Changeset 727 for trunk/yat/regression/MultiDimensional.cc

Timestamp:

Jan 4, 2007, 4:06:14 PM (16 years ago)

Author:

Peter

Message:

fixes #177

File:

• trunk/yat/regression/MultiDimensional.cc (modified) (2 diffs)

trunk/yat/regression/MultiDimensional.cc

@@ -80 +80 @@
 
 
-  double MultiDimensional::prediction_error(const utility::vector& x) const
+  double MultiDimensional::prediction_error2(const utility::vector& x) const
+  {
+    return standard_error2(x)+chisquare_;
+  }
+
+
+  double MultiDimensional::standard_error2(const utility::vector& x) const
   {
     double s2 = 0;
@@ -88 +94 @@
         s2 += 2*covariance_(i,j)*x(i)*x(j);
     }
-    return sqrt(s2+chisquare_);
-  }
-
-
-  double MultiDimensional::standard_error(const utility::vector& x) const
-  {
-    double s2 = 0;
-    for (size_t i=0; i<x.size(); ++i){
-      s2 += covariance_(i,i)*x(i)*x(i);
-      for (size_t j=i+1; j<x.size(); ++j)
-        s2 += 2*covariance_(i,j)*x(i)*x(j);
-    }
-    return sqrt(s2);
+    return s2;
   }