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

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

All Implemented Interfaces:

java.io.Serializable, Component, Algorithm, Model

public class DegreePrestige
extends ModelShell
implements Algorithm

Calculates centrality and prestige based on actor degree. see Freeman79
Freeman, L. "Centrality in social networks: I. Conceptual clarification." Social Networks. 1:215--239.

See Also:

Serialized Form

Field Summary

static long

serialVersionUID

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

listener

Constructor Summary

DegreePrestige()
Creates a new instance of addDegreeCentrality

Method Summary

void	calculateCentrality(Graph g) Calaculate Out-Degree of each actor
void	calculatePrestige(Graph g) Calaculate In-Degree of each actor
void	execute(Graph g) execute the algorithm against the given graph
java.util.List<IODescriptor>	getInputType() The input type describes all the different kinds of graph objects that are utilized (and hence required) by this object.
java.util.List<IODescriptor>	getOutputType() The output type describes all the different kinds of graph objects that are created during the execution of this algorithm.
Properties	getParameter() List of all parameters this component accepts.
Parameter	getParameter(java.lang.String param) Returns the specific parameter identified by its key-name.
void	init(Properties map) Parameters for initialization 'name' - name of this isntance.
DegreePrestige	prototype() All Components implement the prototype pattern.

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

serialVersionUID

public static final long serialVersionUID

See Also:

Constant Field Values

Constructor Detail

DegreePrestige

public DegreePrestige()

Creates a new instance of addDegreeCentrality

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

calculatePrestige

public void calculatePrestige(Graph g)

Calaculate In-Degree of each actor

Parameters:

g - graph to be modified

calculateCentrality

public void calculateCentrality(Graph g)

Calaculate Out-Degree of each actor

Parameters:

g - graph to be modified

getInputType

public java.util.List<IODescriptor> 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:

IODescriptor array for this component

See Also:

IODescriptor

getOutputType

public java.util.List<IODescriptor> 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:

IODescriptor array for this component

See Also:

IODescriptor

getParameter

public Properties 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(Properties map)

Parameters for initialization

1. 'name' - name of this isntance. Default is 'Degree Centrality'.
2. 'relation' - type (relation) of link to use. Default is 'Knows'.
3. 'actorType' - type (mode) of actor to use. Default is 'User'.
4. 'normalize' - should the sum of squares of all entries be normalized to 1. Default is 'false'.

Input 1 - Link
Output 1 - ActorProperty
Output 2 - ActorProperty
Output 3 - GraphProperty
Output 4 - GraphProperty
Output 5 - GraphProperty
Output 6 - GraphProperty

Specified by:

init in interface Component

Parameters:

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

prototype

public DegreePrestige prototype()

Description copied from interface: Component

All Components implement the prototype pattern. The new parameter has no common resources to the original that are not static resources o the class.

Specified by:

prototype in interface Component

Specified by:

prototype in interface Algorithm

Returns:

default-parameter version of the same class as the original.