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#16660 PR: Skip blocks without decompressing them when reading selected stored fields.
44.3 minutes ago  1 comments  0 votes  0 watches  github-actions[bot], vsop-479
This change implements skip entire sub blocks without decompressing them, when these blocks only ... Inspired by https://github.com/apache/lucene/pull/1003. Relates to https://github.com/apache/lucene/issues/11652.
    vsop-479 1.5 hours ago:  No regression on wikimediumall: ` TaskQPS baseline StdDevQPS my_modified_version ...

#16567 PR: Add ivfaster: a segment-lifecycle-aware IVF vector codec for the sandbox
4.9 hours ago  3 comments  0 votes  0 watches  RKSPD, github-actions[bot], gsmiller, msokolov
IVFaster: a segment-lifecycle-aware IVF vector codec (sandbox) It's no secret that vector search ... Segments are immutable and merge constantly, and both properties are cheap for an inverted index ... There have been attempts to improve this behavior, namely IncrementalHnswGraphMerger, which adopts ...
    gsmiller 14.2 days ago:  Disclaimer: Rikhil and I work together and started a conversation about this earlier today, but I ... A property that really excites me about IVF is that docIDs can be traversed in monotonically ... I find this compelling since it means docs could potentially be evaluated doc-at-a-time along with ...
    RKSPD 15.4 days ago:  > exciting! the numbers you shared look compelling. Can you address the failing checks?

#16657 PR: Fix LRUQueryCache hashCode/equals contract and account query RAM once per distinct query
7.1 hours ago  10 comments  0 votes  0 watches  github-actions[bot], msfroh, sgup432
Description LRUQueryCache was recently refactored (releasing in Lucene 11.0) to partition the ... I found a bug in QueryCacheKey: it compares queries by value in equals() but hashes them with ... For example, we cache new TermQuery("color","red") and then look it up with another equal new ...
    sgup432 7.2 hours ago:  Benchmarks: Comparing the 16 partition vs 1 partition ` ┌──────────────────────────────────── ...
    sgup432 7.3 hours ago:  @msfroh I have changed the logic. As mentioned above, instead of routing based on (query, segment), I am routing by query only. This simplifies a lot of things.

#16665 PR: Fix the COSINE merge scorer in Lucene104ScalarQuantizedVectorsReader
8.9 hours ago  0 comments  0 votes  0 watches  github-actions[bot], john-mlika
For an asymmetric scalar-quantized encoding, an HNSW merge asks Lucene104ScalarQuantizedVectorsRead ... It quantizes them raw, while the writer normalized the index side of the same segment for COSINE. With vectors that are not unit length, the merge fails on the quantizer's unit-vector assertion ...

#16030 PR: Implement data-blind scalar quantization
9 hours ago  40 comments  0 votes  0 watches  github-actions[bot], kaivalnp, mccullocht, mikemccand, romseygeek
Add an option to the quantization format to enable or disable centering (enabled by default). When centering is disabled we also stop writing the float vectors which can lead to significant ... Special handling is included during merges -- we check that all of the input is in the same ...
    kaivalnp 9 hours ago:  Nice!
    kaivalnp 1.3 days ago:  Looks awesome! Left some small comments..

#16654 PR: Backwards-compatibility changes for [Byte|Float]VectorSimilarityQuery
9.1 hours ago  11 comments  0 votes  0 watches  github-actions[bot], hossman, kaivalnp, msokolov
Description - Lucene 10.5.0 (15784) switched [Byte|Float]VectorSimilarityQuery from explicit to ... . - This caused upgrade churn for some users (https://issues.apache.org/jira/browse/SOLR-18416), ...
    kaivalnp 9.1 hours ago:  Thanks, I will merge this by EOD unless there are further comments! Also proposing to remove the (deprecated) Explicit classes in Lucene 10.6, I'll raise a follow-up ...
    msokolov 12.7 hours ago:  thanks, looks good to me!

#15840: Add/Improve the test coverage for NativeVectorUtilSupport
10.6 hours ago  2 comments  0 votes  0 watches  ColinLeeo, ExE-Boss, shubhamvishu
Description Currently, NativeVectorUtilSupport is only exercised in tests when the user ... Even then, not all code paths and VectorUtil operations are covered but only the ones overridden ... The native path is not tested automatically in our CI workflow which disconnects it from other ...
    shubhamvishu 10.6 hours ago:  > Does this split match the intended scope of the issue? For the first PR, would you prefer to focus on the Java-side behavior, the real native ABI path, or ... @ColinLeeo Thanks for showing interest.
    ColinLeeo 22.7 hours ago:  Hi, I’d like to help with this issue. After looking through NativeVectorUtilSupport, I think there are two layers of behavior we may want ... The first is the Java-side logic: native versus fallback dispatch, argument handling, and result ...

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