org.deeplearning4j.models.sequencevectors.graph.walkers.impl

Class RandomWalker<T extends SequenceElement>

java.lang.Object

org.deeplearning4j.models.sequencevectors.graph.walkers.impl.RandomWalker<T>

All Implemented Interfaces:

GraphWalker<T>

Direct Known Subclasses:

PopularityWalker, WeightedWalker

public class RandomWalker<T extends SequenceElement>
extends java.lang.Object
implements GraphWalker<T>

This is Random-based walker for SequenceVectors-based DeepWalk implementation Original DeepWalk paper: http://arxiv.org/pdf/1403.6652v2

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	RandomWalker.Builder<T extends SequenceElement>

Field Summary

Fields

Modifier and Type	Field and Description
protected double	alpha
protected NoEdgeHandling	noEdgeHandling
protected int[]	order
protected java.util.concurrent.atomic.AtomicInteger	position
protected java.util.Random	rng
protected long	seed
protected IGraph<T,?>	sourceGraph
protected WalkDirection	walkDirection
protected int	walkLength

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	RandomWalker()

Method Summary

Modifier and Type	Method and Description
boolean	hasNext() This method checks, if walker has any more sequences left in queue
boolean	isLabelEnabled()
Sequence<T>	next() This method returns next walk sequence from this graph
void	reset(boolean shuffle) This method resets walker

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.deeplearning4j.models.sequencevectors.graph.walkers.GraphWalker

getSourceGraph

Field Detail

walkLength

protected int walkLength

noEdgeHandling

protected NoEdgeHandling noEdgeHandling

sourceGraph

protected IGraph<T extends SequenceElement,?> sourceGraph

position

protected java.util.concurrent.atomic.AtomicInteger position

rng

protected java.util.Random rng

seed

protected long seed

order

protected int[] order

walkDirection

protected WalkDirection walkDirection

alpha

protected double alpha

Constructor Detail

RandomWalker

protected RandomWalker()

Method Detail

hasNext

public boolean hasNext()

This method checks, if walker has any more sequences left in queue

Specified by:

hasNext in interface GraphWalker<T extends SequenceElement>

Returns:

isLabelEnabled

public boolean isLabelEnabled()

Specified by:

isLabelEnabled in interface GraphWalker<T extends SequenceElement>

next

public Sequence<T> next()

This method returns next walk sequence from this graph

Specified by:

next in interface GraphWalker<T extends SequenceElement>

Returns:

reset

public void reset(boolean shuffle)

This method resets walker

Specified by:

reset in interface GraphWalker<T extends SequenceElement>

Parameters:

shuffle - if TRUE, order of walks will be shuffled