Robert Muir created LUCENE-8024:
-----------------------------------
Summary: Remove unnecessary norms.advanceExact check in score()
Key: LUCENE-8024
URL: https://issues.apache.org/jira/browse/LUCENE-8024
Project: Lucene - Core
Issue Type: Bug
Reporter: Robert Muir
This should no longer be needed, since the index-time boost is removed, and
since sims are no longer asked to score non-existent terms.
E.g. core tests pass with:
{noformat}
---
a/lucene/core/src/java/org/apache/lucene/search/similarities/BM25Similarity.java
+++
b/lucene/core/src/java/org/apache/lucene/search/similarities/BM25Similarity.java
@@ -230,11 +230,8 @@ public class BM25Similarity extends Similarity {
if (norms == null) {
norm = k1;
} else {
- if (norms.advanceExact(doc)) {
- norm = cache[((byte) norms.longValue()) & 0xFF];
- } else {
- norm = cache[0];
- }
+ norms.advanceExact(doc);
+ norm = cache[((byte) norms.longValue()) & 0xFF];
}
return weightValue * (float) (freq / (freq + norm));
}
{noformat}
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