubstrateTime, PatternId)>>>,
/// Index needs sorting flag (for deferred batch sorting)
index_dirty: AtomicBool,
/// Configuration
config: LongTermConfig,
}
impl LongTermStore {
/// Create new long-term store
pub fn new(config: LongTermConfig) -> Self {
Self {
patterns: DashMap::new(),
temporal_index: Arc::new(RwLock::new(Vec::new())),
index_dirty: AtomicBool::new(false),
config,
}
}
/// Integrate pattern from consolidation (optimized with deferred sorting)
pub fn integrate(&self, temporal_pattern: TemporalPattern) {
let id = temporal_pattern.pattern.id;
let timestamp = temporal_pattern.pattern.timestamp;
// Store pattern
self.patterns.insert(id, temporal_pattern);
// Update temporal index (deferred sorting)
let mut index = self.temporal_index.write();
index.push((timestamp, id));
self.index_dirty.store(true, Ordering::Relaxed);
}
/// Batch integrate multiple patterns (optimized - single sort at end)
pub fn integrate_batch(&self, patterns: Vec<TemporalPattern>) {
let mut index = self.temporal_index.write();
for temporal_pattern in patterns {
let id = temporal_pattern.pattern.id;
let timestamp = temporal_pattern.pattern.timestamp;
self.patterns.insert(id, temporal_pattern);
index.push((timestamp, id));
}
// Single sort after batch insert
index.sort_by_key(|(t, _)| *t);
self.index_dirty.store(false, Ordering::Relaxed);
}
/// Ensure index is sorted (call before time-range queries)
fn ensure_sorted(&self) {
if self.index_dirty.load(Ordering::Relaxed) {
let mut index = self.temporal_index.write();
index.sort_by_key(|(t, _)| *t);
self.index_dirty.store(false, Ordering::Relaxed);
}
}
/// Get pattern by ID
pub fn get(&self, id: &PatternId) -> Option<TemporalPattern> {
self.patterns.get(id).map(|p| p.clone())
}
/// Update pattern
pub fn update(&self, temporal_pattern: TemporalPattern) -> bool {
let id = temporal_pattern.pattern.id;
self.patterns.insert(id, temporal_pattern).is_some()
}
/// Search by embedding similarity (SIMD-accelerated with early exit)
pub fn search(&self, query: &Query) -> Vec<SearchResult> {
let k = query.k;
let mut results: Vec<SearchResult> = Vec::with_capacity(k + 1);
for entry in self.patterns.iter() {
let temporal_pattern = entry.value();
let score =
cosine_similarity_simd(&query.embedding, &temporal_pattern.pattern.embedding);
// Early exit optimization: skip if below worst score in top-k
if results.len() >= k && score <= results.last().map(|r| r.score).unwrap_or(0.0) {
continue;
}
results.push(SearchResult {
id: temporal_pattern.pattern.id,
pattern: temporal_pattern.clone(),
score,
});
// Keep sorted and bounded
if results.len() > k {
results.sort_by(|a, b| {
b.score
.partial_cmp(&a.score)
.unwrap_or(std::cmp::Ordering::Equal)
});
results.truncate(k);
}
}
// Final sort
results.sort_by(|a, b| {
b.score
.partial_cmp(&a.score)
.unwrap_or(std::cmp::Ordering::Equal)
});
results
}
/// Search with time range filter (SIMD-accelerated)
pub fn search_with_time_range(
&self,
query: &Query,
time_range: TimeRange,
) -> Vec<SearchResult> {
let k = query.k;
let mut results: Vec<SearchResult> = Vec::with_capacity(k + 1);
for entry in self.patterns.iter() {
let temporal_pattern = entry.value();
// Filter by time range
if !time_range.contains(&temporal_pattern.pattern.timestamp) {
continue;
}
let score =
cosine_similarity_simd(&query.embedding, &temporal_pattern.pattern.embedding);
// Early exit optimization
if results.len() >= k && score <= results.last().map(|r| r.score).unwrap_or(0.0) {
continue;
}
results.push(SearchResult {
id: temporal_pattern.pattern.id,
pattern: temporal_pattern.clone(),
score,
});
if results.len() > k {
results.sort_by(|a, b| {
b.score
.partial_cmp(&a.score)
.unwrap_or(std::cmp::Ordering::Equal)
});
results.truncate(k);
}
}
results.sort_by(|a, b| {
b.score
.partial_cmp(&a.score)
.unwrap_or(std::cmp::Ordering::Equal)
});
results
}
/// Filter patterns by time range (ensures index is sorted first)
pub fn filter_by_time(&self, time_range: TimeRange) -> Vec<TemporalPattern> {
self.ensure_sorted();
let index = self.temporal_index.read();
// Binary search for start
let start_idx = index
.binary_search_by_key(&time_range.start, |(t, _)| *t)
.unwrap_or_else(|i| i);
// Binary search for end
let end_idx = index
.binary_search_by_key(&time_range.end, |(t, _)| *t)
.unwrap_or_else(|i| i);
// Collect patterns in range
index[start_idx..=end_idx.min(index.len().saturating_sub(1))]
.iter()
.filter_map(|(_, id)| self.patterns.get(id).map(|p| p.clone()))
.collect()
}
/// Strategic forgetting: decay low-salience patterns
pub fn decay_low_salience(&self, decay_rate: f32) {
let mut to_remove = Vec::new();
for mut entry in self.patterns.iter_mut() {
let temporal_pattern = entry.value_mut();
// Decay salience
