benwtrent commented on code in PR #15667:
URL: https://github.com/apache/lucene/pull/15667#discussion_r2771262986
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lucene/core/src/java/org/apache/lucene/util/hnsw/NeighborArray.java:
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@@ -310,21 +310,47 @@ private boolean isWorstNonDiverse(
float minAcceptedSimilarity = scores.get(candidateIndex);
if (candidateIndex == uncheckedIndexes[uncheckedCursor]) {
// the candidate itself is unchecked
- for (int i = candidateIndex - 1; i >= 0; i--) {
- float neighborSimilarity = scorer.score(nodes.get(i));
+ int numNodesToCheck = candidateIndex;
+ if (numNodesToCheck == 0) {
+ return false;
+ }
+
+ // Allocate a temporary buffer for scores.
+ // NeighborArray size is typically small (M=16 or 32), so this
allocation is acceptable
+ // and keeps the change localized to this class.
+ float[] neighborScores = new float[numNodesToCheck];
+
+ // Bulk score all neighbors.
+ // The default implementation in RandomVectorScorer handles the fallback
if needed.
+ scorer.bulkScore(nodes.buffer, neighborScores, numNodesToCheck);
Review Comment:
please, delete all the useless LLM-esque comments. We can see what its
doing. Comments describing "what" are fairly useless.
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