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From Sean Owen <>
Subject Re: Does Mahout handle missing values in train and test data, for Decision Forest?
Date Tue, 22 Apr 2014 12:32:32 GMT
>From looking at the code recently, no it is not handled.

On Tue, Apr 22, 2014 at 1:27 PM, Himanshu <> wrote:
> In Weka it is possible to mark the field with a question mark "?" for unknown
> values and these are handled. Is there a similar way to mark
> "unknown"/"missing" field values in Mahout training and test data as well.
> Appreciate any suggestions/pointers. Breiman talks about two ways to handle
> missing values.

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