Yuki Yano created SOLR-11250:
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Summary: 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
Priority: Minor
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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