mayya-sharipova commented on a change in pull request #641:
URL: https://github.com/apache/lucene/pull/641#discussion_r799027275
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File path:
lucene/core/src/java/org/apache/lucene/util/hnsw/HnswGraphBuilder.java
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@@ -93,6 +96,11 @@ public HnswGraphBuilder(
this.random = new SplittableRandom(seed);
int levelOfFirstNode = getRandomGraphLevel(ml, random);
this.hnsw = new HnswGraph(maxConn, levelOfFirstNode);
+ this.graphSearcher =
+ new HnswGraphSearcher(
+ similarityFunction,
+ new NeighborQueue(beamWidth, similarityFunction.reversed == false),
+ new FixedBitSet(vectorValues.size()));
Review comment:
@jtibshirani I am wondering what is the reasoning of using `FixedBitSet`
during graph construction? Are we expecting to visit most of the graph nodes
( I guess that's true on a smaller graphs)?
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