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Posted to dev@lucene.apache.org by "Christine Poerschke (JIRA)" <ji...@apache.org> on 2017/10/13 12:55:00 UTC
[jira] [Commented] (LUCENE-7991)
KNearestNeighborDocumentClassifier.knnSearch applies previous boosted
field's factor to subsequent unboosted fields
[ https://issues.apache.org/jira/browse/LUCENE-7991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16203522#comment-16203522 ]
Christine Poerschke commented on LUCENE-7991:
---------------------------------------------
[~teofili] - would you have any thoughts on this small patch? Thanks!
> KNearestNeighborDocumentClassifier.knnSearch applies previous boosted field's factor to subsequent unboosted fields
> -------------------------------------------------------------------------------------------------------------------
>
> Key: LUCENE-7991
> URL: https://issues.apache.org/jira/browse/LUCENE-7991
> Project: Lucene - Core
> Issue Type: Bug
> Components: modules/classification
> Reporter: Christine Poerschke
> Priority: Minor
> Attachments: LUCENE-7991.patch
>
>
> When reading code noticed that in [KNearestNeighborClassifier|https://github.com/apache/lucene-solr/blob/releases/lucene-solr/7.0.1/lucene/classification/src/java/org/apache/lucene/classification/KNearestNeighborClassifier.java#L179-L182] a neutral boost factor is restored but in [KNearestNeighborDocumentClassifier|https://github.com/apache/lucene-solr/blob/releases/lucene-solr/7.0.1/lucene/classification/src/java/org/apache/lucene/classification/document/KNearestNeighborDocumentClassifier.java#L126] this currently does not happen. This seems unintended.
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