From f11adda11d1275bcff45b20c15194d7a76bb6b59 Mon Sep 17 00:00:00 2001
From: astrojhgu <astrojhgu@ed2142bd-67ad-457f-ba7c-d818d4011675>
Date: Sun, 23 Aug 2009 13:08:26 +0000
Subject: git-svn-id: file:///home/svn/opt_utilities@54
 ed2142bd-67ad-457f-ba7c-d818d4011675

---
 example/Makefile            |  8 +++++
 example/test_optimizer.cpp  | 73 +++++++++++++++++++++++++++++++++++++++++++++
 methods/aga/aga.hpp         | 10 +++----
 methods/powell/bas_util.hpp | 17 ++++++-----
 4 files changed, 95 insertions(+), 13 deletions(-)
 create mode 100644 example/Makefile
 create mode 100644 example/test_optimizer.cpp

diff --git a/example/Makefile b/example/Makefile
new file mode 100644
index 0000000..24fc4f0
--- /dev/null
+++ b/example/Makefile
@@ -0,0 +1,8 @@
+target=test_optimizer
+
+
+test_optimizer:test_optimizer.cpp
+	g++ -o $@ $< -I ../ -O2
+
+clean:
+	rm -f $(target)
diff --git a/example/test_optimizer.cpp b/example/test_optimizer.cpp
new file mode 100644
index 0000000..99b9ec2
--- /dev/null
+++ b/example/test_optimizer.cpp
@@ -0,0 +1,73 @@
+#include <core/optimizer.hpp>
+#include <methods/powell/powell_method.hpp>
+#include <methods/aga/aga.hpp>
+#include <vector>
+#include <iostream>
+
+
+//declear a class derived from func_obj
+class foo
+  :public opt_utilities::func_obj<double,std::vector<double> >
+//                              ^^^^^^^^double is the return type
+//                                      vector is the parameter type
+{
+  double do_eval(const std::vector<double>& p)
+  {
+    double result=0;
+    for(int i=0;i<p.size();++i)
+      {
+	result+=p[i]*p[i];
+      }
+    return result;
+  }
+
+  foo* do_clone()const
+  {
+    return new foo(*this);//default implement of the do_clone
+  }
+};
+
+
+int main()
+{
+  //define an optimizer object
+  opt_utilities::optimizer<double,std::vector<double> > op;
+  //set the optimization method
+  op.set_opt_method(opt_utilities::powell_method<double,std::vector<double> >());
+  //attach the object function
+  op.set_func_obj(foo());
+
+  //define the starting point
+  std::vector<double> p(3);
+  p[0]=p[1]=p[2]=10;
+  
+  //set the starting point
+  op.set_start_point(p);  
+  std::cout<<"starting optimization from:"<<
+    p[0]<<" "<<p[1]<<" "<<p[2]<<std::endl;
+
+  //set the precision
+  op.set_precision(1E-6);
+  //perform the optimization
+  p=op.optimize();
+
+  //output the result
+  std::cout<<"optimization result:"<<
+    p[0]<<" "<<p[1]<<" "<<p[2]<<std::endl;
+
+  //Let's change another method
+  op.set_opt_method(opt_utilities::aga_method<double,std::vector<double> >());
+  //define the lower and upper limit
+  p[0]=p[1]=p[2]=-10;
+  op.set_lower_limit(p);
+  p[0]=p[1]=p[2]=10;
+  op.set_upper_limit(p);
+  //set the start point
+  op.set_start_point(p);
+  //set precision
+  op.set_precision(1E-10);
+  //start optimize
+  p=op.optimize();
+  std::cout<<"optimization result:"<<
+    p[0]<<" "<<p[1]<<" "<<p[2]<<std::endl;
+}
diff --git a/methods/aga/aga.hpp b/methods/aga/aga.hpp
index f87d215..577e526 100644
--- a/methods/aga/aga.hpp
+++ b/methods/aga/aga.hpp
@@ -146,7 +146,6 @@ namespace opt_utilities
 			  uni_rand(get_element(lower_bound,j),
 				   get_element(upper_bound,j))
 			  );
-	      
 	    }
 	}
       
@@ -186,7 +185,7 @@ namespace opt_utilities
 	  sum+=samples[i].v;
 	}
       
-      std::sort(samples.begin(),samples.end(),vp_comp<double,std::vector<double> >());
+      std::sort(samples.begin(),samples.end(),vp_comp<rT,pT>());
       if(sum2/samples.size()-pow(sum/samples.size(),2)<threshold)
 	{
 	  return false;
@@ -240,16 +239,17 @@ namespace opt_utilities
       buffer.resize(n2);
       double n_per_dim=pow((double)n0,1./get_size(lower_bound));
       resize(reproduction_box,get_size(lower_bound));
+      
       for(int i=0;i<get_size(lower_bound);++i)
 	{
-	
+
 	  set_element(reproduction_box,i,
 		      (get_element(upper_bound,i)-
 		      get_element(lower_bound,i))/n_per_dim);
 	}
-
+      
       while(iter()){}
-
+      
       return samples.begin()->p;
     }
 
diff --git a/methods/powell/bas_util.hpp b/methods/powell/bas_util.hpp
index 743dc3c..6a53f0a 100644
--- a/methods/powell/bas_util.hpp
+++ b/methods/powell/bas_util.hpp
@@ -1,6 +1,7 @@
 #ifndef BAS_UTIL
 #define BAS_UTIL
 #include <core/opt_traits.hpp>
+#include <algorithm>
 namespace opt_utilities
 {
   template <typename T>
@@ -31,15 +32,15 @@ namespace opt_utilities
     opt_eq(b,c);
     opt_eq(c,d);
   }
-  template <typename T>  
-  void swap(T& ax,T& bx)
-  {
+  //  template <typename T>  
+  //  void swap(T& ax,T& bx)
+  //{
     //  swap(ax,bx);
-    T temp;
-    opt_eq(temp,ax);
-    opt_eq(ax,bx);
-    opt_eq(bx=temp);
-  }
+    //    T temp;
+    //opt_eq(temp,ax);
+    //opt_eq(ax,bx);
+    //opt_eq(bx,temp);
+    //}
   
   template <typename T>
   T sign(const T& a,const T& b)
-- 
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