MedGraph Beats Five Memory Systems

🔥 What happened Donghua Zhang's team unveiled MedGraph, a graph memory for medical LLM assistants that tracks patient state across visits. It tops MedMemoryBench by 10.5 points over five baselines with a GPT backbone, and 10.4 with Qwen. 💡 Why it matters Existing memory systems fail three ways: stale state, another person's facts, and missing safety data. MedGraph chains dated facts per patient and reads each chain at the question's timestamp — a real state tracker, not vector search. ⚡ Our take Longitudinal care needs graphs, not embeddings. A 10-point gap isn't tuning — it's an architecture shift.