[SOLR-12581] add a "min_popularity" option to relatedness() aggregation that forces scores to -Inf if fg/bg pops don't meet a threshold

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.5, 8.0
• Component/s: Facet Module
• Assignee: Chris M. Hostetter
• Reporter: Chris M. Hostetter
• Created: 23/Jul/18 16:26
• Updated: 08/Jun/19 14:58
• Resolved: 25/Jul/18 21:16

Description

as discussed in SOLR-9480 and noted in TODO comments, the original SKG code base had a "min_pop" option that would completely ignore "terms" if the fg/bg popularities weren't above a user specified threshold. with the implementation of SKG as a relatedness() aggregation function, we need to leave any actual filtering of buckets by an aggregation result to a future generalized JSON facet enhancement, but what we can do today is implement an optional min_popularity option on relatedness() that forces the relatedness score to -Infinity so buckets that don't meat the threshold at least score "as low as possible"

Issue Links

• is blocked by: SOLR-12567 Enhance JSON Facet aggregation syntax to support a JSON Object based "type:func" form that supports local params