[SOLR-595] support field level boosting to morelikethis handler.

• Type: New Feature
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.3
• Fix Version/s: 1.3
• Component/s: search
• Assignee: Grant Ingersoll
• Reporter: Tom Morton
• Created: 11/Jun/08 17:28
• Updated: 10/May/13 10:39
• Resolved: 17/Jun/08 12:50

Description

Allow boosting to be specified for particular fields when using more like this.

1. Parse out "mlt.qf parameters" to get boosts in dismax like format (existing code from DisMax param parse code used to produce a Map<String,Float>)
2. Iterate through mltquery terms, get boost by looking at field from which mltquery term came, and multiply boost specified in map by existing term boost.

• If mlt.boost=false, then you get the same boost values as in map/mlt.qf parameters,

• If mlt.boost=true then you get normalized boost multiplied by specified boost (which makes sense to me).