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docs: note HNSW is the default vector-search backend in README

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Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>
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osobh
2026-06-03 10:04:06 +00:00
co-authored by Claude Opus 4.8
parent 5f5626e47f
commit 48a0bd23aa
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@@ -82,7 +82,7 @@ BM25-only baseline (no embedding model required at bench time):
| MRR (session) | ~0.34 | Higher | | MRR (session) | ~0.34 | Higher |
| Abstention accuracy | ~72% | — | | Abstention accuracy | ~72% | — |
> ¹ Enable embeddings via `hybrid_search(query_emb, text, 0.7, 0.3, k)` for substantially higher recall. > ¹ Enable embeddings via `hybrid_search(query_emb, text, 0.7, 0.3, k)` for substantially higher recall. The vector stage is served by the HNSW index by default (the `hnsw` feature is on by default); build with `--no-default-features --features float16` to fall back to an exact linear cosine scan.
### Memory Footprint ### Memory Footprint
@@ -159,7 +159,7 @@ ClawhDF5's agent memory engine implements research from 15+ recent papers on age
|--------|-------------| |--------|-------------|
| **`knowledge`** | Entity/relation graph with BFS traversal, spreading activation, fuzzy entity resolution | | **`knowledge`** | Entity/relation graph with BFS traversal, spreading activation, fuzzy entity resolution |
| **`consolidation`** | Three-tier memory (Working → Episodic → Semantic) with importance scoring and time-decay | | **`consolidation`** | Three-tier memory (Working → Episodic → Semantic) with importance scoring and time-decay |
| **`hybrid`** | Vector + BM25 fusion with Reciprocal Rank Fusion (RRF, k=60) | | **`hybrid`** | Vector + BM25 fusion with Reciprocal Rank Fusion (RRF, k=60). The vector stage uses the HNSW index by default (`hnsw` feature, on by default); disable with `--no-default-features --features float16` for an exact linear scan |
| **`reranker`** | Multi-factor re-ranking: temporal recency, source authority, activation weight | | **`reranker`** | Multi-factor re-ranking: temporal recency, source authority, activation weight |
| **`confidence`** | Low-confidence rejection — suppresses spurious recalls when nothing matches | | **`confidence`** | Low-confidence rejection — suppresses spurious recalls when nothing matches |
| **`temporal`** | Sorted timestamp index, session DAG, entity timeline, temporal query hints | | **`temporal`** | Sorted timestamp index, session DAG, entity timeline, temporal query hints |