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From Ted Dunning <ted.dunn...@gmail.com>
Subject Re: combination of features worsen the performance
Date Mon, 11 Jul 2011 21:15:18 GMT
Can you say a little bit about the data?

What are features A and B?  What kind of data do they represent?

How many other features are there?

What is the target variable?  How many possible values does it have?

How much training data do you have?

What sort of training are you doing?



On Mon, Jul 11, 2011 at 2:08 PM, Weihua Zhu <wzhu@adconion.com> wrote:

> Hi, Dear all,
>
>  I am using mahout logistic regression for classification; interestingly,
> for feature A, B, individually each has satisfactory performances, say 65%,
> 80%, but when i combine them together(using encoder), the performance is
> like 72%. Shouldn't the performance be better? Any thoughts? Thanks a lot,
>
>
> -wz.
>

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