Is a schema-aware memory graph 'overfitting'? Dev asks for the cleanest leakage test
chaachans · reddit · 2026-09-06
A developer benchmarking a memory system on long multi-session conversations (LoCoMo) extracted entities — people, facts, claims, events, timestamps, relations — into a graph, exploiting the known data schema:
- He never looked at the QA pairs while building extractors or retrieval rules, and wrote no hardcoded "if question contains X, fetch fact #173" logic.
- Recall is very high and keeps working on new conversations in the same format.
- His question: is this classical overfitting or just schema-aware engineering — and what's the cleanest test to prove there's no leakage? Useful methodological discussion for anyone building agent memory systems and evals.
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