Provided by: libocas-tools_0.97+dfsg-5_amd64
msvmocas - train a multi-class linear SVM classifier
msvmocas [options] example_file model_file
msvmocas is a program that trains a multi-class linear SVM classifier using the Optimized Cutting Plane Algorithm for Support Vector Machines (OCAS) and produces a model file. example_file is a file with training examples in SVM^light format, and model_file is the file in which to store the learned linear rule f(x)=W'*x. model_file contains M columns and D lines, where M is the number of classes and D the number of dimensions, corresponding to the elements of the matrix W [D x M].
A summary of options is included below. General options: -h Show summary of options. -v (0|1) Set the verbosity level (default: 1) Learning options: -c float Regularization constant C. (default: 1) -n integer Use only the first integer examples for training. By default, integer equals the number of examples in example_file. Optimization options: -m (0|1) Solver to be used: 0 ... standard cutting plane (equivalent to BMRM, SVM^perf) 1 ... OCAS (default) -s integer Cache size for cutting planes. (default: 2000) Stopping conditions: -a float Absolute tolerance TolAbs: halt if QP-QD <= TolAbs. (default: 0) -r float Relative tolerance TolAbs: halt if QP-QD <= abs(QP)*TolRel. (default: 0.01) -q float Desired objective value QPValue: halt is QP <= QPValue. (default: 0) -t float Halts if the solver time (loading time is not counted) exceeds the time given in seconds. (default: infinity)
Train the multi-class SVM classifier from example file example4_train.light, with the regularization constant C=10, verbosity switched off, and save model to msvmocas.model: msvmocas -c 10 -v 0 example4_train.light msvmocas.model Compute the testing error of the classifier stored in msvmocas.model with linclassif(1) using testing examples from example4_test.light and save the predicted labels to example4_test.pred: linclassif -e -o example4_test.pred example4_test.light msvmocas.model
msvmocas was written by Vojtech Franc <email@example.com> and Soeren Sonnenburg <Soeren.Sonnenburg@tu-berlin.de>. This manual page was written by Christian Kastner <firstname.lastname@example.org>, for the Debian project (and may be used by others). June 16, 2010 MSVMOCAS(1)