Long-horizon Conversational Memory Answer-Quality on LongMemEval MAB
64.7AccuracySEGTREEMEM-BU
Evaluation results
| Method | Links | ||
|---|---|---|---|
| SEGTREEMEM-BUMemory Structure Type=Segment Tree, Propagation Direction=Bottom-up, Alpha (α)=0.10, Horizon (H)=2, LLM Construction Setting=batch2026.06 | 64.7 | 19.7 | |
| SEGTREEMEM-TDMemory Structure Type=Segment Tree, Propagation Direction=Top-down, Alpha (α)=0.10, Horizon (H)=2, LLM Construction Setting=batch2026.06 | 63.3 | 20.4 | |
| HippoRAGMemory Structure Type=Graph-structured2026.06 | 56 | 17.2 | |
| A-MEMMemory Structure Type=Graph-structured2026.06 | 55.3 | 16.6 | |
| Mem0Memory Structure Type=Graph-structured2026.06 | 53.7 | 17.4 | |
| RAPTORMemory Structure Type=Tree-structured2026.06 | 52.3 | 16.6 | |
| DenseMemory Structure Type=Retrieval-only2026.06 | 52 | 16.8 | |
| BM25Memory Structure Type=Retrieval-only2026.06 | 49.7 | 16.9 | |
| MemTreeMemory Structure Type=Tree-structured2026.06 | 48.3 | 15.7 |