https://github.com/yoshoku/libsvmloader

LibSVMLoader loads (and dumps) dataset file with the libsvm file format.
https://github.com/yoshoku/libsvmloader

Last synced: 6 months ago
JSON representation

LibSVMLoader loads (and dumps) dataset file with the libsvm file format.

• Host: GitHub
• URL: https://github.com/yoshoku/libsvmloader
• Owner: yoshoku
• License: mit
• Created: 2017-08-12T02:09:06.000Z (about 8 years ago)
• Default Branch: main
• Last Pushed: 2025-01-01T11:36:32.000Z (9 months ago)
• Last Synced: 2025-04-15T03:46:24.771Z (6 months ago)
• Language: Ruby
• Homepage: https://rubygems.org/gems/libsvmloader
• Size: 41 KB
• Stars: 0
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE.txt
  • Code of conduct: CODE_OF_CONDUCT.md

Awesome Lists containing this project

README

          
# LibSVMLoader

[![Build Status](https://github.com/yoshoku/LibSVMLoader/workflows/build/badge.svg)](https://github.com/yoshoku/LibSVMLoader/actions?query=workflow%3Abuild)

[![Coverage Status](https://coveralls.io/repos/github/yoshoku/LibSVMLoader/badge.svg?branch=main)](https://coveralls.io/github/yoshoku/LibSVMLoader?branch=main)

[![Gem Version](https://badge.fury.io/rb/libsvmloader.svg)](https://badge.fury.io/rb/libsvmloader)

[![MIT License](https://img.shields.io/badge/License-MIT-blue.svg)](https://github.com/yoshoku/LibSVMLoader/blob/main/LICENSE.txt)

LibSVMLoader loads (and dumps) dataset file with the libsvm file format.

## Installation

Add this line to your application's Gemfile:

```ruby

gem 'libsvmloader'

```

And then execute:

    $ bundle

Or install it yourself as:

    $ gem install libsvmloader

## Usage

```ruby

require 'libsvmloader'

# for classification task

samples, labels = LibSVMLoader.load_libsvm_file('foo.t')

LibSVMLoader.dump_libsvm_file(samples, labels, 'bar.t')

# for regression task

samples, target_variables = LibSVMLoader.load_libsvm_file('foo.t', label_dtype: 'float')

LibSVMLoader.dump_libsvm_file(samples, target_variables, 'bar.t')

```

When using with Numo::NArray:

```ruby

require 'libsvmloader'

require 'numo/narray'

samples, labels = LibSVMLoader.load_libsvm_file('foo.t')

samples_na = Numo::NArray[*samples]

labels_na = Numo::NArray[*labels]

LibSVMLoader.dump_libsvm_file(samples_na.to_a, labels_na.to_a, 'bar.t')

```

When using with NMatrix:

```ruby

require 'libsvmloader'

require 'nmatrix/nmatrix'

samples, labels = LibSVMLoader.load_libsvm_file('foo.t')

samples_nm = N[*samples]

labels_nm = N[*labels]

LibSVMLoader.dump_libsvm_file(samples_nm.to_a, labels_nm.to_a, 'bar.t')

```

## Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/yoshoku/libsvmloader.

## License

The gem is available as open source under the terms of the [MIT License](http://opensource.org/licenses/MIT).