Search results for: libsvm

SVM regression with libsvm

SVM is mostly commonly used for binary classifications. But one branch of SVM, SVM regression or SVR, is able to fit a continuous function to data. This is particularly useful when the predicted variable is continuous. Here I tried some very simple c
Xu Cui
1 min read

SVM (support vector machine) with libsvm

I am learning svm lately and tried libsvm. It’s a good package. Linear kernel example (support vectors are in circles): Nonlinear example (radial basis) 3-class example Basic procedure to use libsvm: Preprocess your data. This including normali
Xu Cui
1 min read

SVM regression on time series, is there a lag?

It would be nice if we can predict the future. For example, give the following time series, can we predict the next point? Let’s use SVM regression, which is said to be powerful. We use the immediate past data point as the predictor. We train o
Xu Cui
1 min read

Winner take all in SVM?

updated: 2010/01/05, add plot of original data Assume our data contains two features and they are highly correlated (say, r>0.9). The 1st feature does slightly better than the 2nd one in classifying the data. The question is, is the weight of the
Xu Cui
1 min read