edu.ucla.sspace.wordsi

Class SelPrefDependencyContextGenerator

java.lang.Object

edu.ucla.sspace.wordsi.SelPrefDependencyContextGenerator

All Implemented Interfaces:

DependencyContextGenerator

public class SelPrefDependencyContextGenerator
extends Object
implements DependencyContextGenerator

A DependencyContextGenerator that marks each co-occurrence with ordering information.

Author:

Keith Stevens

Field Summary

Fields

Modifier and Type	Field and Description
static String	EMPTY_STRING

Constructor Summary

Constructors

Constructor and Description
SelPrefDependencyContextGenerator(StructuredVectorSpace svs) Constructs a new SelPrefDependencyContextGenerator.

Method Summary

Methods

Modifier and Type	Method and Description
SparseDoubleVector	generateContext(DependencyTreeNode[] tree, int focusIndex) Returns a SparseDoubleVector that represents the context composed of the set of prevWords before the focus word and the set of nextWords after the focus word.
int	getVectorLength() Returns the maximum number of dimensions used to represent any given context.
void	setReadOnly(boolean readOnly) A No-op

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY_STRING

public static final String EMPTY_STRING

See Also:

Constant Field Values

Constructor Detail

SelPrefDependencyContextGenerator

public SelPrefDependencyContextGenerator(StructuredVectorSpace svs)

Constructs a new SelPrefDependencyContextGenerator.

Method Detail

generateContext

public SparseDoubleVector generateContext(DependencyTreeNode[] tree,
                                 int focusIndex)

Returns a SparseDoubleVector that represents the context composed of the set of prevWords before the focus word and the set of nextWords after the focus word. Since sparse vectors are returned, if a second order vector is generated, it is recommended that the vector also be sparsed or have very few dimensions.

Specified by:

generateContext in interface DependencyContextGenerator

setReadOnly

public void setReadOnly(boolean readOnly)

A No-op

Specified by:

setReadOnly in interface DependencyContextGenerator

getVectorLength

public int getVectorLength()

Returns the maximum number of dimensions used to represent any given context.

Specified by:

getVectorLength in interface DependencyContextGenerator