svm

EMGU library OPENCV problem with native memroy management - does really work with mono?!

Hi to everyone, we are working in a project involving the use of EMGU and in particoular the SVM functions of OpenCV and we have a problem using Mono on a Ubuntu platform and we don't have this problem on windows. The problem appears when we call the Emgu.CV.ML.SVM.Train method. All the parameters are correct and we canno't debug the wra...

Get recall (sensitivity) and precision (PPV) values of a multi-class problem in PyML

I am using PyML for SVM classification. However, I noticed that when I evaluate a multi-class classifier using LOO, the results object does not report the sensitivity and PPV values. Instead they are 0.0: from PyML import * from PyML.classifiers import multi mc = multi.OneAgainstRest(SVM()) data = VectorDataSet('iris.data', labelsColum...

Can an SVM learn incrementally?

I am using a multi-dimensional SVM classifier (SVM.NET, a wrapper for libSVM) to classify a set of features. Given an SVM model, is it possible to incorporate new training data without having to recalculate on all previous data? I guess another way of putting it would be: is an SVM mutable? ...

Help me understand linear separability in a binary SVM

I'm cross-posting this from math.stackexchange.com because I'm not getting any feedback and it's a time-sensitive question for me. My question pertains to linear separability with hyperplanes in a support vector machine. According to Wikipedia: ...formally, a support vector machine constructs a hyperplane or set of hyperplane...