[LUCENE-7347] Remove queryNorm and coords

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.0
• Lucene Fields: New
• Assignee: Adrien Grand
• Reporter: Adrien Grand
• Created: 20/Jun/16 08:15
• Updated: 28/Aug/22 15:00
• Resolved: 12/Jul/16 12:45

Description

These two features are specific to TF-IDF and introduce some complexity (see eg. handling of coords in BooleanWeight) and bugs/corner-cases (see eg. how taking the query norm into account causes scoring challenges on LUCENE-7337).

Since we made BM25 the default in 6.0, I propose that we remove these TF-IDF-specific features in 7.0.

Sub-Tasks

• Remove queryNorm: Resolved
• Remove coordination factors from scores: Resolved