[SOLR-16827] Add min/max scaling to the reranker

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Resolved
• Fix Version/s: 9.3
• Component/s: reranker
• Labels: hybrid-search
• Assignee: Joel Bernstein
• Reporter: Joel Bernstein
• Created: 27/May/23 03:31
• Updated: 21/Jul/23 20:42
• Resolved: 27/Jun/23 01:47

Description

When combining an unbounded Lucene / Solr score with a vector score its difficult or impossible to balance the two components by simply adjusting the weight of the rerank score.

This ticket will add Min/Max scaling of both the main query scores and ReRank scores to the ReRanker to support the hybrid ranking function.

Issue Links

• links to: GitHub Pull Request #1692
• links to: GitHub Pull Request #1723