Programming language: Crystal
License: MIT License
Tags: Machine Learning    
Latest version: v0.3.0

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Cadmium is a Natural Language Processing (NLP) library for Crystal.

For full API documentation check out the docs.

For more complete and up to date information about specific parts of Cadmium, check out each relevant shard repository.

Shard name Description
cadmium_tokenizer Contains several types of string tokenizers
cadmium_stemmer Contains a Porter stemmer, useful to get the stems of english words
cadmium_ngrams Contains methods to obtain unigram, bigrams, trigrams or ngrams from strings
cadmium_classifier Contains two probabilistic classifiers used in NLP operations like language detection or POS tagging for example
cadmium_readability Analyzes blocks of text and determine, using various algorithms, the readability of the text.
cadmium_tfidf Calculates the Term Frequency–Inverse Document Frequency of a corpus
cadmium_glove Pure Crystal implementation of Global Vectors for Word Representations
cadmium_pos_tagger Tags each token of a text with its Part Of Speech category
cadmium_lemmatizer Returns the lemma of each given string token
cadmium_summarizer Extracts the most meaningful sentences of a text to create a summary
cadmium_sentiment Evaluates the sentiment of a text
cadmium_distance Provides two string distance algorithms
cadmium_transliterator Provides the ability to transliterate UTF-8 strings into pure ASCII so that they can be safely displayed in URL slugs or file names.
cadmium_phonetics Allows to match a string with its sound representation
cadmium_inflector Allows to inflect english words (nouns, verbs and numbers)
cadmium_graph EdgeWeightedDigraph represents a digraph, you can add an edge, get the number vertexes, edges, get all edges and use toString to print the Digraph.
cadmium_trie A trie is a data structure for efficiently storing and retrieving strings with identical prefixes, like "meet" and "meek".
cadmium_wordnet Pure crystal implementation of Stanford NLPs WordNet
cadmium_util A collection of useful utilities used internally in Cadmium.
cadmium_language_detector Returns the most probable language code of the analysed text.


Your project should only include the Cadmium shard(s) you need.

However, in case you want to test out all of Cadmium in a simple way, you can install all modules of the project in a few lines.

Add this to your application's shard.yml:

    github: cadmiumcr/cadmium
    branch: master


  1. Fork it ( https://github.com/cadmiumcr/cadmium/fork )
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create a new Pull Request


This project exists thanks to all the people who contribute.