mark.nlp.data
Class HashBag

java.lang.Object
  |
  +--mark.nlp.data.HashBag

All Implemented Interfaces:

Bag

public class HashBag

extends java.lang.Object

implements Bag

A Bag implemented with a hash. Appropriate when one does not know the possible elements of the bag ahead of time (or the number of possibilities is prohibitively large compared to what will actually happen).

Field Summary

protected java.util.HashMap	fCounts
protected int	fNum

Constructor Summary

HashBag()

Method Summary

void	inc(java.lang.Object o, double cnt)
java.util.Iterator	iterator() Returns an iterator over the object types.
double	num() Returns the number of object occurrences in the bag.
double	num(java.lang.Object o) Returns the number of object type o occurrences in the bag.
int	numTypes() Returns the number of object types with non-zero occurrences.

Methods inherited from class java.lang.Object

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

Field Detail

fCounts

protected java.util.HashMap fCounts

fNum

protected int fNum

Constructor Detail

HashBag

public HashBag()

Method Detail

inc

public void inc(java.lang.Object o,
                double cnt)

numTypes

public int numTypes()

Description copied from interface: Bag

Returns the number of object types with non-zero occurrences.

Specified by:

numTypes in interface Bag

Returns:

the number of object types with non-zero occurrences.

iterator

public java.util.Iterator iterator()

Description copied from interface: Bag

Returns an iterator over the object types.

Specified by:

iterator in interface Bag

Returns:

the iterator.

num

public double num(java.lang.Object o)

Description copied from interface: Bag

Returns the number of object type o occurrences in the bag.

Specified by:

num in interface Bag

Parameters:

o - the object.

Returns:

the number of o occurrences.

num

public double num()

Description copied from interface: Bag

Returns the number of object occurrences in the bag.

Specified by:

num in interface Bag

Returns:

the number of object occurrences.