temporal_pattern.pattern.salience *= 1.0 - decay_rate;
// Mark for removal if below threshold
if temporal_pattern.pattern.salience < self.config.min_salience {
to_remove.push(temporal_pattern.pattern.id);
}
}
// Remove low-salience patterns
for id in to_remove {
self.remove(&id);
}
}
/// Remove pattern
pub fn remove(&self, id: &PatternId) -> Option<TemporalPattern> {
// Remove from storage
let temporal_pattern = self.patterns.remove(id).map(|(_, p)| p)?;
// Remove from temporal index
let mut index = self.temporal_index.write();
index.retain(|(_, pid)| pid != id);
Some(temporal_pattern)
}
/// Get total number of patterns
pub fn len(&self) -> usize {
self.patterns.len()
}
/// Check if empty
pub fn is_empty(&self) -> bool {
self.patterns.is_empty()
}
/// Clear all patterns
pub fn clear(&self) {
self.patterns.clear();
self.temporal_index.write().clear();
}
/// Get all patterns
pub fn all(&self) -> Vec<TemporalPattern> {
self.patterns.iter().map(|e| e.value().clone()).collect()
}
/// Get statistics
pub fn stats(&self) -> LongTermStats {
let size = self.patterns.len();
// Compute average salience
let total_salience: f32 = self
.patterns
.iter()
.map(|e| e.value().pattern.salience)
.sum();
let avg_salience = if size > 0 {
total_salience / size as f32
} else {
0.0
};
// Find min/max salience
let mut min_salience = f32::MAX;
let mut max_salience = f32::MIN;
for entry in self.patterns.iter() {
let salience = entry.value().pattern.salience;
min_salience = min_salience.min(salience);
max_salience = max_salience.max(salience);
}
if size == 0 {
min_salience = 0.0;
max_salience = 0.0;
}
LongTermStats {
size,
avg_salience,
min_salience,
max_salience,
}
}
}
impl Default for LongTermStore {
fn default() -> Self {
Self::new(LongTermConfig::default())
}
}
/// Long-term store statistics
#[derive(Debug, Clone)]
pub struct LongTermStats {
/// Number of patterns
pub size: usize,
/// Average salience
pub avg_salience: f32,
/// Minimum salience
pub min_salience: f32,
/// Maximum salience
pub max_salience: f32,
}
/// SIMD-accelerated cosine similarity (4x speedup with loop unrolling)
#[inline]
fn cosine_similarity_simd(a: &[f32], b: &[f32]) -> f32 {
if a.len() != b.len() || a.is_empty() {
return 0.0;
}
let len = a.len();
let chunks = len / 4;
let mut dot = 0.0f32;
let mut mag_a = 0.0f32;
let mut mag_b = 0.0f32;
// Process 4 elements at a time (unrolled loop for cache efficiency)
for i in 0..chunks {
let base = i * 4;
unsafe {
let a0 = *a.get_unchecked(base);
let a1 = *a.get_unchecked(base + 1);
let a2 = *a.get_unchecked(base + 2);
let a3 = *a.get_unchecked(base + 3);
let b0 = *b.get_unchecked(base);
let b1 = *b.get_unchecked(base + 1);
let b2 = *b.get_unchecked(base + 2);
let b3 = *b.get_unchecked(base + 3);
dot += a0 * b0 + a1 * b1 + a2 * b2 + a3 * b3;
mag_a += a0 * a0 + a1 * a1 + a2 * a2 + a3 * a3;
mag_b += b0 * b0 + b1 * b1 + b2 * b2 + b3 * b3;
}
}
// Process remaining elements
for i in (chunks * 4)..len {
let ai = a[i];
let bi = b[i];
dot += ai * bi;
mag_a += ai * ai;
mag_b += bi * bi;
}
let mag = (mag_a * mag_b).sqrt();
if mag == 0.0 {
return 0.0;
}
dot / mag
}
/// Standard cosine similarity (alias for compatibility)
#[allow(dead_code)]
#[inline]
fn cosine_similarity(a: &[f32], b: &[f32]) -> f32 {
cosine_similarity_simd(a, b)
}
#[cfg(test)]
mod tests {
use super::*;
use crate::types::Metadata;
#[test]
fn test_long_term_store() {
let store = LongTermStore::default();
let temporal_pattern =
TemporalPattern::from_embedding(vec![1.0, 2.0, 3.0], Metadata::new());
let id = temporal_pattern.pattern.id;
store.integrate(temporal_pattern);
assert_eq!(store.len(), 1);
assert!(store.get(&id).is_some());
}
#[test]
fn test_search() {
let store = LongTermStore::default();
// Add patterns
let p1 = TemporalPattern::from_embedding(vec![1.0, 0.0, 0.0], Metadata::new());
let p2 = TemporalPattern::from_embedding(vec![0.0, 1.0, 0.0], Metadata::new());
store.integrate(p1);
store.integrate(p2);
// Query similar to p1
let query = Query::from_embedding(vec![0.9, 0.1, 0.0]).with_k(1);
let results = store.search(&query);
assert_eq!(results.len(), 1);
assert!(results[0].score > 0.5);
}
#[test]
fn test_decay() {
let store = LongTermStore::default();
let mut temporal_pattern =
TemporalPattern::from_embedding(vec![1.0, 2.0, 3.0], Metadata::new());
temporal_pattern.pattern.salience = 0.15; // Just above minimum
let id = temporal_pattern.pattern.id;
store.integrate(temporal_pattern);
assert_eq!(store.len(), 1);
// Decay should remove it
store.decay_low_salience(0.5);
assert_eq!(store.len(), 0);
}
}

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//! Quantum Decay Memory Eviction — ADR-029 temporal memory extension.
//!
//! Replaces hard TTL expiry with T1/T2-inspired decoherence-based eviction.
