1 | // $Id: PearsonDistance.cc 683 2006-10-11 22:20:36Z jari $ |
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2 | |
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3 | /* |
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4 | Copyright (C) The authors contributing to this file. |
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5 | |
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6 | This file is part of the yat library, http://lev.thep.lu.se/trac/yat |
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7 | |
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8 | The yat library is free software; you can redistribute it and/or |
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9 | modify it under the terms of the GNU General Public License as |
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10 | published by the Free Software Foundation; either version 2 of the |
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11 | License, or (at your option) any later version. |
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12 | |
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13 | The yat library is distributed in the hope that it will be useful, |
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14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 | General Public License for more details. |
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17 | |
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18 | You should have received a copy of the GNU General Public License |
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19 | along with this program; if not, write to the Free Software |
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20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA |
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21 | 02111-1307, USA. |
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22 | */ |
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23 | |
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24 | #include "PearsonDistance.h" |
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25 | #include "AveragerPair.h" |
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26 | #include "AveragerPairWeighted.h" |
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27 | #include "yat/utility/vector.h" |
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28 | |
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29 | namespace theplu{ |
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30 | namespace yat{ |
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31 | namespace statistics{ |
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32 | |
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33 | double PearsonDistance::operator()(const utility::vector& x, |
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34 | const utility::vector& y) const |
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35 | { |
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36 | AveragerPair ap; |
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37 | ap.add_values(x,y); |
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38 | return 1-ap.correlation(); |
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39 | } |
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40 | |
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41 | double PearsonDistance::operator()(const utility::vector& x, |
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42 | const utility::vector& y, |
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43 | const utility::vector& wx, |
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44 | const utility::vector& wy) const |
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45 | { |
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46 | AveragerPairWeighted ap; |
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47 | ap.add_values(x,y,wx, wy); |
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48 | return 1-ap.correlation(); |
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49 | } |
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50 | |
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51 | }}} // of namespace statistics, yat, and theplu |
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