aima.core.nlp.data.grammars

Class ProbCNFGrammarExamples

java.lang.Object

aima.core.nlp.data.grammars.ProbCNFGrammarExamples

public class ProbCNFGrammarExamples
extends java.lang.Object

A store of example Probabilistic Chomsky-Normal-Form grammars for testing and demonstrating CYK.

Author:

Jonathon

Constructor Summary

Constructors

Constructor and Description
ProbCNFGrammarExamples()

Method Summary

Modifier and Type	Method and Description
static ProbCNFGrammar	buildExampleGrammarOne() An elementary Chomsky-Normal-Form grammar for simple testing and demonstrating.
static ProbCNFGrammar	buildTrivialGrammar() A more restrictive phrase-structure grammar, used in testing and demonstrating the CYK Algorithm.

Methods inherited from class java.lang.Object

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

Constructor Detail

ProbCNFGrammarExamples

public ProbCNFGrammarExamples()

Method Detail

buildExampleGrammarOne

public static ProbCNFGrammar buildExampleGrammarOne()

An elementary Chomsky-Normal-Form grammar for simple testing and demonstrating. This type of grammar is seen more in Computing Theory classes, and does not mock a subset of English phrase-structure.

Returns:

buildTrivialGrammar

public static ProbCNFGrammar buildTrivialGrammar()

A more restrictive phrase-structure grammar, used in testing and demonstrating the CYK Algorithm. Note: It is complemented by the "trivial lexicon" in LexiconExamples.java

Returns: