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https://issues.apache.org/jira/browse/SPARK-10413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15741169#comment-15741169
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Yanbo Liang commented on SPARK-10413:
-------------------------------------

[~anshbansal] Yeah, we will put this feature at a high priority in Spark 2.2 
release cycle. I think there is no JIRA ticket for predict method on the whole 
pipeline model, it depends on this feature. Thanks.

> 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.
> UPDATE: This issue is for making predictions with single models.  We can make 
> methods like {{def predict(features: Vector): Double}} public.
> * This issue is *not* for single-instance prediction for full Pipelines, 
> which would require making predictions on {{Row}}s.



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