1 | #ifndef _theplu_yat_normalization_quantile_normalizer_ |
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2 | #define _theplu_yat_normalization_quantile_normalizer_ |
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3 | |
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4 | /* |
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5 | Copyright (C) 2008 Peter Johansson |
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6 | |
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7 | This file is part of the yat library, http://dev.thep.lu.se/yat |
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8 | |
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9 | The yat library is free software; you can redistribute it and/or |
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10 | modify it under the terms of the GNU General Public License as |
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11 | published by the Free Software Foundation; either version 2 of the |
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12 | License, or (at your option) any later version. |
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13 | |
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14 | The yat library is distributed in the hope that it will be useful, |
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15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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17 | General Public License for more details. |
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18 | |
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19 | You should have received a copy of the GNU General Public License |
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20 | along with this program; if not, write to the Free Software |
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21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
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22 | 02111-1307, USA. |
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23 | */ |
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24 | |
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25 | namespace theplu { |
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26 | namespace yat { |
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27 | namespace utility { |
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28 | class Matrix; |
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29 | } |
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30 | namespace normalization { |
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31 | |
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32 | /** |
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33 | \brief Perform quantile normalization |
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34 | |
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35 | \since New in yat 0.5 |
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36 | */ |
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37 | class QuantileNormalizer |
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38 | { |
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39 | public: |
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40 | /** |
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41 | The \a matrix is normalized by sorting each column, replacing |
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42 | each value with the average across rows, and undo the sorting |
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43 | in step 1. This results in a \a matrix in which each column has |
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44 | the same distribution of data, and the rank of an element |
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45 | within a column is preserved in the normalization. |
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46 | */ |
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47 | void operator()(const utility::Matrix& matrix, |
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48 | utility::Matrix& result) const; |
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49 | }; |
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50 | |
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51 | }}} // end of namespace normalization, yat and thep |
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52 | #endif |
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