Changeset 2096

Timestamp:

Nov 5, 2009, 2:07:09 AM (13 years ago)

Author:

Peter

Message:

fixes #542 - modified SVM::predict to calculate predictions as geometric distance from decision hyperplane.

Location:

branches/0.5-stable

Files:

• NEWS (modified) (1 diff)
• yat/classifier/SVM.cc (modified) (2 diffs)

branches/0.5-stable/NEWS

@@ -4 +4 @@
 
 Version 0.5.5 (released NOT YET)
+
+  SVM::predict is calculated as geometric distance (issue #542)
 
   A complete list of closed tickets can be found here [[br]]

branches/0.5-stable/yat/classifier/SVM.cc

@@ -6 +6 @@
   Copyright (C) 2007 Jari Häkkinen, Peter Johansson
   Copyright (C) 2008 Jari Häkkinen, Peter Johansson, Markus Ringnér
+  Copyright (C) 2009 Peter Johansson
 
   This file is part of the yat library, http://dev.thep.lu.se/yat
@@ -89 +90 @@
         margin_ += 2*alpha_(i)*target(i)*kernel_mod(i,j)*alpha_(j)*target(j);
     }
+    margin_ = std::sqrt(margin_);
   }