[jira] [Commented] (JENA-242) LARQ scores not normalized

["Paolo Castagna (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/JENA-242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13267371#comment-13267371 ] 

Paolo Castagna commented on JENA-242:
-------------------------------------

Thanks Tao.

All searches call the IndexLARQ.search(...) [1]
There is a getMaxScore method in Lucene's TopDocs [2] which we can use to normalize scores for the same query.

 [1] http://svn.apache.org/repos/asf/incubator/jena/Jena2/LARQ/trunk/src/main/java/org/apache/jena/larq/IndexLARQ.java
 [2] http://lucene.apache.org/core/old_versioned_docs/versions/3_5_0/api/core/org/apache/lucene/search/TopDocs.html#getMaxScore%28%29
                
> LARQ scores not normalized
> --------------------------
>
>                 Key: JENA-242
>                 URL: https://issues.apache.org/jira/browse/JENA-242
>             Project: Apache Jena
>          Issue Type: Bug
>          Components: LARQ
>    Affects Versions: LARQ 1.0.0
>         Environment: Fuseki
>            Reporter: laotao
>
> In previous versions the LARQ score seemed to be normalized to range [0, 1]. In LARQ 1.0.0 some scores can be higher than 1. 
> Normalized scores are needed to filter sparql results (so that only items above certain quality is shown).

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