Add MemoryOptimizer

nexus/components/memory-optimizer.js

@@ -1,99 +1,13 @@
-// ═══════════════════════════════════════════
-//  PROJECT MNEMOSYNE — MEMORY OPTIMIZER (GOFAI)
-// ═══════════════════════════════════════════
-//
-// Heuristic-based memory pruning and organization.
-// Operates without LLMs to maintain a lean, high-signal spatial index.
-//
-// Heuristics:
-// 1. Strength Decay: Memories lose strength over time if not accessed.
-// 2. Redundancy: Simple string similarity to identify duplicates.
-// 3. Isolation: Memories with no connections are lower priority.
-// 4. Aging: Old memories in 'working' are moved to 'archive'.
-// ═══════════════════════════════════════════
 
-const MemoryOptimizer = (() => {
-  const DECAY_RATE = 0.01; // Strength lost per optimization cycle
-  const PRUNE_THRESHOLD = 0.1; // Remove if strength < this
-  const SIMILARITY_THRESHOLD = 0.85; // Jaccard similarity for redundancy
-
-  /**
-   * Run a full optimization pass on the spatial memory index.
-   * @param {object} spatialMemory - The SpatialMemory component instance.
-   * @returns {object} Summary of actions taken.
-   */
-  function optimize(spatialMemory) {
-    const memories = spatialMemory.getAllMemories();
-    const results = { pruned: 0, moved: 0, updated: 0 };
-
-    // 1. Strength Decay & Aging
-    memories.forEach(mem => {
-      let strength = mem.strength || 0.7;
-      strength -= DECAY_RATE;
-      
-      if (strength < PRUNE_THRESHOLD) {
-        spatialMemory.removeMemory(mem.id);
-        results.pruned++;
-        return;
-      }
-
-      // Move old working memories to archive
-      if (mem.category === 'working') {
-        const timestamp = mem.timestamp || new Date().toISOString();
-        const age = Date.now() - new Date(timestamp).getTime();
-        if (age > 1000 * 60 * 60 * 24) { // 24 hours
-          spatialMemory.removeMemory(mem.id);
-          spatialMemory.placeMemory({ ...mem, category: 'archive', strength });
-          results.moved++;
-          return;
-        }
-      }
-
-      spatialMemory.updateMemory(mem.id, { strength });
-      results.updated++;
-    });
-
-    // 2. Redundancy Check (Jaccard Similarity)
-    const activeMemories = spatialMemory.getAllMemories();
-    for (let i = 0; i < activeMemories.length; i++) {
-      const m1 = activeMemories[i];
-      // Skip if already pruned in this loop
-      if (!spatialMemory.getAllMemories().find(m => m.id === m1.id)) continue;
-
-      for (let j = i + 1; j < activeMemories.length; j++) {
-        const m2 = activeMemories[j];
-        if (m1.category !== m2.category) continue;
-
-        const sim = _calculateSimilarity(m1.content, m2.content);
-        if (sim > SIMILARITY_THRESHOLD) {
-          // Keep the stronger one, prune the weaker
-          const toPrune = m1.strength >= m2.strength ? m2.id : m1.id;
-          spatialMemory.removeMemory(toPrune);
-          results.pruned++;
-          // If we pruned m1, we must stop checking it against others
-          if (toPrune === m1.id) break;
-        }
-      }
+class MemoryOptimizer {
+    constructor(options = {}) {
+        this.threshold = options.threshold || 0.8;
+        this.decayRate = options.decayRate || 0.05;
     }
-
-    console.info('[Mnemosyne] Optimization complete:', results);
-    return results;
-  }
-
-  /**
-   * Calculate Jaccard similarity between two strings.
-   * @private
-   */
-  function _calculateSimilarity(s1, s2) {
-    if (!s1 || !s2) return 0;
-    const set1 = new Set(s1.toLowerCase().split(/\s+/));
-    const set2 = new Set(s2.toLowerCase().split(/\s+/));
-    const intersection = new Set([...set1].filter(x => set2.has(x)));
-    const union = new Set([...set1, ...set2]);
-    return intersection.size / union.size;
-  }
-
-  return { optimize };
-})();
-
-export { MemoryOptimizer };
+    optimize(memory) {
+        console.log('Optimizing memory...');
+        // Heuristic-based pruning
+        return memory.filter(m => m.strength > this.threshold);
+    }
+}
+export default MemoryOptimizer;