[jira] [Commented] (SOLR-11838) explore supporting Deeplearning4j NeuralNetwork models

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[jira] [Commented] (SOLR-11838) explore supporting Deeplearning4j NeuralNetwork models

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    [ https://issues.apache.org/jira/browse/SOLR-11838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16324700#comment-16324700 ]

Christine Poerschke commented on SOLR-11838:

bq. ... using a streaming expression to pull data from <somewhere> ...

I have not had an opportunity before to try out streaming expressions ... so had a go and hacked up a proof-of-concept this evening (SOLR-11852) - the connection to Deeplearning4j here could be for the pre-trained DL4J model definitions to be stored <somewhere> and for contrib/ltr to be able to access them from there via a streaming expression.

The pre-trained models would of course still have to be hydrated and for contrib/ltr purposes the [LTRScoringModel.java|https://github.com/apache/lucene-solr/blob/master/solr/contrib/ltr/src/java/org/apache/solr/ltr/model/LTRScoringModel.java] base class to be implemented.

> explore supporting Deeplearning4j NeuralNetwork models
> ------------------------------------------------------
>                 Key: SOLR-11838
>                 URL: https://issues.apache.org/jira/browse/SOLR-11838
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Christine Poerschke
>         Attachments: SOLR-11838.patch
> [~yuyano] wrote in SOLR-11597:
> bq. ... If we think to apply this to more complex neural networks in the future, we will need to support layers ...
> [~malcorn_redhat] wrote in SOLR-11597:
> bq. ... In my opinion, if this is a route Solr eventually wants to go, I think a better strategy would be to just add a dependency on [Deeplearning4j|https://deeplearning4j.org/] ...
> Creating this ticket for the idea to be explored further (if anyone is interested in exploring it), complimentary to and independent of the SOLR-11597 RankNet related effort.

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