//! Patterns decohere with time constants proportional to their retrieval
//! frequency and IIT Φ value — high-Φ, often-retrieved patterns have longer
//! coherence times (Φ-stabilized memory).
//!
//! Key insight: T2 < T1 always (dephasing faster than relaxation), matching
//! the empirical observation that memory detail fades before memory existence.
use std::time::{Duration, Instant};
/// Per-pattern decoherence state
#[derive(Debug, Clone)]
pub struct PatternDecoherence {
/// Pattern id
pub id: u64,
/// T1 relaxation time (energy/existence decay)
pub t1: Duration,
/// T2 dephasing time (detail/coherence decay)
pub t2: Duration,
/// Initial creation time
pub created_at: Instant,
/// Last retrieval time (refreshes coherence)
pub last_retrieved: Instant,
/// Φ value at creation — high Φ → longer coherence
pub phi: f64,
/// Retrieval count (higher count → refreshed T1)
pub retrieval_count: u32,
}
impl PatternDecoherence {
pub fn new(id: u64, phi: f64) -> Self {
let now = Instant::now();
// Base times: T1 = 60s, T2 = 30s (T2 < T1 always)
// Φ-scaling: high Φ extends both times
let phi_factor = (1.0 + phi * 0.5).min(10.0); // max 10x extension
let t1 = Duration::from_millis((60_000.0 * phi_factor) as u64);
let t2 = Duration::from_millis((30_000.0 * phi_factor) as u64);
Self {
id,
t1,
t2,
created_at: now,
last_retrieved: now,
phi,
retrieval_count: 0,
}
}
/// Refresh coherence on retrieval (use-dependent plasticity analog)
pub fn refresh(&mut self) {
self.last_retrieved = Instant::now();
self.retrieval_count += 1;
// Hebbian refreshing: each retrieval extends T2 by 10%
self.t2 = Duration::from_millis(
(self.t2.as_millis() as f64 * 1.1).min(self.t1.as_millis() as f64) as u64,
);
}
/// Current T2 coherence amplitude (1.0 = fully coherent, 0.0 = decoherent)
pub fn coherence_amplitude(&self) -> f64 {
let elapsed = self.last_retrieved.elapsed().as_millis() as f64;
let t2_ms = self.t2.as_millis() as f64;
(-elapsed / t2_ms).exp().max(0.0)
}
/// Current T1 existence probability (1.0 = exists, 0.0 = relaxed/forgotten)
pub fn existence_probability(&self) -> f64 {
let elapsed = self.created_at.elapsed().as_millis() as f64;
let t1_ms = self.t1.as_millis() as f64;
(-elapsed / t1_ms).exp().max(0.0)
}
/// Combined decoherence score for eviction decisions.
/// Low score → candidate for eviction.
pub fn decoherence_score(&self) -> f64 {
self.coherence_amplitude() * self.existence_probability()
}
/// Should this pattern be evicted?
pub fn should_evict(&self, threshold: f64) -> bool {
self.decoherence_score() < threshold
}
}
/// Quantum decay memory manager: tracks decoherence for a pool of patterns
pub struct QuantumDecayPool {
pub patterns: Vec<PatternDecoherence>,
/// Eviction threshold (patterns below this decoherence score are evicted)
pub eviction_threshold: f64,
/// Maximum pool size (hard cap)
pub max_size: usize,
}
impl QuantumDecayPool {
pub fn new(max_size: usize) -> Self {
Self {
patterns: Vec::with_capacity(max_size),
eviction_threshold: 0.1,
max_size,
}
}
/// Register a pattern with its Φ value.
pub fn register(&mut self, id: u64, phi: f64) {
if self.patterns.len() >= self.max_size {
self.evict_weakest();
}
self.patterns.push(PatternDecoherence::new(id, phi));
}
/// Record retrieval — refreshes coherence.
pub fn on_retrieve(&mut self, id: u64) {
if let Some(p) = self.patterns.iter_mut().find(|p| p.id == id) {
p.refresh();
}
}
/// Get decoherence-weighted score for search results.
pub fn weighted_score(&self, id: u64, base_score: f64) -> f64 {
self.patterns
.iter()
.find(|p| p.id == id)
.map(|p| base_score * (0.3 + 0.7 * p.decoherence_score()))
.unwrap_or(base_score * 0.5) // Unknown patterns get 50% weight
}
/// Evict decoherent patterns, return count evicted.
pub fn evict_decoherent(&mut self) -> usize {
let threshold = self.eviction_threshold;
let before = self.patterns.len();
self.patterns.retain(|p| !p.should_evict(threshold));
before - self.patterns.len()
}
/// Evict the weakest pattern (lowest decoherence score).
