Changeset 1315 for trunk/yat

Timestamp:

May 19, 2008, 11:36:49 PM (15 years ago)

Author:

Peter

Message:

fixed some docs and bugs for the unweighted operator refs #20

Location:

trunk/yat/statistics

Files:

• WilcoxonFoldChange.cc (modified) (1 diff)
• WilcoxonFoldChange.h (modified) (2 diffs)

trunk/yat/statistics/WilcoxonFoldChange.cc

@@ -49 +49 @@
     //Peter, should reserve the vector to avoid reallocations   
     for (size_t i=0; i<target.size(); i++) {
-      if (target(i)!=1) continue;
+      if (target.binary(i)) continue;
       for (size_t j=0; j<target.size(); j++) {
-        if (target(j)==1) continue;
-        distance.push_back(value(i)-value(j));
+        if (!target.binary(j))
+          distance.push_back(value(i)-value(j));
       }
     }

trunk/yat/statistics/WilcoxonFoldChange.h

@@ -36 +36 @@
 namespace statistics {
 
-  ///
-  /// @brief WilcoxonFoldChange 
-  ///
+  /**
+     @brief WilcoxonFoldChange 
+     
+     WilcoxonFoldChange is calculated as follows: Having \f$ n_+ \f$
+     samples from class + and \f$ n_- \f$ from class -, all \f$ n_+
+     n_- \f$ pairwise distances are calculated, and the
+     WilcoxonFoldChange is the median of these values.
+  */
   class WilcoxonFoldChange : public Score
   {
@@ -49 +54 @@
 
     ///
-    /// @return difference of the means of the two classes
+    /// @return median of all pairwise differences
     ///
     /// @param target defining the two groups (Target.binary() )