Package edu.uct.ibr.bayesnet

Class BNGraph

java.lang.Object

edu.uct.ibr.bayesnet.BNGraph

public class BNGraph
extends java.lang.Object

Constructor Summary

Constructors

Constructor	Description
BNGraph(edu.ksu.cis.bnj.bbn.BBNGraph graph)
BNGraph(java.lang.String path)

Method Summary

Modifier and Type	Method	Description
boolean	addEdge(BNNode src, BNNode dest)	Add an edge between the src and dest nodes.
boolean	addImplicationStatement(Implication impl)	Add an implication statement to the knowledge base and modify the graph correctly
edu.ksu.cis.bnj.bbn.BBNGraph	getBBNGraph()	Get this BBNGraph
edu.ksu.cis.bnj.bbn.BBNGraph	getBotBBNGraph()	Get the bot BBNGraph
double	getConditionalProbabilities(java.util.Hashtable<java.lang.String[],java.util.Hashtable<java.lang.String,java.lang.String>> cP)	Get the probability table, given a hashtable of observations
java.util.Set	getGraphNodes()	get a set of all the nodes in the graph
java.lang.String	getGraphOutput()	Get a toString of this graph
java.util.ArrayList<Implication>	getKnowledgebase()	Get the knowledge base
java.util.ArrayList<java.lang.String>	getKnowledgebaseOutput()	Get the knowledgebase as a set of strings
java.util.ArrayList<Implication>	getLogicalObservations()	Get all logical observations made on the IBN
java.lang.String	getName()	Get the name of this graph
BNNode	getNode(java.lang.String nodeName)	Get a node in the graph
java.util.ArrayList<java.lang.String>	getNodeNames()	Get the names of the nodes in this network
java.util.ArrayList<java.lang.String>	getNodeOutputs()	Get the output names for all the nodes in this network
java.util.ArrayList<java.lang.String>	getObservations()	Get the probabilistic observations make on this network
BNNode.Relationship	getRelationship(BNNode antecedent, BNNode consequent)	Get the relationship between the two nodes.
void	load(java.lang.String path)	Load a file into this BNGraph
void	observe(BNNode node, java.lang.String value)	Make a probabilistic observation on a node in this network
void	observe(Implication impl)	Make a logical observation on this network
double	queryBotNetwork(java.lang.String queryNode, java.lang.String queryValue, java.util.Hashtable<java.lang.String,java.lang.String> observations)	Make a query on a specific node and value given a set of observations
java.lang.String	queryBotNetwork(java.util.Hashtable<java.lang.String,java.lang.String> observations)	Make a query on the bottom network given a set of observations
void	save(java.lang.String outputFile)	Save this BNGraph to the outputFile.
java.lang.String	toString()	The output of this graph

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

BNGraph

public BNGraph(edu.ksu.cis.bnj.bbn.BBNGraph graph)

BNGraph

public BNGraph(java.lang.String path)

Method Detail

load

public void load(java.lang.String path)

Load a file into this BNGraph

Parameters:

path -

addEdge

public boolean addEdge(BNNode src,
                       BNNode dest)

Add an edge between the src and dest nodes. Returns a boolean as the success of the operation we have to make a whole new CPF because: when a CPF is made, it takes in a list of node names that can be in the CPF. As we are adding new values to the CPF, it doesnt accept them as they arent in this initial list. There is no way of adding nodes to this list. Thus we have to make a whole new CPF and 'reset' the nodes CPF

Parameters:

src -

dest -

getBotBBNGraph

public edu.ksu.cis.bnj.bbn.BBNGraph getBotBBNGraph()

Get the bot BBNGraph

Returns:

save

public void save(java.lang.String outputFile)

Save this BNGraph to the outputFile. The file type will be .bif if Knowledge base is empty, else it will be a .ibif.

getNode

public BNNode getNode(java.lang.String nodeName)

Get a node in the graph

Parameters:

nodeName -

Returns:

getGraphNodes

public java.util.Set getGraphNodes()

get a set of all the nodes in the graph

Returns:

getLogicalObservations

public java.util.ArrayList<Implication> getLogicalObservations()

Get all logical observations made on the IBN

Returns:

getRelationship

public BNNode.Relationship getRelationship(BNNode antecedent,
                                           BNNode consequent)

Get the relationship between the two nodes. Relationships defined in BNNode

Parameters:

antecedent -

consequent -

Returns:

getBBNGraph

public edu.ksu.cis.bnj.bbn.BBNGraph getBBNGraph()

Get this BBNGraph

Returns:

getName

public java.lang.String getName()

Get the name of this graph

Returns:

addImplicationStatement

public boolean addImplicationStatement(Implication impl)

Add an implication statement to the knowledge base and modify the graph correctly

Parameters:

impl -

Returns:

getConditionalProbabilities

public double getConditionalProbabilities(java.util.Hashtable<java.lang.String[],java.util.Hashtable<java.lang.String,java.lang.String>> cP)

Get the probability table, given a hashtable of observations

Parameters:

cP -

Returns:

queryBotNetwork

public java.lang.String queryBotNetwork(java.util.Hashtable<java.lang.String,java.lang.String> observations)

Make a query on the bottom network given a set of observations

Parameters:

observations -

Returns:

queryBotNetwork

public double queryBotNetwork(java.lang.String queryNode,
                              java.lang.String queryValue,
                              java.util.Hashtable<java.lang.String,java.lang.String> observations)

Make a query on a specific node and value given a set of observations

Parameters:

queryNode -

queryValue -

observations -

Returns:

getKnowledgebase

public java.util.ArrayList<Implication> getKnowledgebase()

Get the knowledge base

Returns:

getKnowledgebaseOutput

public java.util.ArrayList<java.lang.String> getKnowledgebaseOutput()

Get the knowledgebase as a set of strings

Returns:

toString

public java.lang.String toString()

The output of this graph

Overrides:

toString in class java.lang.Object

getObservations

public java.util.ArrayList<java.lang.String> getObservations()

Get the probabilistic observations make on this network

Returns:

observe

public void observe(BNNode node,
                    java.lang.String value)

Make a probabilistic observation on a node in this network

Parameters:

node -

value -

observe

public void observe(Implication impl)

Make a logical observation on this network

Parameters:

impl -

getGraphOutput

public java.lang.String getGraphOutput()

Get a toString of this graph

Returns:

getNodeNames

public java.util.ArrayList<java.lang.String> getNodeNames()

Get the names of the nodes in this network

Returns:

getNodeOutputs

public java.util.ArrayList<java.lang.String> getNodeOutputs()

Get the output names for all the nodes in this network

Returns: