Tagging in ruby

Introduction

The Ruby binding for Citar provides an easy to use Ruby module for interacting with the Citar library. The Ruby module can be retrieved via git, and is part of the regular citar distribution:

git clone git://github.com/langkit/citar.git

The module can then be installed by executing the following commands in the ruby subdirectory:

gem build citar.gemspec
gem install citar

For actual use of this module, the Citar tagger library should be installed.

Tagging

Use of the Ruby Citar module is straightforward: first construct a using the constructor of the Citar::Tagger class, providing the paths of the lexicon and the ngram model. Afterwards, the tag of the constructed instance can be used to tag a sentence. For example:

> require 'citar'
=> true
> tagger = Citar::Tagger.new('../citar/models/brown/brown-simplified.lexicon',
    '../citar/models/brown/brown-simplified.ngrams')
=> #<Citar::Tagger:0x7fd210721c28 @tagger=#<FFI::Pointer address=0x16e4bb0>>
> tagger.tag(['The', 'cat', 'is', 'on', 'the', 'mat', '.'])
=> ["AT", "NN", "BEZ", "IN", "AT", "NN", "."]