Aleksandr Popitich created LUCENE-10156: -------------------------------------------
Summary: BlendedInfixSuggester incorrectly scores items with high and low weights Key: LUCENE-10156 URL: https://issues.apache.org/jira/browse/LUCENE-10156 Project: Lucene - Core Issue Type: Bug Components: core/search Affects Versions: 8.10 Reporter: Aleksandr Popitich After LUCENE-8343 fix BlendedInfixSuggester applies additional 1 / LINEAR_COEF coefficient for weight that fall to (-10, 10) range. Where LINEAR_COEF = 0.1 Link to the changes: [Code|https://github.com/apache/lucene/commit/e0232f104509f28126d9ce060663f87508366338] Whilst it fixes zero score issues, it causes incorrect scoring between item with weight < 10 and item with weight > 10. *Example:* Blender - POSITION_RECIPROCAL (weight / (1 + position)) ||Item||Weight||Score|| |AAA|8|8 * (1 / 0.1) * (1 / (1 + 0)) = 80| |AAB|11|11 * (1 / (1 + 0)) = 11| So item AAA with the same position, but with lower weight bubbled up, but in fact if should be on bottom. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@lucene.apache.org For additional commands, e-mail: issues-h...@lucene.apache.org