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From "Sambhav Kothari (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (SOLR-13143) Output from ExplainAugmenterFactory and DebugQuery for rerank queries is not same
Date Thu, 17 Jan 2019 13:54:00 GMT

    [ https://issues.apache.org/jira/browse/SOLR-13143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16745004#comment-16745004
] 

Sambhav Kothari edited comment on SOLR-13143 at 1/17/19 1:53 PM:
-----------------------------------------------------------------

Attaching the failing test as a patch. You can run it vie

```

ant test -Dtestcase=TestReRankQParserPlugin

```


was (Author: samj1912):
Attaching the failing test as a patch.

> Output from ExplainAugmenterFactory and DebugQuery for rerank queries is not same
> ---------------------------------------------------------------------------------
>
>                 Key: SOLR-13143
>                 URL: https://issues.apache.org/jira/browse/SOLR-13143
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: search
>    Affects Versions: 7.5
>            Reporter: Sambhav Kothari
>            Priority: Minor
>         Attachments: bug.patch
>
>
> Currently, if we use the ExplainAugmenterFactory with LtR, instead of using the 
>  model/re-rankers explain method, it uses the default query explain (tf-idf 
>  explanation). This happens because the BasicResultContext doesn't wrap the 
>  query([https://github.com/apache/lucene-solr/blob/1d85cd783863f75cea133fb9c452302]
>  214165a4d/solr/core/src/java/org/apache/solr/response/BasicResultContext.java#L6
>  7) with the RankQuery when its set to context's query, which is then used by 
>  the ExplainAugmenterFactory. 
>  ([https://github.com/apache/lucene-solr/blob/1d85cd783863f75cea133fb9c45230221416]
>  5a4d/solr/core/src/java/org/apache/solr/response/transform/ExplainAugmenterFacto
>  ry.java#L111).
> As a result there are discrepancies between queries like -
> [http://localhost:8983/solr/collection1/select?q=*:*&collection=collectionName&wt]
>  =json&fl=[explain style=nl],score&rq=\{!ltr model=linear-model}
> [http://localhost:8983/solr/collection1/select?q=*:*&collection=collectionName&wt]
>  =json&fl=score&rq=\{!ltr model=linear-model}&debugQuery=true
> the former outputs the explain from the SimilarityScorer's explain while the 
>  latter uses the correct LtR ModelScorer's explain.
> There are a few other problems with the explain augmenter - for eg. it doesn't 
>  work with grouping (although the other doc transformers like LtR's 
>  LTRFeatureLoggerTransformerFactory work with grouping)
> Mailing List - 
>  
> http://mail-archives.apache.org/mod_mbox/lucene-solr-user/201901.mbox/%3C5C3879D702C30144003902B0_0_18802%40msllnjpmsgsv06%3E



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