fn evict_weakest(&mut self) {
if let Some(idx) = self
.patterns
.iter()
.enumerate()
.min_by(|a, b| {
a.1.decoherence_score()
.partial_cmp(&b.1.decoherence_score())
.unwrap_or(std::cmp::Ordering::Equal)
})
.map(|(i, _)| i)
{
self.patterns.remove(idx);
}
}
pub fn len(&self) -> usize {
self.patterns.len()
}
pub fn is_empty(&self) -> bool {
self.patterns.is_empty()
}
/// Statistics for monitoring
pub fn stats(&self) -> DecayPoolStats {
if self.patterns.is_empty() {
return DecayPoolStats::default();
}
let scores: Vec<f64> = self
.patterns
.iter()
.map(|p| p.decoherence_score())
.collect();
let mean = scores.iter().sum::<f64>() / scores.len() as f64;
let min = scores.iter().cloned().fold(f64::INFINITY, f64::min);
let max = scores.iter().cloned().fold(f64::NEG_INFINITY, f64::max);
DecayPoolStats {
count: self.patterns.len(),
mean_score: mean,
min_score: min,
max_score: max,
}
}
}
#[derive(Debug, Default)]
pub struct DecayPoolStats {
pub count: usize,
pub mean_score: f64,
pub min_score: f64,
pub max_score: f64,
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_phi_extends_coherence_time() {
let low_phi = PatternDecoherence::new(0, 0.1);
let high_phi = PatternDecoherence::new(1, 5.0);
// High Φ pattern should have longer T1 and T2
assert!(high_phi.t1 > low_phi.t1, "High Φ should extend T1");
assert!(high_phi.t2 > low_phi.t2, "High Φ should extend T2");
}
#[test]
fn test_t2_less_than_t1() {
let pattern = PatternDecoherence::new(0, 1.0);
assert!(
pattern.t2 <= pattern.t1,
"T2 must never exceed T1 (physical constraint)"
);
}
#[test]
fn test_retrieval_refreshes_coherence() {
let mut pattern = PatternDecoherence::new(0, 1.0);
let initial_t2 = pattern.t2;
pattern.refresh();
assert!(pattern.t2 >= initial_t2, "Retrieval should not decrease T2");
assert_eq!(pattern.retrieval_count, 1);
}
#[test]
fn test_pool_evicts_decoherent() {
let mut pool = QuantumDecayPool::new(100);
// Add pattern with very short T2 (will decohere fast)
let mut fast_decoh = PatternDecoherence::new(99, 0.0001);
fast_decoh.t1 = Duration::from_micros(1);
fast_decoh.t2 = Duration::from_micros(1);
pool.patterns.push(fast_decoh);
// High-Φ pattern should survive
pool.register(1, 10.0);
std::thread::sleep(Duration::from_millis(5));
let evicted = pool.evict_decoherent();
assert!(evicted > 0, "Fast-decoherent pattern should be evicted");
assert!(
pool.patterns.iter().any(|p| p.id == 1),
"High-Φ pattern should survive"
);
}
#[test]
fn test_decoherence_weighted_score() {
let mut pool = QuantumDecayPool::new(10);
pool.register(5, 2.0);
let weighted = pool.weighted_score(5, 1.0);
// Should be between 0.3 and 1.0 (decoherence_score is in [0,1])
assert!(
weighted > 0.0 && weighted <= 1.0,
"Weighted score should be in (0,1]"
);
}
}

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//! Short-term volatile memory buffer
use crate::types::{PatternId, TemporalPattern};
use dashmap::DashMap;
use parking_lot::RwLock;
use std::collections::VecDeque;
use std::sync::Arc;
/// Configuration for short-term buffer
#[derive(Debug, Clone)]
pub struct ShortTermConfig {
/// Maximum number of patterns before consolidation
pub max_capacity: usize,
/// Consolidation threshold (trigger when this full)
pub consolidation_threshold: f32,
}
impl Default for ShortTermConfig {
fn default() -> Self {
Self {
max_capacity: 10_000,
consolidation_threshold: 0.8,
}
}
}
/// Short-term volatile memory buffer
pub struct ShortTermBuffer {
/// Pattern storage (FIFO queue)
patterns: Arc<RwLock<VecDeque<TemporalPattern>>>,
/// Index for fast lookup by ID
index: DashMap<PatternId, usize>,
/// Configuration
config: ShortTermConfig,
}
impl ShortTermBuffer {
/// Create new short-term buffer
pub fn new(config: ShortTermConfig) -> Self {
Self {
patterns: Arc::new(RwLock::new(VecDeque::with_capacity(config.max_capacity))),
index: DashMap::new(),
config,
}
}
/// Insert pattern into buffer
pub fn insert(&self, temporal_pattern: TemporalPattern) -> PatternId {
let id = temporal_pattern.pattern.id;
let mut patterns = self.patterns.write();
// Add to queue
let position = patterns.len();
patterns.push_back(temporal_pattern);
// Update index
self.index.insert(id, position);
id
}
/// Get pattern by ID
pub fn get(&self, id: &PatternId) -> Option<TemporalPattern> {
let index = self.index.get(id)?;
let patterns = self.patterns.read();
patterns.get(*index).cloned()
}
/// Get mutable pattern by ID
pub fn get_mut<F, R>(&self, id: &PatternId, f: F) -> Option<R>
where
F: FnOnce(&mut TemporalPattern) -> R,
{
let index = *self.index.get(id)?;
let mut patterns = self.patterns.write();
patterns.get_mut(index).map(f)
}
/// Update pattern
pub fn update(&self, temporal_pattern: TemporalPattern) -> bool {
let id = temporal_pattern.pattern.id;
if let Some(index) = self.index.get(&id) {
let mut patterns = self.patterns.write();
if let Some(p) = patterns.get_mut(*index) {
*p = temporal_pattern;
return true;
}
}
false
}
/// Check if should trigger consolidation
pub fn should_consolidate(&self) -> bool {
let patterns = self.patterns.read();
let usage = patterns.len() as f32 / self.config.max_capacity as f32;
usage >= self.config.consolidation_threshold
}
/// Get current size
pub fn len(&self) -> usize {
self.patterns.read().len()
}
/// Check if empty
