Fix weights mistakes in computation

lib/featureselect/FeatureSelect.h

@@ -0,0 +1,38 @@
+#ifndef SELECT_K_BEST_WEIGHTED_H
+#define SELECT_K_BEST_WEIGHTED_H
+#include <map>
+#include <vector>
+#include <string>
+using namespace std;
+namespace features {
+    typedef float precision_t;
+    typedef int value_t;
+    typedef vector<value_t> sample_t;
+    typedef vector<sample_t> samples_t;
+    typedef vector<value_t> labels_t;
+    typedef vector<precision_t> score_t, weights_t;
+
+    class SelectKBestWeighted {
+    private:
+        const samples_t samples;
+        const labels_t labels;
+        const weights_t weights;
+        const int k;
+        bool nat; // use natural log or log2
+        int numFeatures, numClasses, numSamples;
+        bool fitted;
+        score_t scores; // scores of the features
+        labels_t features; // indices of the selected features
+        precision_t entropyLabel();
+        precision_t entropy(const sample_t&);
+        precision_t conditionalEntropy(const int);
+        precision_t MutualInformation(const int);
+    public:
+        SelectKBestWeighted(samples_t&, labels_t&, weights_t&, int, bool);
+        SelectKBestWeighted& fit();
+        score_t getScores() const;
+        labels_t getFeatures() const; //Return the indices of the selected features
+        static inline string version() { return "0.1.0"; };
+    };
+}
+#endif