How do I choose parameters for one-class svm as training data are in only one class?.I would like to solve L2-loss SVM (i.e., error term is quadratic).How could I use different data partitions? But on some systems CV accuracy is the same in several runs.Why my cross-validation results are different from those in the Practical Guide?.
After doing cross validation, why there is no model file outputted ?. What method does libsvm use for multi-class SVM ? Why don't you use the "1-against-the rest" method ?. I would like to use my own kernel but find out that there are two subroutines for kernel evaluations: k_function() and kernel_function(). How do I disable screen output of svm-train and svm-predict ?. large -m) on a linux machine, why sometimes I get "segmentation fault ?" On 32-bit machines, if I use a large cache (i.e. How do I get the distance between a point and the hyperplane?. The program keeps running (with output, i.e. The program keeps running (without showing any output). What is the difference between nu-SVC and C-SVC?. Does it make a big difference if I scale each attribute to instead of ?. Should I scale training and testing data in a similar way?. The number of free support vectors is large. Does libsvm have special treatments for linear SVM?. Should I use float or double to store numbers in the cache ?. Can you explain more about the model file?. The output of training C-SVM is like the following. Is there a program to check if my data are in the correct format?. Why sometimes the last line of my data is not read by svm-train?. 
Why do you consider sparse format ? Will the training of dense data be much slower ?.Why sometimes not all attributes of a data appear in the training/model files ?.What is the difference between "." and "*" outputed during training?.I am an MS windows user but why only one (svm-toy) of those precompiled.I have modified the source and would like to build the graphic interface "svm-toy" on MS windows.On unix machines, I got "error in loading shared libraries" or "cannot open shared object file." What happened ?.Is there a repository of additional tools based on libsvm?.I would like to use libsvm in my software.Where are change log and earlier versions?.
Some applications which have used libsvm.Some courses which have used libsvm as a tool.Q2:_Installation_and_running_the_program(9).
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