Alchemy: Node Class Reference

List of all members.


Public Member Functions
	Node (int predId, SuperPred const &superPred, Array< int > const &constants, Domain *const &domain)
	Constructor.
	~Node ()
	Destructor.
int	getPredId ()
int	getSuperPredId ()
int	getParentSuperPredId ()
SuperPred *	getSuperPred ()
Array< int > *	getConstants ()
int	getGroundNodeCount ()
int	getNumLinks ()
	Returns the number of links of (or number of factors attached to) this node.
Link *	getLink (int index)
void	getMessage (int index, double msgs[])
	Gets the incoming message from a certain link.
void	addAuxLink (Link *link)
	Adds an auxiliary link (factor along with all the relevant information about counts etc.
void	addLink (Link *link, double inpMsgs[2])
	Adds the link (factor along with all the relevant information about counts etc.
void	addFactors (Array< Factor * > const &allFactors, LinkIdToTwoWayMessageMap const &lidToTWMsg)
	Adds the factors with appropriate counts, also add the node to the corresponding factor.
void	receiveMessage (double inpMsgs, Link const &link)
	Receives the message sent over a link.
double	getExp ()
double *	getProbs (double *const &probs)
	Gets the probabilities for this node - it is simply the product of messages coming at this node.
void	sendMessage ()
	Sends the messages to all the factor nodes connected to this node.
void	sendAuxMessage ()
	Sends the messages to all the auxiliary factor nodes connected to this node.
void	moveToNextStep ()
	Updates the stored msgs and update the msgProduct.
ostream &	print (ostream &out)

Detailed Description

Member Function Documentation

void Node::getMessage	(	int	index,
		double	msgs[]
	)			`[inline]`

Gets the incoming message from a certain link.

Parameters:

	index	Index of the link
	msgs	msgs[0] contains the message from the node when it is false, msgs[1] contains the message from the node when it is true.

Definition at line 177 of file node.h.

00178   {
00179     msgs[0] = (*msgsArr_)[index][0];
00180     msgs[1] = (*msgsArr_)[index][1];
00181   }

void Node::addAuxLink ( Link * link ) [inline]

Adds an auxiliary link (factor along with all the relevant information about counts etc.

Definition at line 187 of file node.h.

References Array< Type >::append().

00188   {
00189     auxLinks_->append(link);
00190   }

void Node::addLink	(	Link *	link,
		double	inpMsgs[2]
	)			`[inline]`

Adds the link (factor along with all the relevant information about counts etc.

Definition at line 196 of file node.h.

References Array< Type >::append(), and Link::getCount().

Referenced by addFactors().

00197   {
00198     links_->append(link);
00199     double *msgs;
00200     msgs = new double[2];
00201 
00202     double cnt = link->getCount(); 
00203     for (int i = 0; i < 2; i++)
00204     {
00205       if (inpMsgs)
00206       {
00207         msgs[i] = inpMsgs[i];
00208       }
00209       else
00210       {
00211         msgs[i] = 0;
00212       }
00213       msgProds_[i] = msgProds_[i] + cnt*msgs[i];
00214     }
00215 
00216     msgsArr_->append(msgs);
00217     msgs = new double[2];
00218     nextMsgsArr_->append(msgs);
00219   }

Node Class Reference

Public Member Functions

Detailed Description

Member Function Documentation