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Shiguo


11 total contributions since 2009

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Responded


Re: How to do a classification using Matlab?
Classify can handle any number of features. No need to reduce features. Not to say PCA as commented by Greg.

3 years ago | 12863 views

Responded


Re: norm? or R-squared?
Nice input John. I totally agree with you. I've read many of your posts and downloaded your files.

4 years ago | 36230 views

Responded


Re: weighted event in decision tree
The 2011a version has boosted decision tree function now. see http://www.mathworks.com/help/toolbox/stats/bsvjye9.html#bsvjyi5

5 years ago | 4237 views

Responded


Re: linear addressing of matrix row
Hi, I am also trying to convert .m file to mex file to speed up. I used the method you suggested. But get the following errors:...

5 years ago | 2738 views

Responded


Re: 64bits and memory problem
When I was using svmtrain in libsvm. I got this same problem. I write the software author (Chih-Jen Lin), he said that we need t...

7 years ago | 19925 views

Responded


Re: 64bits and memory problem
I am using svmtrain with a matlab64 (matlab 2009a) on win64. I got exactly the same problem... Has anyone found out the solution...

7 years ago | 19925 views

Responded


Re: How to create many vctors or arrays quickly
Great! I know what to do now. Thanks!

8 years ago | 1723 views

Posted


Is there any method similar to group by as in Access SQL
I have a matrix, the first column is the ID, representing fractories. The other columns are attributes of the fractories, for ex...

8 years ago | 1779 views

Responded


Re: How to create many vctors or arrays quickly
I see... Thanks. Shiguo

8 years ago | 1723 views

Responded


Re: How to create many vctors or arrays quickly
The [[a1, a2, ..., an] = zeros(s, n)], that's I want to create a s*n matrix, so that each column of the matrix will be an vector...

8 years ago | 1723 views

Posted


How to create many vctors or arrays quickly
I want to create n vectors, each has the size of s. I know I can do it like this: a1 = zeros(s, 1); a2 = a1; ... an = a1; But...

8 years ago | 1723 views