edu.stanford.nlp.parser.lexparser
Class BinaryGrammar

java.lang.Object
  edu.stanford.nlp.parser.lexparser.BinaryGrammar

All Implemented Interfaces:

java.io.Serializable, java.lang.Iterable<BinaryRule>

public class BinaryGrammar
extends java.lang.Object
implements java.io.Serializable, java.lang.Iterable<BinaryRule>

Maintains efficient indexing of binary grammar rules.

Author:

Dan Klein, Christopher Manning (generified and optimized storage)

See Also:

Serialized Form

Constructor Summary

BinaryGrammar(Index<java.lang.String> stateIndex)

Method Summary

void	addRule(BinaryRule br)
boolean	isSynthetic(int state)
java.util.Iterator<BinaryRule>	iterator()
int	numRules()
void	readData(java.io.BufferedReader in) Populates data in this BinaryGrammar from the character stream given by the Reader r.
java.util.Iterator<BinaryRule>	ruleIteratorByLeftChild(int state)
java.util.Iterator<BinaryRule>	ruleIteratorByParent(int state)
java.util.Iterator<BinaryRule>	ruleIteratorByRightChild(int state)
java.util.List<BinaryRule>	ruleListByLeftChild(int state)
java.util.List<BinaryRule>	ruleListByParent(int state)
java.util.List<BinaryRule>	ruleListByRightChild(int state)
java.util.List<BinaryRule>	rules()
double	scoreRule(BinaryRule br)
void	splitRules() Populates the "splitRules" accessor lists using the existing rule lists.
BinaryRule[]	splitRulesWithLC(int state)
BinaryRule[]	splitRulesWithRC(int state)
void	writeData(java.io.Writer w) Writes out data from this Object to the Writer w.

Methods inherited from class java.lang.Object

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

Constructor Detail

BinaryGrammar

public BinaryGrammar(Index<java.lang.String> stateIndex)

Method Detail

numRules

public int numRules()

rules

public java.util.List<BinaryRule> rules()

isSynthetic

public boolean isSynthetic(int state)

splitRules

public void splitRules()

Populates the "splitRules" accessor lists using the existing rule lists. If the state is synthetic, these lists contain all rules for the state. If the state is NOT synthetic, these lists contain only the rules in which both children are not synthetic.

This method must be called before the grammar is used, either after training or deserializing grammar.

splitRulesWithLC

public BinaryRule[] splitRulesWithLC(int state)

splitRulesWithRC

public BinaryRule[] splitRulesWithRC(int state)

scoreRule

public double scoreRule(BinaryRule br)

addRule

public void addRule(BinaryRule br)

iterator

public java.util.Iterator<BinaryRule> iterator()

Specified by:

iterator in interface java.lang.Iterable<BinaryRule>

ruleIteratorByParent

public java.util.Iterator<BinaryRule> ruleIteratorByParent(int state)

ruleIteratorByRightChild

public java.util.Iterator<BinaryRule> ruleIteratorByRightChild(int state)

ruleIteratorByLeftChild

public java.util.Iterator<BinaryRule> ruleIteratorByLeftChild(int state)

ruleListByParent

public java.util.List<BinaryRule> ruleListByParent(int state)

ruleListByRightChild

public java.util.List<BinaryRule> ruleListByRightChild(int state)

ruleListByLeftChild

public java.util.List<BinaryRule> ruleListByLeftChild(int state)

readData

public void readData(java.io.BufferedReader in)
              throws java.io.IOException

Populates data in this BinaryGrammar from the character stream given by the Reader r.

Parameters:

in - Where input is read from

Throws:

java.io.IOException - If format is bung

writeData

public void writeData(java.io.Writer w)
               throws java.io.IOException

Writes out data from this Object to the Writer w.

Parameters:

w - Where output is written

Throws:

java.io.IOException - If data can't be written