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21246813aa
Adds crates/ruvector-maxsim: ColBERT-style multi-vector late interaction search in pure Rust. Implements the MultiVecIndex trait with three variants: - FlatMaxSim: exhaustive oracle (recall 1.000, 179 QPS at N=5K, D=64) - BucketMaxSim: centroid pre-filter (recall 0.797 at os=500, 873 QPS) - HnswMaxSim: flat NSW token graph (recall 0.437, 774 QPS) Key result: BucketFast(os=50) delivers 10.4× speedup over FlatMaxSim. Multi-token advantage confirmed: doc covering two topics scores 1.0 vs −0.017 for single-topic doc on a topic-B query. 19 unit + integration tests pass. 6 acceptance tests pass. Hardware: x86_64 Linux 6.18.5, rustc 1.87.0 --release. Also adds: - docs/adr/ADR-252-multi-vector-maxsim.md - docs/research/nightly/2026-06-15-multi-vector-maxsim/README.md - docs/research/nightly/2026-06-15-multi-vector-maxsim/gist.md https://claude.ai/code/session_012DGVDmZDWketKGDGigwggt Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: ruvnet <ruvnet@gmail.com> |
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