Markovite

Markovite, a markov chain generator that is simple to use and easy to hack. You can use this gem to generate random text using a corpus.

Add this line to your application's Gemfile:

gem 'markovite'

And then execute:

$ bundle

Or install it yourself as:

$ gem install markovite

To hit the ground running, you can do the following:

require "markovite"

chain = Markovite::Chain.new
chain << "tiny-shakespeare.txt"

chain.make_sentence_of_length(140)

This will train the chain model on a file named tiny-shakespear.txt and return a sentence that is no longer than 140 characters, which does not appear in the training corpus.

You can push multiple files or strings into one chain instance. By default, chains will be initialized with a depth of 2.

A new chain instance can optionally be initialized with a filename as the first argument, and the desired depth size as the second argument.

chain = Markovite::Chain.new("tiny-shakespeare.txt", 3)

Instances of chains can be modified by using the more specific chain.parse_file("sherlock.txt", 3) or chain.parse_string("I am a giant hamster person") The second argument, the chain depth, will default to 2.

chain.make_sentence

Returns one sentence that does not appear in the corpus, or nil if the model is unable to generate a unique sentence.

chain.make_sentences(5)

Returns five sentences that do not appear in the corpus, or nil if the model is unable to generate a unique sentence.

chain.make_sentence_starts_with("Hello listeners")

Returns a sentence that begins with the argument, or nil if the model is unable to generate a unique sentence.

chain.make_sentence_of_length(280)

Returns a sentence with the length of 280 characters, or nil if the model is unable to generate a unique sentence.

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/f3mshep/markovite. 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.

The gem is available as open source under the terms of the MIT License.

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