work/mixpp/bdm/stat/emix.h

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#ifndef MX_H
#define MX_H

#include "libBM.h"
#include "libEF.h"
//#include <std>

using namespace itpp;

class emix : public epdf {
protected:
        vec w;
        Array<epdf*> Coms;
public:
        emix ( RV &rv ) : epdf ( rv ) {};
        void set_parameters ( const vec &w, const Array<epdf*> &Coms );

        vec sample() const;
        vec mean() const {
                int i; vec mu=zeros ( rv.count() );
                for ( i=0;i<w.length();i++ ) {mu+=w ( i ) *Coms ( i )->mean(); }
                return mu;
        }
        double evalpdflog ( const vec &val ) const {
                int i;
                double sum=0.0;
                for ( i=0;i<w.length();i++ ) {sum+=w ( i ) *Coms ( i )->evalpdflog ( val );}
                return log ( sum );
        };

//Access methods
        vec& _w() {return w;}
};

class eprod: public epdf {
protected:
        Array<epdf*> epdfs;
        Array<mpdf*> mpdfs;
public:


};

class mmix : public mpdf {
protected:
        Array<mpdf*> Coms;
        emix Epdf;
public:
        mmix ( RV &rv, RV &rvc ) : mpdf ( rv, rvc ), Epdf ( rv ) {ep=&Epdf;};
        void set_parameters ( const vec &w, const Array<mpdf*> &Coms ) {
                Array<epdf*> Eps ( Coms.length());

                for ( int i=0;i<Coms.length();i++ ) {mpdf* Ci=Coms(i);
                 Eps ( i ) =& ( Coms ( i )->_epdf() );}
                Epdf.set_parameters ( w,Eps );
        };

        void condition ( const vec &cond ) {
                for ( int i=0;i<Coms.length();i++ ) {Coms ( i )->condition ( cond );}
        };
};
#endif //MX_H

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