Join post-HNSW block rescore for diversifying child KNN (POC)#16047
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iprithv wants to merge 2 commits into
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Join post-HNSW block rescore for diversifying child KNN (POC)#16047iprithv wants to merge 2 commits into
iprithv wants to merge 2 commits into
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Optional blockRescore on DiversifyingChildren float/byte KNN; shared blockRescore() with visited accounting; tests; JMH benchmark; CHANGES (Improvements, GITHUB#15839). Relates to apache#15839
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Description
This implements a proof of concept for sibling scoring in block join diversified child vector search, discussed in #15839 — Maybe Improve join block Vector search performance by block scoring child vectors.
Benchmarks (JMH)
DiversifyingChildrenFloatKnnJoinBenchmark: 3 forks, 5 warmup / 10 measurement (30 samples/cell),-Xmx2g, dim 96, topK 64, 4096 parent blocks.rescoreBlocks=falserescoreBlocks=trueOverhead grows with block width (and with
topK).