[R] Fwd: About classification methods.

[David Winsemius]

On Feb 11, 2011, at 4:11 PM, Jaeik Cho wrote:

> I mean, after done for the testing step, I want show which data  
> classified to wrong class.
> That predictions.

At this point my suggestion is that your (re?)-read the Posting Guide  
and determine whether you have adhered to the level of detail and  
specificity that is implied to be desirable or optimal for questions  
to r-help. There may be a language issue and without implying any  
moral issue, the provision of a worked example might be even more  
important here than it would be in a situation of a shared language.   
You might also consult the "How to ask good questions" link which IIRC  
is at the bottom of that document.

(My apologies to Bert if this was a question that he really was hoping  
to answer.)

-- 
David
>
> Jaeik
>
>
> Begin forwarded message:
>
>> From: Bert Gunter <gunter.berton at gene.com>
>> Date: February 11, 2011 3:00:47 PM CST
>> To: David Winsemius <dwinsemius at comcast.net>
>> Cc: Jaeik Cho <chojaeik at gmail.com>, r-help at r-project.org
>> Subject: Re: [R] About classification methods.
>>
>>>
>>>>
>>>> Which package should I using, and can I compare each classifier  
>>>> result by
>>>> predictions?
>>>>
>>
>> By prediction on the training data, emphastically no. By prediction  
>> on
>> new data not used for training, yes.
>>
>> -- Bert
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

David Winsemius, MD
West Hartford, CT