Difference between revisions of "LIBSVM -- A Library for Support Vector Machines"

From Cohen Courses
Jump to navigationJump to search
m
Line 5: Line 5:
  
 
Main features of LIBSVM include
 
Main features of LIBSVM include
 
+
* Different SVM formulations
    * Different SVM formulations
+
* Efficient multi-class classification
    * Efficient multi-class classification
+
* Cross validation for model selection
    * Cross validation for model selection
 
 
     * Probability estimates
 
     * Probability estimates
 
     * Weighted SVM for unbalanced data
 
     * Weighted SVM for unbalanced data

Revision as of 23:37, 30 September 2010

LIBSVM is an integrated software for support vector classification, (C-SVC, nu-SVC), regression (epsilon-SVR, nu-SVR) and distribution estimation (one-class SVM). It supports multi-class classification. It is actively patched and has interfaces in many different language including Java, Matlab, C# etc. [1]

Since version 2.8, it implements an SMO-type algorithm proposed in this paper: R.-E. Fan, P.-H. Chen, and C.-J. Lin. Working set selection using second order information for training SVM. Journal of Machine Learning Research 6, 1889-1918, 2005. You can also find a pseudo code there. (how to cite LIBSVM)

Main features of LIBSVM include

  • Different SVM formulations
  • Efficient multi-class classification
  • Cross validation for model selection
   * Probability estimates
   * Weighted SVM for unbalanced data
   * Both C++ and Java sources
   * GUI demonstrating SVM classification and regression
   * Python, R (also Splus), MATLAB, Perl, Ruby, Weka, Common LISP, CLISP, Haskell and LabVIEW interfaces. C# .NET code is available.
     It's also included in some data mining environments: RapidMiner and PCP.
   * Automatic model selection which can generate contour of cross valiation accuracy.

Its website maintains a list of packages for download and includes a practical guide for beginner to start with [2].