edu.stanford.nlp.parser.lexparser

Class BinaryRule

java.lang.Object

edu.stanford.nlp.parser.lexparser.BinaryRule

All Implemented Interfaces:

Rule, java.io.Serializable, java.lang.Comparable<BinaryRule>

public class BinaryRule
extends java.lang.Object
implements Rule, java.lang.Comparable<BinaryRule>, java.io.Serializable

Binary rules (ints for parent, left and right children)

Author:

Dan Klein, Christopher Manning

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
int	leftChild
int	parent
int	rightChild
float	score Score should be a log probability

Constructor Summary

Constructors

Constructor and Description
BinaryRule(int parent, int leftChild, int rightChild) Create a new BinaryRule with the parent and children coded as ints.
BinaryRule(int parent, int leftChild, int rightChild, double score)
BinaryRule(java.lang.String s, Index<java.lang.String> index) Creates a BinaryRule from String s, assuming it was created using toString().

Method Summary

Modifier and Type	Method and Description
int	compareTo(BinaryRule br)
boolean	equals(java.lang.Object o)
int	hashCode()
int	parent()
float	score()
java.lang.String	toString()
java.lang.String	toString(Index<java.lang.String> index)
java.lang.String	toStringNoScore(Index<java.lang.String> index)

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

parent

public int parent

score

public float score

Score should be a log probability

leftChild

public int leftChild

rightChild

public int rightChild

Constructor Detail

BinaryRule

public BinaryRule(int parent,
                  int leftChild,
                  int rightChild)

Create a new BinaryRule with the parent and children coded as ints. Score defaults to Float.NaN.

Parameters:

parent - The parent int

leftChild - The left child int

rightChild - The right child int

BinaryRule

public BinaryRule(int parent,
                  int leftChild,
                  int rightChild,
                  double score)

BinaryRule

public BinaryRule(java.lang.String s,
                  Index<java.lang.String> index)

Creates a BinaryRule from String s, assuming it was created using toString().

Parameters:

s - A String in which the binary rule is represented as parent, left-child, right-child, score, with the items quoted as needed

index - Index used to convert String names to ints

Method Detail

score

public float score()

Specified by:

score in interface Rule

parent

public int parent()

Specified by:

parent in interface Rule

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

toString

public java.lang.String toString(Index<java.lang.String> index)

toStringNoScore

public java.lang.String toStringNoScore(Index<java.lang.String> index)

compareTo

public int compareTo(BinaryRule br)

Specified by:

compareTo in interface java.lang.Comparable<BinaryRule>