When One Bad Memory Hides Another
TL;DR for operators A persistent-memory agent can retrieve two harmful records that substitute for one another. Remove either record alone, and the remaining one can preserve the same wrong answer, making both look harmless under a one-at-a-time deletion test. MeClear1 addresses that failure mode by measuring each retrieved memory across multiple combinations of the surrounding context rather than only against the full retrieved set. It uses sampled Shapley contributions to identify negatively contributing memories, ranks them, and then tests nested clearance candidates. A nonempty clearance is accepted only when it produces positive empirical task gain and passes a fixed recovery check. ...