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Feature selection problem
Posted: 30 June 2009 04:46 PM   [ Ignore ]  
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Hi,
When I try to perform feature selection, an error message appears.  For example:

>> gendatd([100,100],10);
>> 
w=featself(A)

??? 
Index exceeds matrix dimensions.

Error in ==> featsellr at 161
    w 
setlabels(w,featlist(state.I_opt,:));

Error in ==> featself at 67
        [w
,r] featsellr(a,crit,ksel,1,0,t,fid);

The same error appears when I use featselb and featselo. I don´t know what I can do to solve this problem. Thanks for your comments.

Luis Felipe

PS: I tried with version 4.1.3 and it worked correctly.

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Posted: 01 July 2009 10:47 AM   [ Ignore ]   [ # 1 ]  
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Dear Luis Felipe,

You are right, there is a bug related to the fact that we try to allow for empty feature label lists.
It has been corrected now.

Regards,

Bob Duin

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Posted: 01 July 2009 04:12 PM   [ Ignore ]   [ # 2 ]  
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OK. Thanks for your answer.

Luis Felipe

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Posted: 16 July 2009 06:49 PM   [ Ignore ]   [ # 3 ]  
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I am experiencing the exact same problem:

How can I fix it? Or download a newer version of the prtoolbox?

Thanks!!

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Posted: 16 July 2009 06:54 PM   [ Ignore ]   [ # 4 ]  
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Good question. I’ve downloaded the latest version, and it has the same error.

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Posted: 16 July 2009 06:56 PM   [ Ignore ]   [ # 5 ]  
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Luis-

Didn’t featself work for you with version 4.1.3?  If so, where did you download it?

Marc

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Posted: 16 July 2009 07:15 PM   [ Ignore ]   [ # 6 ]  
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I found another MATLAB toolbox that implements both the forward or backward selection algorithms.  It’s called the FSBOX.

Here’s a link to download:

http://www.robots.ox.ac.uk/~parg/software.html

Marc

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Posted: 16 July 2009 10:26 PM   [ Ignore ]   [ # 7 ]  
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Hi everybody,

before the bugfix becomes publicly available, you may download the previous version using this link:
http://prtools.org/files/prtools4.1.4.11Oct08.zip

Pavel

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Posted: 17 July 2009 12:50 PM   [ Ignore ]   [ # 8 ]  
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I think the problem with the website are solved.
The most recent version should work fine now for featself.

Bob Duin

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Posted: 16 September 2009 04:30 PM   [ Ignore ]   [ # 9 ]  
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Thank you very much.

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