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https://issues.apache.org/jira/browse/SOLR-11386?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16206223#comment-16206223
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Michael A. Alcorn commented on SOLR-11386:
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I should also clarify that I do not want a phrase query, i.e., the order of the
tokens should not matter (I'm still learning Solr jargon).
> Extracting learning to rank features fails when word ordering of EFI argument
> changed.
> --------------------------------------------------------------------------------------
>
> Key: SOLR-11386
> URL: https://issues.apache.org/jira/browse/SOLR-11386
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: contrib - LTR
> Affects Versions: 6.5.1
> Reporter: Michael A. Alcorn
> Attachments: solr_efi_examples.zip
>
>
> I'm getting some extremely strange behavior when trying to extract features
> for a learning to rank model. The following query incorrectly says all
> features have zero values:
> {code}
> http://gss-test-fusion.usersys.redhat.com:8983/solr/access/query?q=added
> couple of fiber channel&rq={!ltr model=redhat_efi_model reRankDocs=1
> efi.case_summary=the efi.case_description=added couple of fiber channel
> efi.case_issue=the efi.case_environment=the}&fl=id,score,[features]&rows=10
> {code}
> But this query, which simply moves the word "added" from the front of the
> provided text to the back, properly fills in the feature values:
> {code}
> http://gss-test-fusion.usersys.redhat.com:8983/solr/access/query?q=couple of
> fiber channel added&rq={!ltr model=redhat_efi_model reRankDocs=1
> efi.case_summary=the efi.case_description=couple of fiber channel added
> efi.case_issue=the efi.case_environment=the}&fl=id,score,[features]&rows=10
> {code}
> The explain output for the failing query can be found here:
> https://gist.github.com/manisnesan/18a8f1804f29b1b62ebfae1211f38cc4
> and the explain output for the properly functioning query can be found here:
> https://gist.github.com/manisnesan/47685a561605e2229434b38aed11cc65
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