Help in using svmclassify

Hi,

the output of svm depends on the sign of (w*x+b),

how do i get the output of the exact value of w*x+b before it outputs the sign and then identify the classes?

Answer 1

[Ilya]

See this thread

Answer 2

[yi xiang low]

Thank you for your fast response,

Xnew = bsxfun(@plus,Xnew,shift); Xnew = bsxfun(@times,Xnew,scale);

for this two, what does bsxfun, @plus, @times exactly do?

i suppose this is to scale the data by subtracting the mean and scaling by the standard deviation.

what exactly is the code running behind bsxfun, @plus, @times? (i notice there are some other @, such as @plus, @rdivide - i suppose this is to unscale the data? )

[Ilya]

Please do not ask new questions by posting answers to your questions. Use comments for that.

Please learn to use the MATLAB documentation. You could type 'doc bsxfun' on your MATLAB command line or look here.

[yi xiang low]

Sorry, this is my first time posting - will take notice next time.

I accidentally typed help bxsfun instead of help bsxfun. Thank you