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https://issues.apache.org/jira/browse/SOLR-3931?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14938785#comment-14938785
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Ivan Provalov commented on SOLR-3931:
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Ideally, I would like to plug in a similarity class at search time, given the
norm encoding is compatible across the index time and search time. Right now,
this requires a lot of custom extensions.
> Turn off coord() factor for scoring
> -----------------------------------
>
> Key: SOLR-3931
> URL: https://issues.apache.org/jira/browse/SOLR-3931
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.0
> Reporter: Bill Bell
>
> We would like to remove coordination factor from scoring.
> FOr small fields (like name of doctor), we want to not score higher if the
> same term is in the field more than once. Makes sense for books, not so much
> for formal names.
> /solr/select?q=*:*&coordFactor=false
> Default is true.
> (Note: we might want to make each of these optional - tf, idf, coord,
> queryNorm
> coord(q,d) is a score factor based on how many of the query terms are found
> in the specified document. Typically, a document that contains more of the
> query's terms will receive a higher score than another document with fewer
> query terms. This is a search time factor computed in coord(q,d) by the
> Similarity in effect at search time.
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