message.cc.svn-base

Probabilistic graphical models in matlab.

#include <Message.h>
#include <Generic.h>

//*************** Message Implementation *******************//

Message::Message()
{
}

Message::Message(const RandomVariable & a , const RandomVariable & b): index(a.get_index() ), values ( static_cast < const DiscreteRandomVariable & > (b).get_number_values(), 0.0 )
{
}

Message::Message(const unsigned int a, const RandomVariable & b): index(a ), values ( static_cast < const DiscreteRandomVariable & > (b).get_number_values(), 0.0 )
{
}

void Message::reduce()
{
	fast_double_reduce_over (values.begin(), values.end() );
}

#ifndef NDEBUG

void Message::display()
{
	std::cout << "Displaying Message (index is " << index << " ): ";
	
	for ( std::vector <double>::iterator it = values.begin(); it != values.end(); it++)
	{
		std::cout << *it << ", ";
	}
	
	std::cout << std::endl;
}

#endif

//*************** End of Message Implementation *******************//

//*************** ExtractFromMessage Implementation *****************//

ExtractFromMessage::ExtractFromMessage( const unsigned int b, const bool a): forbidden(a), index_of_extraction(b), forbidden_index(0)
{
}

ExtractFromMessage::ExtractFromMessage(const RandomVariable & rv_a): forbidden(false), index_of_extraction( static_cast < const DiscreteRandomVariable & > (rv_a).last_sampled_value), forbidden_index(0)
{
}

ExtractFromMessage::ExtractFromMessage(const RandomVariable & rv_a, const RandomVariable & rv_b): forbidden(true), index_of_extraction( static_cast < const DiscreteRandomVariable & > (rv_a).last_sampled_value), forbidden_index(rv_b.get_index())
{
}

ExtractFromMessage::ExtractFromMessage(const RandomVariable & rv_a, const unsigned int b): forbidden(true), index_of_extraction( static_cast < const DiscreteRandomVariable & > (rv_a).last_sampled_value), forbidden_index(b)
{
}

double ExtractFromMessage::operator ()  (const Message & x) const
{ 
	//cout << "Processed msg: " << x.get_index() << " : " << x.get_value_by_index (index_of_extraction) << endl;
	
	if ( (forbidden == true) && (x.index == forbidden_index) )
	{
		return 1.0;
	}
	
	else 
	{ 
		return x.values[index_of_extraction];
	}
}

//*************** End of ExtractFromMessage Implementation *****************//