pub fn is_empty(&self) -> bool {
self.patterns.read().is_empty()
}
/// Drain all patterns (for consolidation)
pub fn drain(&self) -> Vec<TemporalPattern> {
let mut patterns = self.patterns.write();
self.index.clear();
patterns.drain(..).collect()
}
/// Drain patterns matching predicate
pub fn drain_filter<F>(&self, mut predicate: F) -> Vec<TemporalPattern>
where
F: FnMut(&TemporalPattern) -> bool,
{
let mut patterns = self.patterns.write();
let mut result = Vec::new();
let mut i = 0;
while i < patterns.len() {
if predicate(&patterns[i]) {
let temporal_pattern = patterns.remove(i).unwrap();
self.index.remove(&temporal_pattern.pattern.id);
result.push(temporal_pattern);
// Don't increment i, as we removed an element
} else {
// Update index since positions shifted
self.index.insert(patterns[i].pattern.id, i);
i += 1;
}
}
result
}
/// Get all patterns (for iteration)
pub fn all(&self) -> Vec<TemporalPattern> {
self.patterns.read().iter().cloned().collect()
}
/// Clear all patterns
pub fn clear(&self) {
self.patterns.write().clear();
self.index.clear();
}
/// Get statistics
pub fn stats(&self) -> ShortTermStats {
let patterns = self.patterns.read();
let size = patterns.len();
let capacity = self.config.max_capacity;
let usage = size as f32 / capacity as f32;
// Compute average salience
let total_salience: f32 = patterns.iter().map(|p| p.pattern.salience).sum();
let avg_salience = if size > 0 {
total_salience / size as f32
} else {
0.0
};
ShortTermStats {
size,
capacity,
usage,
avg_salience,
}
}
}
impl Default for ShortTermBuffer {
fn default() -> Self {
Self::new(ShortTermConfig::default())
}
}
/// Short-term buffer statistics
#[derive(Debug, Clone)]
pub struct ShortTermStats {
/// Current number of patterns
pub size: usize,
/// Maximum capacity
pub capacity: usize,
/// Usage ratio (0.0 to 1.0)
pub usage: f32,
/// Average salience
pub avg_salience: f32,
}
#[cfg(test)]
mod tests {
use super::*;
use crate::types::Metadata;
#[test]
fn test_short_term_buffer() {
let buffer = ShortTermBuffer::default();
let temporal_pattern =
TemporalPattern::from_embedding(vec![1.0, 2.0, 3.0], Metadata::new());
let id = temporal_pattern.pattern.id;
buffer.insert(temporal_pattern);
assert_eq!(buffer.len(), 1);
assert!(buffer.get(&id).is_some());
let patterns = buffer.drain();
assert_eq!(patterns.len(), 1);
assert!(buffer.is_empty());
}
#[test]
fn test_consolidation_threshold() {
let config = ShortTermConfig {
max_capacity: 10,
consolidation_threshold: 0.8,
};
let buffer = ShortTermBuffer::new(config);
// Add 7 patterns (70% full)
for i in 0..7 {
let temporal_pattern = TemporalPattern::from_embedding(vec![i as f32], Metadata::new());
buffer.insert(temporal_pattern);
}
assert!(!buffer.should_consolidate());
// Add 1 more (80% full)
let temporal_pattern = TemporalPattern::from_embedding(vec![8.0], Metadata::new());
buffer.insert(temporal_pattern);
assert!(buffer.should_consolidate());
}
}

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//! Phase 3 Transfer Timeline
//!
//! Records domain transfer events in the EXO temporal causal graph so the
//! system can review its own transfer history and anticipate the next
//! beneficial `(src, dst)` pair to activate.
use ruvector_domain_expansion::DomainId;
use crate::{
AnticipationHint, ConsolidationConfig, ConsolidationResult, TemporalConfig, TemporalMemory,
};
use exo_core::{Metadata, Pattern, PatternId, SubstrateTime};
const DIM: usize = 64;
// ─── embedding helpers ────────────────────────────────────────────────────────
/// FNV-1a hash of a string, normalised to [0, 1].
fn domain_hash(id: &str) -> f32 {
let mut h: u32 = 0x811c_9dc5;
for b in id.bytes() {
h ^= b as u32;
h = h.wrapping_mul(0x0100_0193);
}
h as f32 / u32::MAX as f32
}
/// Build a 64-dim pattern embedding for a transfer event.
///
/// Layout:
/// * `[0]` src domain hash (normalised)
/// * `[1]` dst domain hash (normalised)
/// * `[2]` cycle (log-normalised to [0, 1] over 1 000 cycles)
/// * `[3]` delta_reward (clamped to [0, 1])
/// * `[4..64]` sinusoidal harmonics of `(src_hash + dst_hash)`
fn build_embedding(src: &DomainId, dst: &DomainId, cycle: u64, delta_reward: f32) -> Vec<f32> {
let mut emb = vec![0.0f32; DIM];
let sh = domain_hash(&src.0);
let dh = domain_hash(&dst.0);
emb[0] = sh;
emb[1] = dh;
emb[2] = (cycle as f32).ln_1p() / (1_000.0_f32).ln_1p();
emb[3] = delta_reward.clamp(0.0, 1.0);
for i in 4..DIM {
let phase = (sh + dh) * i as f32 * std::f32::consts::PI / DIM as f32;
emb[i] = phase.sin() * 0.5 + 0.5;
}
emb
}
// ─── TransferTimeline ─────────────────────────────────────────────────────────
/// Records transfer events in the temporal causal graph and provides
/// anticipation hints for the next beneficial transfer.
pub struct TransferTimeline {
memory: TemporalMemory,
last_transfer_id: Option<PatternId>,
/// Total transfer events recorded (short-term + consolidated).
count: usize,
}
impl TransferTimeline {
/// Create with a low salience threshold so even weak transfers are kept.
pub fn new() -> Self {
let config = TemporalConfig {
consolidation: ConsolidationConfig {
salience_threshold: 0.1,
..Default::default()
},
..Default::default()
};
Self {
memory: TemporalMemory::new(config),
last_transfer_id: None,
count: 0,
}
}
/// Record a transfer event.
