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From "Christine Poerschke (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (SOLR-11250) Add new LTR model which loads the model definition from the external resource
Date Fri, 01 Dec 2017 15:47:00 GMT

     [ https://issues.apache.org/jira/browse/SOLR-11250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Christine Poerschke resolved SOLR-11250.
----------------------------------------
       Resolution: Fixed
    Fix Version/s: master (8.0)
                   7.2

Thanks [~yuyano] and [~shalinmangar]!

> Add new LTR model which loads the model definition from the external resource
> -----------------------------------------------------------------------------
>
>                 Key: SOLR-11250
>                 URL: https://issues.apache.org/jira/browse/SOLR-11250
>             Project: Solr
>          Issue Type: Improvement
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: contrib - LTR
>            Reporter: Yuki Yano
>            Assignee: Christine Poerschke
>            Priority: Minor
>             Fix For: 7.2, master (8.0)
>
>         Attachments: SOLR-11250.patch, SOLR-11250.patch, SOLR-11250.patch, SOLR-11250.patch,
SOLR-11250_master.patch, SOLR-11250_master_v2.patch, SOLR-11250_master_v3.patch, SOLR-11250_master_v4.patch
>
>
> *example of committed change's usage:*
> {code}
> {
>   "class" : "org.apache.solr.ltr.model.DefaultWrapperModel",
>   "name" : "myWrapperModelName",
>   "params" : {
>     "resource" : "models/myModel.json"
>   }
> }
> {code}
> ----
> *original summary:*
> We add new model which contains only the location of the external model and loads it
during the initialization.
> By this procedure, large models which are difficult to upload to ZooKeeper can be available.
> The new model works as the wrapper of existing models, and deligates APIs to them.
> We add two classes by this patch:
> * {{ExternalModel}} : a base class for models with external resources.
> * {{URIExternalModel}} : an implementation of {{ExternalModel}} which loads the external
model from specified URI (ex. file:, http:, etc.).
> For example, if you have a model on the local disk "file:///var/models/myModel.json",
the definition of {{URIExternalModel}} will be like the following.
> {code}
> {
>   "class" : "org.apache.solr.ltr.model.URIExternalModel",
>   "name" : "myURIExternalModel",
>   "features" : [],
>   "params" : {
>     "uri" : "file:///var/models/myModel.json"
>   }
> }
> {code}
> If you use LTR with {{model=myURIExternalModel}}, the model of {{myModel.json}} will
be used for scoring documents.



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