bernoulli |
Bernoulli (naive Bayes) model used |

c++ |
written (partially or fully) in C++ |

crm-114 |
CRM-114 used |

feature-engineering |
used more advanced pre-processing, feature engineering etc. |

haskell |
written (partially or fully) in Haskell |

java |
written (partially or fully) in Java |

k-means |
k-means or its variant used |

linear-regression |
linear regression used |

lisp |
written (partially or fully) in Lisp |

logistic-regression |
logistic regression used |

multinomial |
multinomial (naive Bayes) model used |

naive-bayes |
Naive Bayes Classifier used |

neural-network |
neural network used |

perl |
written (partially or fully) in Perl |

python |
written (partially or fully) in Python 2/3 |

r |
written (partially or fully) in R |

ready-made |
Machine Learning framework/library/toolkit used, algorithm was not implemented by the submitter |

regexp |
handcrafted regular expressions used |

ruby |
written (partially or fully) in Ruby |

scikit-learn |
sci-kit learn used |

self-made |
algorithm implemented by the submitter, no framework used |

stupid |
simple, stupid rule-based solution |

vowpal-wabbit |
Vowpal Wabbit used |