[r/ML] [D] We audited LoCoMo: 6.4% of the answer key is wrong and the judge accepts up to 63% of intentionally wrong answers

Summary

An audit of LoCoMo, a widely cited long-term memory benchmark for LLMs, revealed significant flaws. The audit found that 6.4% of its answer key is incorrect, and its LLM judge accepts up to 63% of intentionally wrong answers. This raises concerns about the validity of research using LoCoMo, while a proposed alternative, LongMemEval-S, is also criticized for not adequately testing long-term memory.

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