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From Yanbo Liang <yblia...@gmail.com>
Subject Re: Retrieve best parameters from CrossValidator
Date Sun, 29 Nov 2015 14:44:25 GMT
Hi Ben,

We can get the best model from CrossValidatorModel.BestModel, further more
we can use the write function of CrossValidatorModel
<https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala#L340>
to implement model persistent and use the best model at other place (after
1.6 release). So I think to expose the best model parameters as public API
is not very necessary.

2015-11-29 7:36 GMT+08:00 BenFradet <benjamin.fradet@gmail.com>:

> Hi everyone,
>
> Is there a better way to retrieve the best model parameters obtained from
> cross validation than inspecting the logs issued while calling the fit
> method (with the call here:
>
> https://github.com/apache/spark/blob/branch-1.5/mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala#L106
> )?
>
> Wouldn't it be useful to expose this to the end user through the
> crossValidatorModel?
>
> Thanks for your response.
>
> Best,
> Ben.
>
>
>
>
>
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