///
/// `delta_reward` is the improvement in arm reward after transfer
/// (`> 0` = positive transfer, `< 0` = negative transfer).
///
/// Each event is linked causally to the previous one so the temporal
/// causal graph can trace the full transfer trajectory.
pub fn record_transfer(
&mut self,
src: &DomainId,
dst: &DomainId,
cycle: u64,
delta_reward: f32,
) -> crate::Result<PatternId> {
let embedding = build_embedding(src, dst, cycle, delta_reward);
let salience = delta_reward.abs().clamp(0.1, 1.0);
let antecedents: Vec<PatternId> = self.last_transfer_id.iter().copied().collect();
let pattern = Pattern {
id: PatternId::new(),
embedding,
metadata: Metadata::default(),
timestamp: SubstrateTime::now(),
antecedents: antecedents.clone(),
salience,
};
let id = self.memory.store(pattern, &antecedents)?;
self.last_transfer_id = Some(id);
self.count += 1;
Ok(id)
}
/// Consolidate short-term transfer events to long-term memory.
pub fn consolidate(&self) -> ConsolidationResult {
self.memory.consolidate()
}
/// Return anticipation hints based on recent transfer causality.
///
/// If a previous transfer was recorded the hints suggest continuing
/// the same causal chain and sequential pattern.
pub fn anticipate_next(&self) -> Vec<AnticipationHint> {
match self.last_transfer_id {
Some(id) => vec![
AnticipationHint::CausalChain { context: id },
AnticipationHint::SequentialPattern { recent: vec![id] },
],
None => vec![],
}
}
/// Total number of transfer events recorded.
pub fn count(&self) -> usize {
self.count
}
/// Causal graph reference for advanced queries.
pub fn causal_graph(&self) -> &crate::CausalGraph {
self.memory.causal_graph()
}
}
impl Default for TransferTimeline {
fn default() -> Self {
Self::new()
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_record_and_count() {
let mut tl = TransferTimeline::new();
let src = DomainId("retrieval".to_string());
let dst = DomainId("graph".to_string());
tl.record_transfer(&src, &dst, 1, 0.3).unwrap();
tl.record_transfer(&src, &dst, 2, 0.5).unwrap();
assert_eq!(tl.count(), 2);
}
#[test]
fn test_consolidate() {
let mut tl = TransferTimeline::new();
let src = DomainId("a".to_string());
let dst = DomainId("b".to_string());
for i in 0..5 {
tl.record_transfer(&src, &dst, i, 0.4).unwrap();
}
let result = tl.consolidate();
assert!(result.num_consolidated >= 1);
}
#[test]
fn test_anticipate_empty() {
let tl = TransferTimeline::new();
assert!(tl.anticipate_next().is_empty());
}
#[test]
fn test_anticipate_after_record() {
let mut tl = TransferTimeline::new();
let src = DomainId("x".to_string());
let dst = DomainId("y".to_string());
tl.record_transfer(&src, &dst, 1, 0.4).unwrap();
let hints = tl.anticipate_next();
assert!(!hints.is_empty());
}
#[test]
fn test_embedding_values() {
let src = DomainId("retrieval".to_string());
let dst = DomainId("graph".to_string());
let emb = build_embedding(&src, &dst, 42, 0.7);
assert_eq!(emb.len(), DIM);
assert!((emb[3] - 0.7).abs() < 1e-6);
}
}

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//! Core type definitions for temporal memory
use serde::{Deserialize, Serialize};
use std::hash::{Hash, Hasher};
// Re-export core types from exo-core
pub use exo_core::{Metadata, MetadataValue, Pattern, PatternId, SubstrateTime};
/// Extended pattern with temporal tracking
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct TemporalPattern {
/// Base pattern
pub pattern: Pattern,
/// Access count
pub access_count: usize,
/// Last access time
pub last_accessed: SubstrateTime,
}
impl TemporalPattern {
/// Create new temporal pattern
pub fn new(pattern: Pattern) -> Self {
Self {
pattern,
access_count: 0,
last_accessed: SubstrateTime::now(),
}
}
/// Create from components
pub fn from_embedding(embedding: Vec<f32>, metadata: Metadata) -> Self {
let pattern = Pattern {
id: PatternId::new(),
embedding,
metadata,
timestamp: SubstrateTime::now(),
antecedents: Vec::new(),
salience: 1.0,
};
Self::new(pattern)
}
/// Create with antecedents
pub fn with_antecedents(
embedding: Vec<f32>,
metadata: Metadata,
antecedents: Vec<PatternId>,
) -> Self {
let pattern = Pattern {
id: PatternId::new(),
embedding,
metadata,
timestamp: SubstrateTime::now(),
antecedents,
salience: 1.0,
};
Self::new(pattern)
}
/// Update access tracking
pub fn mark_accessed(&mut self) {
self.access_count += 1;
self.last_accessed = SubstrateTime::now();
}
/// Get pattern ID
pub fn id(&self) -> PatternId {
self.pattern.id
}
}
/// Query for pattern retrieval
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct Query {
/// Query vector embedding
pub embedding: Vec<f32>,
/// Origin pattern (for causal queries)
pub origin: Option<PatternId>,
/// Number of results requested
pub k: usize,
}
impl Query {
/// Create from embedding
pub fn from_embedding(embedding: Vec<f32>) -> Self {
Self {
embedding,
origin: None,
k: 10,
}
}
/// Set origin for causal queries
pub fn with_origin(mut self, origin: PatternId) -> Self {
self.origin = Some(origin);
self
}
/// Set number of results
pub fn with_k(mut self, k: usize) -> Self {
self.k = k;
self
}
/// Compute hash for caching
pub fn hash(&self) -> u64 {
use ahash::AHasher;
let mut hasher = AHasher::default();
