Class ScalefreeGeometry

Object

AbstractGeometry

AbstractNetwork

ScalefreeGeometry

public class ScalefreeGeometry
extends AbstractNetwork

Scale-free network that samples a power-law degree distribution and then constructs a matching undirected graph.

Field Summary

Fields

Modifier and Type	Field	Description
private double	sfExponent	Power-law exponent used when sampling the degree distribution.

Fields inherited from class AbstractNetwork

MAX_TRIALS, rng

Fields inherited from class AbstractGeometry

connectivity, EMPTY_LINKS, engine, features, in, isInterspecies, isRegular, isRewired, isSingle, isUndirected, isValid, kin, kout, logger, name, network2D, network3D, out, pAddwire, pRewire, size, specs, type

Constructor Summary

Constructors

Constructor	Description
ScalefreeGeometry(EvoLudo engine)	Create a scale-free geometry tied to the given engine.

Method Summary

Modifier and Type	Method	Description
protected boolean	checkSettings()	Hook for subclasses to implement geometry specific checks.
ScalefreeGeometry	clone()	Clone geometry.
boolean	equals(Object obj)
int	hashCode()
void	init()	Generates a connected undirected scale-free network by sampling degrees from a power-law distribution and then constructing a matching graph.
boolean	parse(String arg)	Parse geometry-specific CLI options.
private int	sampleDegree(RNGDistribution rng, double[] distr)	Sample a degree from the given distribution.
private static void	swap(int[] array, int a, int b)	Swap two entries within an array.

Methods inherited from class AbstractNetwork

initGeometryDegreeDistr

Methods inherited from class AbstractGeometry

addDirected, addEdgeAt, addLinkAt, addUndirected, alloc, check, clearLinksFrom, clearLinksTo, create, create, decodeGeometry, deriveCompetitionGeometry, displaySingle, encodeGeometry, enforceSize, getAddwire, getConnectivity, getEncodeKey, getFeatures, getLabel, getName, getNetwork2D, getNetwork3D, getRewire, getSize, getSpecs, getType, isConsistent, isGraphConnected, isInterspecies, isLattice, isNeighborOf, isRegular, isRewired, isSingle, isType, isUndirected, isUnique, parse, removeEdgeAt, removeLinkAt, rewire, rewireDirected, rewireEdgeAt, rewireLinkAt, rewireUndirected, setAddwire, setConnectivity, setInterspecies, setName, setNetwork2D, setNetwork3D, setRewire, setSingle, setSize, setType, swapEdges, usage, warn

Methods inherited from class Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Details

sfExponent

private double sfExponent

Power-law exponent used when sampling the degree distribution.

Constructor Details

ScalefreeGeometry

public ScalefreeGeometry(EvoLudo engine)

Create a scale-free geometry tied to the given engine.

Parameters:

engine - EvoLudo pacemaker

Method Details

parse

public boolean parse(String arg)

Description copied from class: AbstractGeometry

Parse geometry-specific CLI options.

Overrides:

parse in class AbstractGeometry

Parameters:

arg - the argument string without the geometry key

Returns:

true if parsing succeeded, false if invalid

init

public void init()

Generates a connected undirected scale-free network by sampling degrees from a power-law distribution and then constructing a matching graph.

Specified by:

init in class AbstractGeometry

sampleDegree

private int sampleDegree(RNGDistribution rng,
 double[] distr)

Sample a degree from the given distribution.

Parameters:

rng - random number generator

distr - cumulative distribution of degrees

Returns:

the sampled degree

swap

private static void swap(int[] array,
 int a,
 int b)

Swap two entries within an array.

Parameters:

array - array whose entries should be swapped

a - first index

b - second index

checkSettings

protected boolean checkSettings()

Description copied from class: AbstractGeometry

Hook for subclasses to implement geometry specific checks.

Overrides:

checkSettings in class AbstractGeometry

Returns:

true if adjustments require a reset

clone

public ScalefreeGeometry clone()

Description copied from class: AbstractGeometry

Clone geometry.

Requirements/notes:

1. Overrides clone() in Object but conflicts with GWT's aversion to clone()ing...
2. Remove @SuppressWarnings("all") to ensure that no other issues crept in when modifying method.

Overrides:

clone in class AbstractGeometry

Returns:

clone of geometry

hashCode

public int hashCode()

Overrides:

hashCode in class AbstractGeometry

equals

public boolean equals(Object obj)

Overrides:

equals in class AbstractGeometry