edu.ucla.sspace.dv

Class PathBasedBasisMapping

java.lang.Object

edu.ucla.sspace.dv.PathBasedBasisMapping

All Implemented Interfaces:

BasisMapping<DependencyPath,String>, DependencyPathBasisMapping

public class PathBasedBasisMapping
extends Object
implements DependencyPathBasisMapping

A BasisMapping implementation where each unique path consisting of words and relations corresponds to a unique dimension. For example "bowl" occuring with the "SBJ" relation will be treated as a seperate dimension than "bowl" with the "OBJ" relation and separate from "bowl" with the path "bowl-SBJ-filled-OBJ-punch".

Author:

David Jurgens

Constructor Summary

Constructors

Constructor and Description
PathBasedBasisMapping() Creates an empty PathBasedBasisMapping.

Method Summary

Methods

Modifier and Type	Method and Description
int	getDimension(DependencyPath path) Returns the dimension number corresponding to the term at the end of the provided path.
String	getDimensionDescription(int dimension) Returns the path mapped to the provided dimension.
boolean	isReadOnly() Returns true if the BasisMapping is read only, false otherwise.
Set<String>	keySet() Returns the set of keys known by this BasisMapping
int	numDimensions() Returns the number of dimensions currently represented in this basis mapping.
void	setReadOnly(boolean readOnly) Sets the read only state of the basis mapping.

Methods inherited from class java.lang.Object

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

Constructor Detail

PathBasedBasisMapping

public PathBasedBasisMapping()

Creates an empty PathBasedBasisMapping.

Method Detail

getDimension

public int getDimension(DependencyPath path)

Returns the dimension number corresponding to the term at the end of the provided path.

Specified by:

getDimension in interface BasisMapping<DependencyPath,String>

Parameters:

path - a path whose end represents a semantic connection

Returns:

the dimension for the occurrence of the last word in the path

getDimensionDescription

public String getDimensionDescription(int dimension)

Returns the path mapped to the provided dimension. Each path is a tab-delineated sequence of word and relations, e.g. "cat SBJ eats"

Specified by:

getDimensionDescription in interface BasisMapping<DependencyPath,String>

Parameters:

dimension - a dimension number

Returns:

a description of the dimension

numDimensions

public int numDimensions()

Returns the number of dimensions currently represented in this basis mapping.

Specified by:

numDimensions in interface BasisMapping<DependencyPath,String>

setReadOnly

public void setReadOnly(boolean readOnly)

Sets the read only state of the basis mapping. This is intended for when the basis mapping is needed to map to a known set of values, and any unknown values are left unmapped.

Specified by:

setReadOnly in interface BasisMapping<DependencyPath,String>

isReadOnly

public boolean isReadOnly()

Returns true if the BasisMapping is read only, false otherwise.

Specified by:

isReadOnly in interface BasisMapping<DependencyPath,String>

keySet

public Set<String> keySet()

Returns the set of keys known by this BasisMapping

Specified by:

keySet in interface BasisMapping<DependencyPath,String>