1 | // $Id: InputRanker.cc 469 2005-12-19 14:58:29Z peter $ |
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2 | |
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3 | #include <c++_tools/classifier/InputRanker.h> |
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4 | |
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5 | #include <c++_tools/classifier/DataView.h> |
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6 | #include <c++_tools/classifier/VectorView.h> |
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7 | #include <c++_tools/classifier/Target.h> |
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8 | #include <c++_tools/statistics/ROC.h> |
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9 | #include <c++_tools/utility/stl_utility.h> |
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10 | |
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11 | #include <vector> |
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12 | #include <utility> |
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13 | |
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14 | namespace theplu { |
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15 | namespace classifier { |
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16 | |
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17 | |
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18 | InputRanker::InputRanker(const DataView& data, |
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19 | const Target& target, |
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20 | statistics::Score& score_object) |
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21 | { |
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22 | size_t nof_genes = data.rows(); |
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23 | size_t nof_samples = data.columns(); |
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24 | if (!train_set_.size()){ |
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25 | train_set_.resize(nof_samples); |
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26 | for (size_t i=0; i<nof_samples; i++) |
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27 | train_set_[i]=i; |
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28 | } |
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29 | |
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30 | //scoring each input |
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31 | std::vector<std::pair<size_t, double> > score; |
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32 | for (size_t i=0; i<nof_genes; i++) { |
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33 | double area = score_object.score(target,VectorView(data,i,false)); |
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34 | std::pair<size_t, double> tmp(i,area); |
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35 | score.push_back(tmp); |
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36 | } |
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37 | |
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38 | //sort the scores and assign id_ and rank_ |
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39 | sort(score.begin(), score.end(), |
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40 | utility::pair_value_compare<size_t, double>()); |
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41 | |
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42 | for (size_t i=0; i<nof_genes; i++){ |
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43 | id_[i]=score[nof_genes-i-1].first; |
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44 | rank_[id_[i]]=i; |
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45 | } |
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46 | } |
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47 | |
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48 | |
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49 | |
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50 | InputRanker::InputRanker(const DataView& data, |
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51 | const Target& target, |
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52 | statistics::Score& score_object, |
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53 | const DataView& weight) |
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54 | { |
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55 | size_t nof_genes = data.rows(); |
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56 | size_t nof_samples = data.columns(); |
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57 | if (!train_set_.size()){ |
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58 | train_set_.resize(nof_samples); |
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59 | for (size_t i=0; i<nof_samples; i++) |
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60 | train_set_[i]=i; |
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61 | } |
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62 | //scoring each input |
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63 | std::vector<std::pair<size_t, double> > score; |
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64 | for (size_t i=0; i<nof_genes; i++) { |
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65 | double area = score_object.score(target, VectorView(data,i,false), |
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66 | VectorView(weight,i,false)); |
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67 | std::pair<size_t, double> tmp(i,area); |
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68 | score.push_back(tmp); |
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69 | } |
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70 | //sort the scores and assign id_ and rank_ |
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71 | sort(score.begin(), score.end(), |
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72 | utility::pair_value_compare<size_t, double>()); |
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73 | |
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74 | for (size_t i=0; i<nof_genes; i++){ |
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75 | id_[i]=score[nof_genes-i-1].first; |
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76 | rank_[id_[i]]=i; |
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77 | } |
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78 | } |
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79 | |
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80 | |
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81 | }} // of namespace classifier and namespace theplu |
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