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Questions tagged [libsvm]

LIBSVM is a library for Support Vector Machines

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 comprises of both C++ and Java sources, and interfaces to several commonly used languages, such as Python, MATLAB, R, Ruby, Perl, PHP and Haskell.

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Support vector machine (SVM) hyper plane formula

I'm working on image classification system, i used sift and support vector machine. I want to make it a web application using java applet, How can i use SVM results to classify new images? Is there a formula for svm hyper plane that i can use? or…
Nermee Alami
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What is LIBSVM label in ARFF term?

I just begin with Data Mining technique and get familiar with some data file format. I have a first look at *.ARFF and now *.LIBSVM. Can you teel me what is the first number at the begin of line? Can I understand that number in ARFF term +1…
nvcnvn
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Crash after reading training data for libsvm

I have scaled my training data and tried to do cross validation to obtain the best parameters but I don't know how to do. I tried to read my scaled training data and assign them to an svm_problem variable: svm_node My_svm_node[16400][157]; svm_node…
PsP
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how to get the margin from libSVM

I'm using the libSVM for .net. After running the SVM training i get a vector of alphas. As i understand, the margin is the minimum distance between any point and the decision hyperplane. I'm not sure how to do that using the alphas. Thanks.
Daniel Miron
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Is LIBSVM suitable for many categories and samples?

I'm building a text classifier, which should be able to give probabilities that a document belongs to certain categories (i.e. 80% fiction, 30% marketing etc) I believe Libsvm does this via the "predict" method, but the problem is that I have…
David Niki
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The Gnuplot output is set to display 'onscreen' how to change the program so that plot output is directed to a folder I am providing the program below

From the below code the accuracy values of the ROC can be predicted and GNUplot was used to display the plot output. But the output is set to 'onscreen'. Thus the plot just appears for few seconds and closes. I want to direct the plot output to a…
Lakshmi KrishnaKumaar
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Lasvm documentation and information

I have thousands of samples for training and test and I want to use SVM with RBF kernel to classify them. The problem is the fact that the Libsvm's implementation of RBF kernel is very slow when using 10k or more data. The main focus of the slow…
mad
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How do I run libsvm on linux?

I'm having trouble installing libsvm, presently im running via a ubuntu virtual machine . When I follow the instructions such that on Unix systems, "type make' to build thesvm-train' and `svm-predict'programs. Run them without arguments to show the…
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One-class Support Vector Machine Sensitivity Drops when the number of training sample increase

I am using One-Class SVM for outlier detections. It appears that as the number of training samples increases, the sensitivity TP/(TP+FN) of One-Class SVM detection result drops, and classification rate and specificity both increase. What's the best…
leon
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I want to develop human emotion recognition application by analyzing voice features,how do I start this?I don't have idea.

I want to develop human emotion recognition application by analyzing voice features,how do I start this?I don't have idea. …
cat1197
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why using support vector machine?

I have some questions about SVM : 1- Why using SVM? or in other words, what causes it to appear? 2- The state Of art (2017) 3- What improvements have they made?
Abdelghani Info
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