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#16065 PR: FaissKnnVectorsFormat COSINE similarity support

1 minute ago 0 comments 0 votes 0 watches github-actions[bot], iprithv

added support for VectorSimilarityFunction.COSINE in the Faiss-based vector format. read this to implement, which was useful! https://github.com/facebookresearch/faiss/wiki/FAQ#how-can-i-index-vectors-for-cosine-distance

#16064: FaissKnnVectorsFormat COSINE similarity support

6.6 minutes ago 0 comments 0 votes 0 watches iprithv

right now, FaissKnnVectorsFormat only supports DOT_PRODUCT and EUCLIDEAN. If we try to use COSINE, it fails at runtime with an UnsupportedOperationException. since cosine ...

#16061 PR: Improve cost estimation in SortedSetDocValuesRangeQuery when using DocValuesSkipper

1 hour ago 12 comments 0 votes 0 watches github-actions[bot], iverase, romseygeek

I noticed that the current implementation always return values.cost() because we are delaying the ... This is because we need to do some lookups for resolving the ordinals of the query. Still when there is a skipper and the index is dense and used as primary sort, we have a very fast ...

iverase 1.2 hours ago:	I think we want to use the skipper directly here, I noticed we are being a bit inefficient here. For example: ` skipper.advance(minOrd, Long.MAX_VALUE); ... This should be true very often because of the way we are building the blocks.
romseygeek 2.1 hours ago:	I like this a lot! I wonder if its possible to use SkipBlockRangeIterator to simplify the code that finds bounds a bit?

#16063 PR: Remove redundant final modifiers

1.6 hours ago 0 comments 0 votes 0 watches github-actions[bot], vsop-479

Description This change removes redundant final modifiers throughout all final classes -- except ...

#16053 PR: Add an (optional) field-writer creation strategy to Lucene99FlatVectorsWriter

4 hours ago 2 comments 0 votes 0 watches github-actions[bot], ldematte

Lucene99FlatVectorsWriter hard-codes the per-field storage for vector values to an on-heap ... Different users of Lucene99FlatVectorsFormat may want to change how vectors are stored in memory; ... In particular, this PR adds a public constructor overload to Lucene99FlatVectorsWriter that accepts ...

ldematte 23.9 hours ago:

We could store FlatFieldVectorsWriters and FieldInfos separately in 2 arrays, but I think using a ...

#15993 PR: Add maxValueCount to DocValuesSkipper metadata

7.8 hours ago 3 comments 0 votes 0 watches github-actions[bot], iprithv, jainankitk, romseygeek

# Description resolves https://github.com/apache/lucene/issues/15794 - Add DocValuesSkippermaxV ... . - Persist exact global maxValueCount metadata in Lucene90 doc values skipper metadata for new ...

iprithv 4.7 days ago:	@romseygeek would you be able to take a look at this? Thanks!
iprithv 12.7 days ago:	> I am wondering if this information needs to stored as part of DocValuesSkipper as this should be ... Also, this PR - 15737 might be related. Thanks for taking a look.

#15978 PR: Fix HNSW InfoStream duplicate times and add per-chunk completion logging

7.9 hours ago 30 comments 0 votes 0 watches github-actions[bot], iprithv, mikemccand

# Description: Fixes 15967 The printGraphBuildStatus method in HnswGraphBuilder.addVectors() ... However, during concurrent HNSW merging, each worker processes chunks of 2048 vectors, and the ... This means the print fires **at most once per chunk**, always on the first matching node where t == ...

iprithv 7.9 hours ago:	@mikemccand just wanted to touch base with you on this, in case it got buried. Thanks!
iprithv 13.6 days ago:	sure, done. Thanks!

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