arXiv AI By Isaac Kofi Nti

Diagnosing Capability Preservation and Task Sensitivity in Memory Augmented Document Classifiers

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The paper introduces Protected QL Memory, a dual‑path document classifier that separates a causal local pathway from an associative matrix writer and a finalized memory reader. It evaluates three empirical properties—capability preservation, diagnostic access, and task performance sensitivity—across nine dataset‑seed conditions, finding that writer capability is fully preserved while diagnostic accuracy gaps are large but macro‑F1 scores change minimally. The study concludes that preserving associative capability and diagnostic access does not guarantee downstream reliance on memory, urging separate evaluation of these objectives.

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arXiv AI
Oct 9

What to Admit and How to Present: Governing Persistent Memory in LLM Agents

The paper introduces two inference‑time designs—factor‑compiled admission (FC) and permission‑semantic admission (PS)—to govern persistent memory in large language model agents without retraining. FC evaluates entire memory entries, while PS decomposes entries into typed units, both using deterministic policies to decide what recalled information enters the working context and how it is expressed. Experiments on a development suite and an external benchmark show that FC and PS reduce failure rates and cross‑domain leakage compared to verbatim injection, though they increase personalization failures and do not meet all preregistered criteria.

By Chang Liu, Deliang Ding
arXiv AI
Oct 2

Causal Memory Policy: Making Memory Utility Identifiable by Intervening on Retrieval

The paper introduces Causal Memory Policy (CMP), a framework that identifies the utility of memories in memory‑augmented language models by intervening on retrieval rather than on storage. CMP reserves fixed context slots for memories sampled with known propensities and estimates utility using self‑normalized inverse propensity weighting, providing unbiased estimates and exact variance. Experiments show that CMP improves discrimination between required and non‑required memories and reveals that identified utility alone is insufficient for retention decisions across unseen queries.

By Arman Behnam, Binghui Wang
arXiv AI
Oct 7

The Right Memory in the Wrong Context: Verifying Retrieval Admissibility in Long-Term Agent Memory

The paper presents a retrieval‑admissibility verification framework for long‑term memory agents, classifying each memory‑query pair as admissible, inadmissible, or unresolved. It evaluates the framework on public benchmarks (RHELM and MemOps), showing improved anchor recall and reduced exact similarity errors, while also revealing that existing verifiers miss certain inadmissible exposures. The study highlights the need for separate checks on candidate support, admissibility, prompt exposure, and answer disclosure to ensure safe memory retrieval.

By Zi Wang, Xingqiao Wang, Emmanuel Addai, Devika Ambekar, Xiaowei Xu