edu.ucla.sspace.text

Class PatPho

java.lang.Object

edu.ucla.sspace.text.PatPho

public class PatPho
extends Object

An implementation of the PatPho phonological representation system. This implementation is based on the following paper.

• Li, Ping and MacWhinney, Brian. 2001. Proceedings of Behavior Research Methods, Instruments, \& Computers. 2002, Volme 34, Issue 3, 408-415.

This encoder is intended to transform phonemes into vectors for use in neural networks. This encoder will transform a phoneme into a vector of three real values. Given a list of phonemes, it will transform them into a syllbalic templated set of real values. Up to six phonemes may be passed to this encoder. This encoder is dependent on the IPA phonological representation scheme.

Author:

Keith Stevens

Constructor Summary

Constructors

Constructor and Description
PatPho() Creates a new PatPho instance with a six syllablic template.
PatPho(boolean useSixSyllables) Creates a new PatPho instance.

Method Summary

Methods

Modifier and Type	Method and Description
double[]	vectorize(List<String> phonemes) Returns a left-justified syllablilic template representation of the given list of phonemes.
double[]	vectorize(String phoneme) Returns a copy of the double representation of the given phoneme.

Methods inherited from class java.lang.Object

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

Constructor Detail

PatPho

public PatPho()

Creates a new PatPho instance with a six syllablic template.

PatPho

public PatPho(boolean useSixSyllables)

Creates a new PatPho instance. If useSixSyllables is true, a six syllablic template will be used, otherwise a three syllbalic template will be used.

Method Detail

vectorize

public double[] vectorize(String phoneme)

Returns a copy of the double representation of the given phoneme.

Parameters:

phoneme - A string representation of a phoneme using the IPA format

Returns:

The three double values representing the given phoneme

Throws:

NullPointerException - If the requested phoneme does not have a mapping

vectorize

public double[] vectorize(List<String> phonemes)

Returns a left-justified syllablilic template representation of the given list of phonemes. Every three values correspond to a single phoneme representation. If six syllables are used, a vector of 99 values is returned, otherwise a vector of 54 values is returned.

Parameters:

phonemes - A list of string phoneme representation using the IPA format

Returns:

A vector representing the word

Throws:

NullPointerException - If any requested phoneme does not have a mapping