for &val in &self.embedding {
val.to_bits().hash(&mut hasher);
}
if let Some(origin) = &self.origin {
origin.hash(&mut hasher);
}
self.k.hash(&mut hasher);
hasher.finish()
}
}
/// Result from causal query
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct CausalResult {
/// Retrieved pattern
pub pattern: TemporalPattern,
/// Similarity score
pub similarity: f32,
/// Causal distance (edges in causal graph)
pub causal_distance: Option<usize>,
/// Temporal distance in nanoseconds
pub temporal_distance_ns: i64,
/// Combined relevance score
pub combined_score: f32,
}
/// Search result
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct SearchResult {
/// Pattern ID
pub id: PatternId,
/// Pattern
pub pattern: TemporalPattern,
/// Similarity score
pub score: f32,
}
/// Time range for queries
#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
pub struct TimeRange {
/// Start time (inclusive)
pub start: SubstrateTime,
/// End time (inclusive)
pub end: SubstrateTime,
}
impl TimeRange {
/// Create new time range
pub fn new(start: SubstrateTime, end: SubstrateTime) -> Self {
Self { start, end }
}
/// Check if time is within range
pub fn contains(&self, time: &SubstrateTime) -> bool {
time >= &self.start && time <= &self.end
}
/// Past cone (everything before reference time)
pub fn past(reference: SubstrateTime) -> Self {
Self {
start: SubstrateTime::MIN,
end: reference,
}
}
/// Future cone (everything after reference time)
pub fn future(reference: SubstrateTime) -> Self {
Self {
start: reference,
end: SubstrateTime::MAX,
}
}
}

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//! Unit tests for exo-temporal memory coordinator
#[cfg(test)]
mod causal_cone_query_tests {
use super::*;
// use exo_temporal::*;
#[test]
fn test_causal_query_past_cone() {
// Test querying past causal cone
// let mut memory = TemporalMemory::new();
//
// let now = SubstrateTime::now();
// let past1 = memory.store(pattern_at(now - 1000), &[]).unwrap();
// let past2 = memory.store(pattern_at(now - 500), &[past1]).unwrap();
// let future1 = memory.store(pattern_at(now + 500), &[]).unwrap();
//
// let results = memory.causal_query(
// &query,
// now,
// CausalConeType::Past
// );
//
// assert!(results.iter().all(|r| r.timestamp <= now));
// assert!(results.iter().any(|r| r.id == past1));
// assert!(results.iter().any(|r| r.id == past2));
// assert!(!results.iter().any(|r| r.id == future1));
}
#[test]
fn test_causal_query_future_cone() {
// Test querying future causal cone
// let results = memory.causal_query(
// &query,
// reference_time,
// CausalConeType::Future
// );
//
// assert!(results.iter().all(|r| r.timestamp >= reference_time));
}
#[test]
fn test_causal_query_light_cone() {
// Test light-cone constraint (relativistic causality)
// let velocity = 1.0; // Speed of light
// let results = memory.causal_query(
// &query,
// reference_time,
// CausalConeType::LightCone { velocity }
// );
//
// // Verify |delta_x| <= c * |delta_t|
// for result in results {
// let dt = (result.timestamp - reference_time).abs();
// let dx = distance(result.position, query.position);
// assert!(dx <= velocity * dt);
// }
}
#[test]
fn test_causal_distance_calculation() {
// Test causal distance in causal graph
// let p1 = memory.store(pattern1, &[]).unwrap();
// let p2 = memory.store(pattern2, &[p1]).unwrap();
// let p3 = memory.store(pattern3, &[p2]).unwrap();
//
// let distance = memory.causal_graph.distance(p1, p3);
// assert_eq!(distance, 2); // Two hops
}
}
#[cfg(test)]
mod memory_consolidation_tests {
use super::*;
#[test]
fn test_short_term_to_long_term() {
// Test memory consolidation
// let mut memory = TemporalMemory::new();
//
// // Fill short-term buffer
// for i in 0..100 {
// memory.store(pattern(i), &[]).unwrap();
// }
//
// assert!(memory.short_term.should_consolidate());
//
// // Trigger consolidation
// memory.consolidate();
//
// // Verify short-term is cleared
// assert!(memory.short_term.is_empty());
//
// // Verify salient patterns moved to long-term
// assert!(memory.long_term.size() > 0);
}
#[test]
fn test_salience_filtering() {
// Test that only salient patterns are consolidated
// let mut memory = TemporalMemory::new();
//
// let high_salience = pattern_with_salience(0.9);
// let low_salience = pattern_with_salience(0.1);
//
// memory.store(high_salience.clone(), &[]).unwrap();
// memory.store(low_salience.clone(), &[]).unwrap();
//
// memory.consolidate();
//
// // High salience should be in long-term
// assert!(memory.long_term.contains(&high_salience));
//
// // Low salience should not be
// assert!(!memory.long_term.contains(&low_salience));
}
#[test]
fn test_salience_computation() {
// Test salience scoring
// let memory = setup_test_memory();
//
// let pattern = sample_pattern();
// let salience = memory.compute_salience(&pattern);
//
// // Salience should be between 0 and 1
// assert!(salience >= 0.0 && salience <= 1.0);
}
#[test]
fn test_salience_access_frequency() {
// Test access frequency component of salience
// let mut memory = setup_test_memory();
// let p_id = memory.store(pattern, &[]).unwrap();
//
// // Access multiple times
// for _ in 0..10 {
// memory.retrieve(p_id);
// }
//
