Michael A. Alcorn created SOLR-11386:
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Summary: 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
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:
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
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:
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
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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