shawdm opened a new pull request, #4442: URL: https://github.com/apache/solr/pull/4442
https://issues.apache.org/jira/browse/SOLR-18245 # Description When using LTR, a client may need to know the sort score that a document would have required to have been eligible for rerank by LTR. # Solution This PR adds a `echoReRankCutoff` local parameter to the LTR rerank query (e.g. `{!ltr model=myModel reRankDocs=100 echoReRankCutoff=true}`. When this parameter is set to true, the `responseHeader` will include a `reRankCutoff` field which will return the score of the lowest ranked document that was included for rerank. When multiple sorts are used (e.g. `sort=price desc,discount asc`), the response header contains the cutoff value for each sort, in order. ## Example Response ``` "responseHeader": { "status": 0, "QTime": 1, "reRankCutoff": [ 11.99, 2.20 ] } ``` # Tests * Tests added to `TestLTRQParserPlugin` to test core functionality. * New test class `TestLTRReRankCutoffOnSolrCloud` added to test for sharded cases. This has also meant I've extracted out shared code from `TestLTROnSolrCloud` in to a common `AbstractLTRSolrCloudTestBase`. # Checklist Please review the following and check all that apply: - [X] I have reviewed the guidelines for [How to Contribute](https://github.com/apache/solr/blob/main/CONTRIBUTING.md) and my code conforms to the standards described there to the best of my ability. - [X] I have created a Jira issue and added the issue ID to my pull request title. - [ ] I have given Solr maintainers [access](https://help.github.com/en/articles/allowing-changes-to-a-pull-request-branch-created-from-a-fork) to contribute to my PR branch. (optional but recommended, not available for branches on forks living under an organisation) - [X] I have developed this patch against the `main` branch. - [ ] I have run `./gradlew check`. - [X] I have added tests for my changes. - [X] I have added documentation for the [Reference Guide](https://github.com/apache/solr/tree/main/solr/solr-ref-guide) - [ ] I have added a [changelog entry](https://github.com/apache/solr/blob/main/dev-docs/changelog.adoc) for my change -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
