Comments on My Outsourced Brain: Matlab Svmlight Interface

training is a matrix, See the commented text in th...

2011-12-14T20:09:43.675+01:00

training is a matrix, See the commented text in the function:
% Columns are variables, rows are observations.
% It is assumed that the first column of the matrix is the target. Targets are elements of {-1,1}.

Can you get an example of use. like which format i...

2011-12-14T19:48:08.000+01:00

Can you get an example of use.
like which format is the training parameter?

Thanks!!

This is for SVM not for KNN. For KNN you can use m...

2011-04-07T11:43:31.762+02:00

This is for SVM not for KNN. For KNN you can use matlab's knn functions. For ROC/AUC statistics see my post on ROC.

Thank you. Will try this. My blog: Silk Flowers

hi, would you plz describe for me how can I use t...

2011-04-01T07:39:37.889+02:00

hi, would you plz describe for me how can I use this code for KNN classifier?or do you have a code for ROC of KNN and Glass data set?I need it for a part of my project,plz help me,thank you

Just for my own reference, you can do this without...

2011-03-21T17:47:43.340+01:00

Just for my own reference, you can do this without matlab using standard *nix commands.

To convert from csv to svmlight format:
awk -F"," '{printf $1" "; for(i=2;i<=NF;i++) {printf i-1":"$i " "}; print ""}' hepatitis.data > hepatitis.svmlight

Separate into training and test if needed:
head -n 155 hepatitis.svmlight > hepatitis.svmlight.training
tail -n 155 hepatitis.svmlight > hepatitis.svmlight.test

Run training and classification:
./svm_learn -c 1 -# 1 -w 3 -l 10 hepatitis.svmlight.training .model
./svm_classify hepatitis.svmlight.test .model .outputfile

thank so much this information could help me to do...

2010-11-18T17:26:46.916+01:00

thank so much this information could help me to do a fix in my computer , these kind of blog can help some people.

@Dylan: You are welcome. Glad it helped.

2010-03-01T09:55:50.986+01:00

@Dylan: You are welcome. Glad it helped.

This is exactly what I need. Thank you very much!

2010-03-01T06:37:21.819+01:00

This is exactly what I need. Thank you very much!

Please don't copy-paste this code if you are i...

2009-10-29T19:43:57.100+01:00

Please don't copy-paste this code if you are in a windows environment. Download it from snipplr.