ivory.smrf.model

Class MarkovRandomField

java.lang.Object

ivory.smrf.model.MarkovRandomField

public class MarkovRandomField
extends Object

A Markov Random Field.

Author:

Don Metzler

Constructor Summary

Constructors

Constructor and Description
MarkovRandomField(String[] queryTerms, RetrievalEnvironment env) Creates a MarkovRandomField object.

Method Summary

Methods

Modifier and Type	Method and Description
void	addClique(Clique c) Adds a clique to this MRF.
List<Clique>	getCliques() Returns the cliques in this MRF.
GlobalEvidence	getGlobalEvidence() Returns the GlobalEvidence associated with this MRF.
int	getNextCandidate() Returns the next candidate for scoring.
List<GraphNode>	getNodes() Returns the nodes associated with this MRF.
String[]	getQueryTerms() Returns the query terms.
RetrievalEnvironment	getRetrievalEnvironment() Returns the retrieval environment associated with this MRF.
void	initialize() Initializes this MRF.
void	removeAllCliques() Removes all cliques from this MRF.
String	toString() Returns a human-readable representation of this MRF.
String	toString(boolean verbose) Returns a human-readable representation of this MRF.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

MarkovRandomField

public MarkovRandomField(String[] queryTerms,
                 RetrievalEnvironment env)

Creates a MarkovRandomField object.

Parameters:

queryTerms - query terms

env - retrieval environment (for computing global evidence)

Method Detail

addClique

public void addClique(Clique c)

Adds a clique to this MRF.

Parameters:

c - clique to add

getCliques

public List<Clique> getCliques()

Returns the cliques in this MRF.

Returns:

all cliques in this MRF

getGlobalEvidence

public GlobalEvidence getGlobalEvidence()

Returns the GlobalEvidence associated with this MRF.

Returns:

GlobalEvidence associated with this MRF

getNextCandidate

public int getNextCandidate()

Returns the next candidate for scoring.

Returns:

docno of the next candidate

getNodes

public List<GraphNode> getNodes()

Returns the nodes associated with this MRF.

Returns:

list of nodes associated with this MRF.

getQueryTerms

public String[] getQueryTerms()

Returns the query terms.

Returns:

query terms

getRetrievalEnvironment

public RetrievalEnvironment getRetrievalEnvironment()

Returns the retrieval environment associated with this MRF.

Returns:

the retrieval environment associated with this MRF

initialize

public void initialize()
                throws ConfigurationException

Initializes this MRF.

Throws:

ConfigurationException

removeAllCliques

public void removeAllCliques()

Removes all cliques from this MRF.

toString

public String toString()

Returns a human-readable representation of this MRF.

Overrides:

toString in class Object

Returns:

human-readable representation of this MRF

toString

public String toString(boolean verbose)

Returns a human-readable representation of this MRF.

Parameters:

verbose - verbose output