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https://issues.apache.org/jira/browse/SPARK-10413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14904276#comment-14904276
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Yanbo Liang commented on SPARK-10413:
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[~mengxr]
I think to support prediction on single instance for PredictionModel and its
subclass is not complex, we just make predict() public and add test cases.
In the case of other Model subclass we should add predict function for single
instance prediction. And then the transform function will use predict functions
as UDF.
And one issues that we should discuss is that after we make predict as public,
shall we need to make other functions such as predictRaw, predictProbability,
etc. public for single instance?
> Model should support prediction on single instance
> --------------------------------------------------
>
> Key: SPARK-10413
> URL: https://issues.apache.org/jira/browse/SPARK-10413
> Project: Spark
> Issue Type: Umbrella
> Components: ML
> Reporter: Xiangrui Meng
> Priority: Critical
>
> Currently models in the pipeline API only implement transform(DataFrame). It
> would be quite useful to support prediction on single instance.
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