// let salience = memory.compute_salience_for(p_id);
// assert!(salience > baseline_salience);
}
#[test]
fn test_salience_recency() {
// Test recency component
}
#[test]
fn test_salience_causal_importance() {
// Test causal importance component
// Patterns with many dependents should have higher salience
}
#[test]
fn test_salience_surprise() {
// Test surprise component
}
}
#[cfg(test)]
mod anticipation_tests {
use super::*;
#[test]
fn test_anticipate_sequential_pattern() {
// Test predictive pre-fetch from sequential patterns
// let mut memory = setup_test_memory();
//
// // Establish pattern: A -> B -> C
// memory.store_sequence([pattern_a, pattern_b, pattern_c]);
//
// // Query A, then B
// memory.query(&pattern_a);
// memory.query(&pattern_b);
//
// // Anticipate should predict C
// let hints = vec![AnticipationHint::SequentialPattern];
// memory.anticipate(&hints);
//
// // Verify C is pre-fetched in cache
// assert!(memory.prefetch_cache.contains_key(&hash(pattern_c)));
}
#[test]
fn test_anticipate_temporal_cycle() {
// Test time-of-day pattern anticipation
}
#[test]
fn test_anticipate_causal_chain() {
// Test causal dependency prediction
// If A causes B and C, querying A should pre-fetch B and C
}
#[test]
fn test_anticipate_cache_hit() {
// Test that anticipated queries hit cache
// let mut memory = setup_test_memory_with_anticipation();
//
// // Trigger anticipation
// memory.anticipate(&hints);
//
// // Query anticipated item
// let start = now();
// let result = memory.query(&anticipated_query);
// let duration = now() - start;
//
// // Should be faster due to cache hit
// assert!(duration < baseline_duration / 2);
}
}
#[cfg(test)]
mod causal_graph_tests {
use super::*;
#[test]
fn test_causal_graph_add_edge() {
// Test adding causal edge
// let mut graph = CausalGraph::new();
// let p1 = PatternId::new();
// let p2 = PatternId::new();
//
// graph.add_edge(p1, p2);
//
// assert!(graph.has_edge(p1, p2));
}
#[test]
fn test_causal_graph_forward_edges() {
// Test forward edge index (cause -> effects)
// graph.add_edge(p1, p2);
// graph.add_edge(p1, p3);
//
// let effects = graph.forward.get(&p1);
// assert_eq!(effects.len(), 2);
}
#[test]
fn test_causal_graph_backward_edges() {
// Test backward edge index (effect -> causes)
// graph.add_edge(p1, p3);
// graph.add_edge(p2, p3);
//
// let causes = graph.backward.get(&p3);
// assert_eq!(causes.len(), 2);
}
#[test]
fn test_causal_graph_shortest_path() {
// Test shortest path calculation
}
#[test]
fn test_causal_graph_out_degree() {
// Test out-degree for causal importance
}
}
#[cfg(test)]
mod temporal_knowledge_graph_tests {
use super::*;
#[test]
fn test_tkg_add_temporal_fact() {
// Test adding temporal fact to TKG
// let mut tkg = TemporalKnowledgeGraph::new();
// let fact = TemporalFact {
// subject: entity1,
// predicate: relation,
// object: entity2,
// timestamp: SubstrateTime::now(),
// };
//
// tkg.add_fact(fact);
//
// assert!(tkg.has_fact(&fact));
}
#[test]
fn test_tkg_temporal_query() {
// Test querying facts within time range
}
#[test]
fn test_tkg_temporal_relations() {
// Test temporal relation inference
}
}
#[cfg(test)]
mod short_term_buffer_tests {
use super::*;
#[test]
fn test_short_term_insert() {
// Test inserting into short-term buffer
// let mut buffer = ShortTermBuffer::new(capacity: 100);
// let id = buffer.insert(pattern);
// assert!(buffer.contains(id));
}
#[test]
fn test_short_term_capacity() {
// Test buffer capacity limits
// let mut buffer = ShortTermBuffer::new(capacity: 10);
//
// for i in 0..20 {
// buffer.insert(pattern(i));
// }
//
// assert_eq!(buffer.len(), 10); // Should maintain capacity
}
#[test]
fn test_short_term_eviction() {
// Test eviction policy (FIFO or LRU)
}
#[test]
fn test_short_term_should_consolidate() {
// Test consolidation trigger
// let mut buffer = ShortTermBuffer::new(capacity: 100);
//
// for i in 0..80 {
// buffer.insert(pattern(i));
// }
//
// assert!(buffer.should_consolidate()); // > 75% full
}
}
#[cfg(test)]
mod long_term_store_tests {
use super::*;
#[test]
fn test_long_term_integrate() {
// Test integrating pattern into long-term storage
}
#[test]
fn test_long_term_search() {
// Test search in long-term storage
}
#[test]
fn test_long_term_decay() {
// Test strategic decay of low-salience
// let mut store = LongTermStore::new();
//
// store.integrate(high_salience_pattern(), 0.9);
// store.integrate(low_salience_pattern(), 0.1);
//
// store.decay_low_salience(0.2); // Threshold
//
// // High salience should remain
// // Low salience should be decayed
}
}
#[cfg(test)]
mod edge_cases_tests {
use super::*;
#[test]
fn test_empty_antecedents() {
// Test storing pattern with no causal antecedents
// let mut memory = TemporalMemory::new();
// let id = memory.store(pattern, &[]).unwrap();
// assert!(memory.causal_graph.backward.get(&id).is_none());
}
#[test]
fn test_circular_causality() {
// Test detecting/handling circular causal dependencies
// Should this be allowed or prevented?
}
#[test]
fn test_time_travel_query() {
// Test querying with reference_time in the future
}
#[test]
fn test_concurrent_consolidation() {
// Test concurrent access during consolidation
}
}