[R] Fwd: About classification methods.

[David Winsemius]

On Feb 11, 2011, at 9:07 PM, Jaeik Cho wrote:

> Yes, this point i can understand your suggestion and I should read  
> "HOW TO ASK GOOD QUESTIONS".
> I'm a just new mailing list, also a R user for researching on  
> graduate school.
>
> Any person can make mistake, also it can be effect to other people,  
> however a good person is teaching good way.
> Anyway, actually I couldn't understand why you telling me like this,  
> but sorry for my English and stupid first mailing list user.

Have your read the Posting Guide yet?

>
> Sorry again.
>
> ps. I don't know also why should I put your name on CC Bert, sorry.
> Last of all, R is a kind of professional software. It means many of  
> R user is high level educated person at least I think.
> Also, so many foreigner using this software who is not good for  
> English writing. Please little bit more understand foreign users.

The fact that people asking and answering questions are highly  
educated is even more reason for including more background and asking  
a detailed question. My point, which seems to have been misunderstood,  
is that using a formal language such as R (or mathematics) is probably  
a superior method of getting the real questions across the language  
barrier. At the moment your questions seem too vague to allow a  
specific answer.


>
> Thanks.
>
> On Feb 11, 2011, at 4:57 PM, David Winsemius wrote:
>
>>
>> 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
>>
>

David Winsemius, MD
West Hartford, CT