nz.ac.waikato.mcennis.rat.graph.algorithm.prestige
Class OptimizedLinkBetweeness

java.lang.Object
  nz.ac.waikato.mcennis.rat.graph.model.ModelShell
      nz.ac.waikato.mcennis.rat.graph.algorithm.prestige.OptimizedLinkBetweeness

All Implemented Interfaces:

java.io.Serializable, Component, Algorithm, Listener, Model

public class OptimizedLinkBetweeness
extends ModelShell
implements Algorithm, Listener

Class built upon OptimizedPathBase that calculates Betweeness for links. OptimizedPathBase only records one geodesic path for each actor pair, otherwise same as the betweeness metric deefined in Freeman79.

Freeman, L. "Centrality in social networks: I. Conceptual clarification." Social Networks. 1:215--239.

See Also:

Serialized Form

Field Summary

protected OptimizedLinkBetweenessCore	core
protected double	maxBetweeness

Fields inherited from class nz.ac.waikato.mcennis.rat.graph.model.ModelShell

listener

Constructor Summary

OptimizedLinkBetweeness()
Creates a new instance of OptimizedBetweeness

Method Summary

protected void	doCleanup(PathNode[] path, Graph g)
void	execute(Graph g) execute the algorithm against the given graph
InputDescriptor[]	getInputType() The input type describes all the different kinds of graph objects that are utilized (and hence required) by this object.
OutputDescriptor[]	getOutputType() The output type describes all the different kinds of graph objects that are created during the execution of this algorithm.
Parameter[]	getParameter() List of all parameters this component accepts.
Parameter	getParameter(java.lang.String param) Returns the specific parameter identified by its key-name.
SettableParameter[]	getSettableParameter() Returns settable (i.e.
SettableParameter	getSettableParameter(java.lang.String param) Return the settable parameter namede by this key-name.
void	init(java.util.Properties map) Parameters to be initialized.
void	publishChange(Model m, int type, int argument) Recieve and update of the given type.

Methods inherited from class nz.ac.waikato.mcennis.rat.graph.model.ModelShell

addListener, fireChange

Methods inherited from class java.lang.Object

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

Methods inherited from interface nz.ac.waikato.mcennis.rat.graph.model.Model

addListener

Field Detail

maxBetweeness

protected double maxBetweeness

core

protected OptimizedLinkBetweenessCore core

Constructor Detail

OptimizedLinkBetweeness

public OptimizedLinkBetweeness()

Creates a new instance of OptimizedBetweeness

Method Detail

execute

public void execute(Graph g)

Description copied from interface: Algorithm

execute the algorithm against the given graph

Specified by:

execute in interface Algorithm

Parameters:

g - graph to be modified

doCleanup

protected void doCleanup(PathNode[] path,
                         Graph g)

getSettableParameter

public SettableParameter[] getSettableParameter()

Description copied from interface: Component

Returns settable (i.e. editable while running) parameters. If none exist, null is returned.

Specified by:

getSettableParameter in interface Component

Returns:

array of settable parameters

getSettableParameter

public SettableParameter getSettableParameter(java.lang.String param)

Description copied from interface: Component

Return the settable parameter namede by this key-name. If this parameter is not found or is not settable, null is returned.

Specified by:

getSettableParameter in interface Component

Parameters:

param - key-name of the parameter

Returns:

named settable parameter

getInputType

public InputDescriptor[] getInputType()

Description copied from interface: Component

The input type describes all the different kinds of graph objects that are utilized (and hence required) by this object. This result is only guaranteed to be fixed if structural parameters are not modified. This is an empty array if there is no input.

Specified by:

getInputType in interface Component

Returns:

InputDescriptor array for this component

See Also:

InputDescriptor

getOutputType

public OutputDescriptor[] getOutputType()

Description copied from interface: Component

The output type describes all the different kinds of graph objects that are created during the execution of this algorithm. The result is only guaranteed to be fixed if structural parameters are not modified. This is an empty array if there is no output.

Specified by:

getOutputType in interface Component

Returns:

OutputDescriptor array for this component

See Also:

OutputDescriptor

getParameter

public Parameter[] getParameter()

Description copied from interface: Component

List of all parameters this component accepts. Each parameter also has a distinct key-name used when initializing the object using the init method. If there are no parameters, null is returned.

Specified by:

getParameter in interface Component

Returns:

read-only array of Parameters

getParameter

public Parameter getParameter(java.lang.String param)

Description copied from interface: Component

Returns the specific parameter identified by its key-name. If no parameter is found with this key-name, null is returned.

Specified by:

getParameter in interface Component

Parameters:

param - key-name of the parameter

Returns:

named parameter

init

public void init(java.util.Properties map)

Parameters to be initialized. Subclasses should override if they provide any additional parameters or require additional inputs.

1. 'name' - Name of this instance of the algorithm. Default is ''.
2. 'relation' - type (relation) of link to calculate over. Default 'Knows'.
3. 'actorType' - type (mode) of actor to calculate over. Deafult 'User'.
4. 'normalize' - boolean for whether or not to normalize prestige vectors. Default 'false'.

Input 0 - Link
Output 0 - LinkProperty

Specified by:

init in interface Component

Parameters:

map - map of the given properties naming parameters and their values in a string

publishChange

public void publishChange(Model m,
                          int type,
                          int argument)

Description copied from interface: Listener

Recieve and update of the given type.

Specified by:

publishChange in interface Listener

Parameters:

m - model that changed

type - type of change that has occured