mark.nlp.data
Class SparseBag

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

All Implemented Interfaces:

Bag

public class SparseBag

extends java.lang.Object

implements Bag

A bag implemented with a sparse array. Appropriate when the possible elements of the bag are known ahead of time and the set of elements is sparse.

Constructor Summary

SparseBag(Bag contents, ObjectMap vocabulary)

Method Summary

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

Constructor Detail

SparseBag

public SparseBag(Bag contents,
                 ObjectMap vocabulary)

Method Detail

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.