[SOLR-3747] Solr Score threshold 'reasonably', independent of results returned

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Component/s: Schema and Analysis
• Labels: documentation
• Assignee: Unassigned
• Reporter: Ramzi Alqrainy
• Created: 21/Aug/12 02:26
• Updated: 22/Aug/12 09:59
• Resolved: 21/Aug/12 11:59

Description

Usually, search results are sorted by their score (how well the document matched the query), but it is common to need to support the sorting of supplied data too.

Boosting affects the scores of matching documents in order to affect ranking in score-sorted search results. Providing a boost value, whether at the document or field level, is optional.

When the results are returned with scores, we want to be able to only "keep" results that are above some score (i.e. results of a certain quality only). Is it possible to do this when the returned subset could be anything?

I ask because it seems like on some queries a score of say 0.008 is resulting in a decent match, whereas other queries a higher score results in a poor match.

I have written pseudo code to achieve what I said.
Note: I have attached my code as screenshot

double scoreLimit = 0.75 #For example
searchResults = new Results[numberOfResults];
boolean lastScore=false;
solrSearchResults = Calling Solr Engine.
for( Result result : solrSearchResults)

{ if (lastScore != false && result.score/lastScore<scoreLimit) break; lastScore = result.score; Adding new result to searchResults array }