Project

rumale-svm

0.0
The project is in a healthy, maintained state
Rumale-SVM provides support vector machine algorithms of LIBSVM and LIBLINEAR with Rumale interface.
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 Project Readme

Rumale::SVM

Build Status Coverage Status Gem Version BSD 3-Clause License Documentation

Rumale::SVM provides support vector machine algorithms in LIBSVM and LIBLINEAR with Rumale interface. Many machine learning libraries use LIBSVM and LIBLINEAR as background libraries of support vector machine algorithms. On the other hand, Rumale implements support vector machine algorithms based on the mini-batch stochastic gradient descent method implemented in Ruby. Rumale::SVM adds the functions of support vector machine similar to general machine learning libraries to Rumale.

Installation

Add this line to your application's Gemfile:

gem 'rumale-svm'

And then execute:

$ bundle

Or install it yourself as:

$ gem install rumale-svm

Documentation

Usage

Download pendigits dataset from LIBSVM DATA web page.

$ wget https://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/multiclass/pendigits
$ wget https://www.csie.ntu.edu.tw/~cjlin/libsvmtools/datasets/multiclass/pendigits.t

Training linear support vector classifier.

require 'rumale/svm'
require 'rumale/dataset'

samples, labels = Rumale::Dataset.load_libsvm_file('pendigits')
svc = Rumale::SVM::LinearSVC.new(random_seed: 1)
svc.fit(samples, labels)

File.open('svc.dat', 'wb') { |f| f.write(Marshal.dump(svc)) }

Evaluate classifiction accuracy on testing datase.

require 'rumale/svm'
require 'rumale/dataset'

samples, labels = Rumale::Dataset.load_libsvm_file('pendigits.t')
svc = Marshal.load(File.binread('svc.dat'))

puts "Accuracy: #{svc.score(samples, labels).round(3)}"

Execution result.

$ ruby rumale_svm_train.rb
$ ls svc.dat
svc.dat
$ ruby rumale_svm_test.rb
Accuracy: 0.835

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/yoshoku/rumale-svm. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

The gem is available as open source under the terms of the BSD-3-Clause License.

Code of Conduct

Everyone interacting in the Rumale::Svm project’s codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.