arXiv Machine Learning
Sep 3

CAPTURE: Disentangling Preference Drift from Memory Poisoning in Personalized LLM Agents

The paper introduces CAPTURE, a system designed to help personalized language agents distinguish genuine preference changes from temporary context shifts or malicious memory poisoning. CAPTURE employs a neural differential-equation belief tracker, a multi-timescale memory ledger, uncertainty-triggered clarification, and counterfactual auditing to resolve ambiguity. Experiments on 480 episodes from 96 users show CAPTURE outperforms baseline methods, limiting poisoning success while accepting most real preference updates.

By S M Asif Hossain, Ruksat Khan Shayoni, Md Kishor Morol