normalize_labels.hpp File Reference

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Namespaces

namespace  mlpack
 

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


namespace  mlpack::data
 

Functions to load and save matrices.


Functions

template<typename eT >
void mlpack::data::NormalizeLabels (const arma::Col< eT > &labelsIn, arma::Col< 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.
template<typename eT >
void mlpack::data::RevertLabels (const arma::Col< size_t > &labels, const arma::Col< eT > &mapping, arma::Col< 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.

Detailed Description

Author:
Ryan Curtin

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.

This file is part of MLPACK 1.0.8.

MLPACK is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

MLPACK is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details (LICENSE.txt).

You should have received a copy of the GNU General Public License along with MLPACK. If not, see <http://www.gnu.org/licenses/>.

Definition in file normalize_labels.hpp.


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