--- /dev/null
+//
+// abstractrandomforest.cpp
+// Mothur
+//
+// Created by Sarah Westcott on 10/1/12.
+// Copyright (c) 2012 Schloss Lab. All rights reserved.
+//
+
+#include "abstractrandomforest.hpp"
+
+/***********************************************************************/
+AbstractRandomForest::AbstractRandomForest(const std::vector < std::vector<int> > dataSet,
+ const int numDecisionTrees,
+ const string treeSplitCriterion = "informationGain")
+: dataSet(dataSet),
+numDecisionTrees(numDecisionTrees),
+numSamples((int)dataSet.size()),
+numFeatures((int)(dataSet[0].size() - 1)),
+globalDiscardedFeatureIndices(getGlobalDiscardedFeatureIndices()),
+globalVariableImportanceList(numFeatures, 0),
+treeSplitCriterion(treeSplitCriterion) {
+ m = MothurOut::getInstance();
+ // TODO: double check if the implemenatation of 'globalOutOfBagEstimates' is correct
+}
+
+/***********************************************************************/
+
+vector<int> AbstractRandomForest::getGlobalDiscardedFeatureIndices() {
+ try {
+ vector<int> globalDiscardedFeatureIndices;
+
+ // calculate feature vectors
+ vector< vector<int> > featureVectors(numFeatures, vector<int>(numSamples, 0));
+ for (int i = 0; i < numSamples; i++) {
+ if (m->control_pressed) { return globalDiscardedFeatureIndices; }
+ for (int j = 0; j < numFeatures; j++) { featureVectors[j][i] = dataSet[i][j]; }
+ }
+
+ for (int i = 0; i < featureVectors.size(); i++) {
+ if (m->control_pressed) { return globalDiscardedFeatureIndices; }
+ double standardDeviation = m->getStandardDeviation(featureVectors[i]);
+ if (standardDeviation <= 0){ globalDiscardedFeatureIndices.push_back(i); }
+ }
+
+ if (m->debug) {
+ m->mothurOut("number of global discarded features: " + toString(globalDiscardedFeatureIndices.size())+ "\n");
+ m->mothurOut("total features: " + toString(featureVectors.size())+ "\n");
+ }
+
+ return globalDiscardedFeatureIndices;
+ }
+ catch(exception& e) {
+ m->errorOut(e, "AbstractRandomForest", "getGlobalDiscardedFeatureIndices");
+ exit(1);
+ }
+}
+
+/***********************************************************************/
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