Changeset 37 for trunk/src/SVM.h

Timestamp:

Feb 13, 2004, 4:46:31 PM (19 years ago)

Author:

Peter

Message:

SVM.get_output added

File:

• trunk/src/SVM.h (modified) (4 diffs)

trunk/src/SVM.h

@@ -8 +8 @@
 #include "vector.h"
 #include "matrix.h"
+
 
 // Standard C++ includes
@@ -34 +35 @@
     */
     inline thep_gsl_api::vector get_alpha() const;
+
+    /**
+       Function will return the output from SVM
+    */
+    inline thep_gsl_api::vector get_output() const;
+
    
       
@@ -41 +48 @@
     thep_gsl_api::vector target_;
     thep_gsl_api::vector alpha_;
+    double bias_;
 
     /**
-       Private function that determines when to stop the training
+       Private function that determines when to stop the training.
+       The test is done in two steps. First, we check that the
+       functional margin is at least 2 - epsilon. Second, we check
+       that the gap between the primal and the dual object is less
+       than epsilon.
+
     */
     bool SVM::stop(const thep_gsl_api::vector& target_,
@@ -55 +68 @@
     return alpha_;
   }
+
+  thep_gsl_api::vector SVM::get_output() const  
+  {
+    thep_gsl_api::vector bias(target_.size(), false, false);
+    bias.set_all(bias_);
+    return kernel_ * alpha_.mul_elements(target_) + bias;
+    
+  }
 }; // namespace thep_c++_tools