ResearchResearch paperRetrieval, RAG & Search · Large Language Models · Speech & Audio1 source · Oct 19, 2026

The Geometry of Agent Memory: Forecasting Retrieval-Bound Memory Failures, and Characterizing Its Limits

We study whether geometric relationships between conversation turns, memory texts, and queries can predict answer correctness before generation.

Key points

  • We evaluate four memory implementations with dense or hybrid retrieval and one observation-summary comparator.
  • A logistic classifier uses 25 features describing query proximity, memory-conversation correspondence, and conversation structure.
  • A fixed-store context-selection experiment finds higher accuracy with proximity-ranked memories than with random subsets, consistent with ordinary retrieval relevance.
  • The results characterize associations between memory representations and correctness, rather than establish a reliable deployment diagnostic.

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