git-svn-id: file:///home/svn/opt_utilities@197 ed2142bd-67ad-457f-ba7c-d818d4011675

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diff --git a/distributions/kmm_component.hpp b/distributions/kmm_component.hpp
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+/**
+   \file kmm_component.hpp
+   \brief rpresents a distribution composed of more than one kmm_components
+   \author Junhua Gu
+ */
+
+
+#ifndef KMM_COMPONENT_MODEL_H_
+#define KMM_COMPONENT_MODEL_H_
+#define OPT_HEADER
+#include <core/fitter.hpp>
+#include <cmath>
+#include <misc/optvec.hpp>
+#include <sstream>
+#include <iostream>
+
+
+
+namespace opt_utilities
+{
+  template <typename T>
+  class kmm_component
+    :public model<optvec<T>,optvec<T>,optvec<T>,std::string>
+  {
+  private:
+    std::vector<model<optvec<T>,optvec<T>,optvec<T>,std::string>*> components;
+    std::vector<int> weight_num;
+  private:
+    kmm_component* do_clone()const
+    {
+      return new kmm_component<T>(*this);
+    }
+
+    const char* do_get_type_name()const
+    {
+      return "Multi-distribution";
+    }
+  public:
+    kmm_component()
+    {
+      //this->push_param_info(param_info<optvec<T> >("x0",0));
+      //this->push_param_info(param_info<optvec<T> >("sigma",1));
+    }
+
+    kmm_component(const kmm_component& rhs)
+    {
+      for(int i=0;i<rhs.components.size();++i)
+	{
+	  if(i>=1)
+	    {
+	      add_component(*rhs.components[i],rhs.get_param_info(rhs.weight_num[i-1]).get_value());
+	    }
+	  else
+	    {
+	      add_component(*rhs.components[i]);
+	    }
+	}
+      for(int i=0;i<rhs.get_num_params();++i)
+	{
+	  set_param_info(rhs.get_param_info(i));
+	}
+      
+    }
+
+    kmm_component& operator=(const kmm_component& rhs)
+    {
+      if(this==&rhs)
+	{
+	  return rhs;
+	}
+      for(int i=0;i<components.size();++i)
+	{
+	  components[i]->destroy();
+	}
+      components.clear();
+      for(int i=0;i<rhs.components.size();++i)
+	{
+	  add_component(*rhs.components[i]);
+	}
+      for(int i=0;i<rhs.get_num_params();++i)
+	{
+	  set_param_info(rhs.get_param_info(i));
+	}
+      
+    }
+
+    ~kmm_component()
+    {
+      for(int i=0;i<components.size();++i)
+	{
+	  components[i]->destroy();
+	}
+    }
+
+
+  public:
+    void add_component(const model<optvec<T>,optvec<T>,optvec<T>,std::string>& m,const T& w=0)
+    {
+      int morder=components.size();
+      components.push_back(m.clone());
+      std::ostringstream oss;
+      oss<<morder;
+      std::string smorder=oss.str();
+      if(components.size()>1)
+	{
+	  param_info<optvec<T>,std::string> p1(std::string("_w")+smorder,w);	  
+	  this->push_param_info(p1);
+	  weight_num.push_back(this->get_num_params()-1);
+	}
+      int np=m.get_num_params();
+      for(int i=0;i<np;++i)
+	{
+	  param_info<optvec<T>,std::string> p(m.get_param_info(i));
+	  param_info<optvec<T>,std::string> p1(p.get_name()+smorder,p.get_value());
+	  this->push_param_info(p1);
+	}
+    }
+
+    optvec<T> convert_unit_sph(const optvec<T>& p)
+    {
+      int ndim=p.size()+1;
+      optvec<double> result(ndim);
+      result[0]=1;
+      for(int i=0;i<p.size();++i)
+	{
+	  for(int j=0;j<=i;++j)
+	    {
+	      result[j]*=cos(p[i]);
+	    }
+	  result[i+1]=sin(p[i]);
+	}
+      for(int i=0;i<result.size();++i)
+	{
+	  result[i]=result[i]*result[i];
+	}
+      return result;
+    }
+
+    
+    optvec<T> do_eval(const optvec<T>& x,const optvec<T>& param)
+    {
+      T result(0);
+      optvec<T> weight_angle;
+      for(int i=0;i<weight_num.size();++i)
+	{
+	  weight_angle.push_back(param[weight_num[i]]);
+	}
+      optvec<T> weight(convert_unit_sph(weight_angle));
+      
+      int pnum=0;
+      for(int i=0;i<components.size();++i)
+	{
+	  T temp_result=0;
+	  optvec<T> p(components[i]->get_num_params());
+	  for(int j=0;j<p.size();++j)
+	    {
+	      p[j]=param[pnum++];
+	    }
+	  result+=(components[i]->eval(x,p)[0]*weight[i]);
+	  ++pnum;
+	}
+      optvec<T> result1(1);
+      result1[0]=result;;
+      return result1;
+    }
+
+    optvec<T> eval_unsumed(const optvec<T>& x,const optvec<T>& param)
+    {
+      optvec<T> weight_angle;
+      for(int i=0;i<weight_num.size();++i)
+	{
+	  weight_angle.push_back(param[weight_num[i]]);
+	}
+      optvec<T> weight(convert_unit_sph(weight_angle));
+      optvec<T> result(components.size());
+      int pnum=0;
+      for(int i=0;i<components.size();++i)
+	{
+	  T temp_result=0;
+	  optvec<T> p(components[i]->get_num_params());
+	  for(int j=0;j<p.size();++j)
+	    {
+	      p[j]=param[pnum++];
+	    }
+	  result[i]=(components[i]->eval(x,p)[0]*weight[i]);
+	  ++pnum;
+	}
+      
+      return result;
+    }
+
+    
+
+  private:
+    std::string do_get_information()const
+    {
+      return "";
+    }
+  };
+}
+
+
+
+#endif
+//EOF