Rumale::SVM

Rumale::SVM provides support vector machine algorithms using LIBSVM and LIBLINEAR with Rumale interface.

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

• Rumale::SVM API 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 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.