Adrien Grand created LUCENE-8072:
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Summary: Improve accuracy of similarity scores
Key: LUCENE-8072
URL: https://issues.apache.org/jira/browse/LUCENE-8072
Project: Lucene - Core
Issue Type: Task
Reporter: Adrien Grand
Priority: Minor
I noticed two things we could do to improve the accuracy of our scores:
- use Math.log1p(x) instead of Math.log(1+x), especially when x is expected to
be small
- use doubles for intermediate values that are used to compute norms in
BM25Similarity
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