feat(core): add DeterministicScore with deterministic fusion#501
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ohdearquant wants to merge 2 commits into
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feat(core): add DeterministicScore with deterministic fusion#501ohdearquant wants to merge 2 commits into
ohdearquant wants to merge 2 commits into
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Port fixed-point i64 scoring (2^32 scale) from khive-score into ruvector-core. Fixes NaN panics in FlatIndex, changes RRF default K from 60 to 15 (per Lean4 consensus bias proof), and adds search_deterministic() to VectorIndex trait. Co-Authored-By: claude-flow <ruv@ruv.net>
revert fusion rrf to 60
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Summary
DeterministicScore(i64 fixed-point, 2^32 scale) toruvector-core— ported from khive-scoreFlatIndexsorting (partial_cmp().unwrap()→ total ordering)search_deterministic()toVectorIndextrait — boundary conversion from f32 distance to deterministic similaritydeterministic_rrfanddeterministic_weightedfusion usingBTreeMapfor iteration-order determinismLean4 formal proofs
Corresponding formal proofs (51 theorems, zero
sorry) verified with Lean 4.25.2 + Mathlib v4.25.2:Properties proved: total order, NaN safety, saturating arithmetic (branch specs + commutativity), RuntimeValid invariant preservation, abstract float conversion validity, MIN-unreachability, scalar mul/div validity, division-by-zero policy.
Test plan
deterministic_scoretests passruvector-coresuite: 238 passed, 0 failed🤖 Generated with claude-flow