normalize_labels.hpp File Reference

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## Namespaces | |

mlpack | |

Linear algebra utility functions, generally performed on matrices or vectors. | |

mlpack::data | |

Functions to load and save matrices and models. | |

## Functions | |

template < typename eT , typename RowType > | |

void | NormalizeLabels (const RowType &labelsIn, arma::Row< size_t > &labels, arma::Col< eT > &mapping) |

Given a set of labels of a particular datatype, convert them to unsigned labels in the range [0, n) where n is the number of different labels. More... | |

template < typename eT > | |

void | RevertLabels (const arma::Row< size_t > &labels, const arma::Col< eT > &mapping, arma::Row< eT > &labelsOut) |

Given a set of labels that have been mapped to the range [0, n), map them back to the original labels given by the 'mapping' vector. More... | |

Often labels are not given as {0, 1, 2, ...} but instead {1, 2, ...} or even {-1, 1} or otherwise. The purpose of this function is to normalize labels to {0, 1, 2, ...} and provide a mapping back to those labels.

mlpack is free software; you may redistribute it and/or modify it under the terms of the 3-clause BSD license. You should have received a copy of the 3-clause BSD license along with mlpack. If not, see http://www.opensource.org/licenses/BSD-3-Clause for more information.

Definition in file normalize_labels.hpp.