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https://issues.apache.org/jira/browse/SOLR-11863?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16573695#comment-16573695
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Joel Bernstein commented on SOLR-11863:
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Added test cases. I'll do some manual testing at larger scale an then likely
commit.
> Add knnRegress Stream Evaluator to support nearest neighbor regression
> ----------------------------------------------------------------------
>
> Key: SOLR-11863
> URL: https://issues.apache.org/jira/browse/SOLR-11863
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Joel Bernstein
> Assignee: Joel Bernstein
> Priority: Major
> Fix For: master (8.0), 7.5
>
> Attachments: SOLR-11863.patch, SOLR-11863.patch, SOLR-11863.patch
>
>
> This ticket adds the knnRegress Stream Evaluator to add support for nearest
> neighbor regression to the Streaming Expressions machine learning library.
> Sample syntax:
> {code:java}
> let(sample=random(collection1, q=":", rows=10000, fl="response_d, filesize_d,
> service_d"),
> filesizes=col(sample, filesize_d),
> responses=col(sample, response_d),
> serviceLevels=col(sample, service_d),
> observations=transpose(matrix(filesizes, responses)),
> model=knnRegress(observations, serviceLevels, 10),
> prediction=predict(model, array(36365, 645))){code}
>
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