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https://issues.apache.org/jira/browse/SOLR-3747?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13438778#comment-13438778
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Ramzi Alqrainy commented on SOLR-3747:
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Thank you for a wonderfully detailed answer. I think this task will help us to
avoid poor match. for example.
Query: solr lucene apple
Doc1 : solr solr apple score: 10
Doc2 : lucene apple score : 7
Doc3 : test solr test score : 2
Actually, I don't need Doc3 in my result, I want to ignore it. If we implement
this task, we can give solr threshold 30%. then solr will ignore result Doc3
according to below calculation.
Doc1 100% (10/10 *100%)
Doc2 70% (7/10 *100%)
Doc3 20% (2/10 *100%)
If my point is invalid, How we can solve this problem? Once again very
thoughtful and helpful. Thank you.
> Solr Score threshold 'reasonably', independent of results returned
> ------------------------------------------------------------------
>
> Key: SOLR-3747
> URL: https://issues.apache.org/jira/browse/SOLR-3747
> Project: Solr
> Issue Type: Task
> Components: Schema and Analysis
> Reporter: Ramzi Alqrainy
> Labels: documentation
> Attachments: Screen Shot 2012-08-21 at 5.30.38 AM.png
>
> Original Estimate: 5h
> Remaining Estimate: 5h
>
> 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
>
> }
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