IMDMR: An Intelligent Multi-Dimensional Memory Retrieval System for Enhanced Conversational AI

TL;DR

IMDMR tackles the persistent challenge of maintaining coherent and personalized memory in long-running conversations by introducing Intelligent Multi-Dimensional Memory Retrieval, a framework that combines six memory dimensions—semantic, entity, category, intent, context, and temporal—with intelligent query processing and cross-memory entity integration. The methodology employs a modular architecture with a four-layer stack and real cloud integrations (AWS Bedrock, Amazon Titan embeddings, Qdrant), enabling production-grade performance that significantly surpasses baselines in both simulated and production settings. Empirical results show a 3.8x improvement in overall performance in production over the best baseline and a substantial ablation-led advantage for the full multi-dimensional system, with strong statistical significance (p < 0.001) and large effect sizes. The work demonstrates the practical impact of real technology integration for memory-rich conversational AI and suggests a roadmap for broader adoption of multi-dimensional memory management and adaptive retrieval strategies in real-world deployments.

Abstract

Conversational AI systems often struggle with maintaining coherent, contextual memory across extended interactions, limiting their ability to provide personalized and contextually relevant responses. This paper presents IMDMR (Intelligent Multi-Dimensional Memory Retrieval), a novel system that addresses these limitations through a multi-dimensional search architecture. Unlike existing memory systems that rely on single-dimensional approaches, IMDMR leverages six distinct memory dimensions-semantic, entity, category, intent, context, and temporal-to provide comprehensive memory retrieval capabilities. Our system incorporates intelligent query processing with dynamic strategy selection, cross-memory entity resolution, and advanced memory integration techniques. Through comprehensive evaluation against five baseline systems including LangChain RAG, LlamaIndex, MemGPT, and spaCy + RAG, IMDMR achieves a 3.8x improvement in overall performance (0.792 vs 0.207 for the best baseline). We present both simulated (0.314) and production (0.792) implementations, demonstrating the importance of real technology integration while maintaining superiority over all baseline systems. Ablation studies demonstrate the effectiveness of multi-dimensional search, with the full system outperforming individual dimension approaches by 23.3%. Query-type analysis reveals superior performance across all categories, particularly for preferences/interests (0.630) and goals/aspirations (0.630) queries. Comprehensive visualizations and statistical analysis confirm the significance of these improvements with p < 0.001 across all metrics. The results establish IMDMR as a significant advancement in conversational AI memory systems, providing a robust foundation for enhanced user interactions and personalized experiences.

Figures (8)

• Figure 1: IMDMR System Architecture Overview
• Figure 2: IMDMR System: Comprehensive Performance Dashboard
• Figure 3: Comprehensive Baseline System Performance Comparison
• Figure 4: Ablation Study: Dimension Effectiveness Analysis
• Figure 5: Query-Type Performance Analysis