Package cc.mallet.types

Class MultiInstanceList

java.lang.Object

java.util.AbstractCollection<E>

java.util.AbstractList<E>

java.util.ArrayList<Instance>

cc.mallet.types.InstanceList

cc.mallet.types.MultiInstanceList

All Implemented Interfaces:

AlphabetCarrying, java.io.Serializable, java.lang.Cloneable, java.lang.Iterable<Instance>, java.util.Collection<Instance>, java.util.List<Instance>, java.util.RandomAccess

public class MultiInstanceList
extends InstanceList

An implementation of InstanceList that logically combines multiple instance lists so that they appear as one list without copying the original lists. This is useful when running cross-validation experiments with large data sets. Any operation that would modify the size of the list is not supported.

Author:

Michael Bond mbond@gmail.com

See Also:

InstanceList, Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class cc.mallet.types.InstanceList

InstanceList.CrossValidationIterator, InstanceList.StratifiedCrossValidationIterator

Field Summary

Fields inherited from class cc.mallet.types.InstanceList

TARGET_PROPERTY

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Constructors

Constructor	Description
MultiInstanceList(InstanceList[] lists)	Constructs a MultiInstanceList with an array of InstanceList
MultiInstanceList(java.util.List<InstanceList> lists)	Constructs a MultiInstanceList with a List of InstanceList

Method Summary

Modifier and Type	Method	Description
void	add(int index, Instance element)
boolean	add(Instance instance)	Appends the instance to this list without passing the instance through the InstanceList's pipe.
boolean	add(Instance instance, double instanceWeight)	Appends the instance to this list without passing it through this InstanceList's pipe, assigning it the specified weight.
void	clear()
java.lang.Object	clone()
InstanceList	cloneEmpty()
protected InstanceList	cloneEmptyInto(InstanceList ret)
boolean	contains(java.lang.Object elem)
InstanceList.CrossValidationIterator	crossValidationIterator(int nfolds)
InstanceList.CrossValidationIterator	crossValidationIterator(int nfolds, int seed)
void	ensureCapacity(int minCapacity)
boolean	equals(java.lang.Object o)
Instance	get(int index)
int	hashCode()
int	indexOf(java.lang.Object elem)
boolean	isEmpty()
java.util.Iterator<Instance>	iterator()
int	lastIndexOf(java.lang.Object elem)
java.util.ListIterator<Instance>	listIterator()
java.util.ListIterator<Instance>	listIterator(int index)
Instance	remove(int index)
boolean	remove(Instance instance)
boolean	remove(java.lang.Object o)
Instance	set(int index, Instance instance)
void	setInstance(int index, Instance instance)	Replaces the Instance at position index with a new one.
void	setInstanceWeight(Instance instance, double weight)
InstanceList	shallowClone()
void	shuffle(java.util.Random r)
int	size()
InstanceList[]	split(double[] proportions)
InstanceList[]	split(java.util.Random r, double[] proportions)	Shuffles the elements of this list among several smaller lists.
InstanceList[]	splitInOrder(double[] proportions)	Chops this list into several sequential sublists.
InstanceList[]	splitInOrder(int[] counts)
InstanceList[]	splitInTwoByModulo(int m)	Returns a pair of new lists such that the first list in the pair contains every mth element of this list, starting with the first.
InstanceList	subList(double proportion)
InstanceList	subList(int start, int end)
java.lang.Object[]	toArray()
<T> T[]	toArray(T[] a)
java.lang.String	toString()
void	trimToSize()

Methods inherited from class cc.mallet.types.InstanceList

add, add, addAll, addAll, addThruPipe, addThruPipe, getAlphabet, getAlphabets, getDataAlphabet, getDataClass, getFeatureSelection, getInstanceWeight, getInstanceWeight, getPerLabelFeatureSelection, getPipe, getTargetAlphabet, getTargetClass, hideSomeLabels, hideSomeLabels, load, removeSources, removeTargets, sampleWithInstanceWeights, sampleWithReplacement, sampleWithWeights, save, setFeatureSelection, setInstanceWeight, setPerLabelFeatureSelection, setPipe, stratifiedSplit, stratifiedSplitInOrder, targetLabelDistribution, unhideAllLabels

Methods inherited from class java.util.ArrayList

forEach, removeAll, removeIf, removeRange, replaceAll, retainAll, sort, spliterator

Methods inherited from class java.util.AbstractCollection

containsAll

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Collection

parallelStream, stream, toArray

Methods inherited from interface java.lang.Iterable

forEach

Methods inherited from interface java.util.List

containsAll

Constructor Detail

MultiInstanceList

public MultiInstanceList(InstanceList[] lists)

Constructs a MultiInstanceList with an array of InstanceList

Parameters:

lists - Array of InstanceList to logically combine

MultiInstanceList

public MultiInstanceList(java.util.List<InstanceList> lists)

Constructs a MultiInstanceList with a List of InstanceList

Parameters:

lists - List of InstanceList to logically combine

Method Detail

add

public boolean add(Instance instance,
                   double instanceWeight)

Description copied from class: InstanceList

Appends the instance to this list without passing it through this InstanceList's pipe, assigning it the specified weight.

Overrides:

add in class InstanceList

Returns:

true

add

public boolean add(Instance instance)

Description copied from class: InstanceList

Appends the instance to this list without passing the instance through the InstanceList's pipe. The alphabets of this Instance must match the alphabets of this InstanceList.

Specified by:

add in interface java.util.Collection<Instance>

Specified by:

add in interface java.util.List<Instance>

Overrides:

add in class InstanceList

Returns:

true

add

public void add(int index,
                Instance element)

Specified by:

add in interface java.util.List<Instance>

Overrides:

add in class InstanceList

clear

public void clear()

Specified by:

clear in interface java.util.Collection<Instance>

Specified by:

clear in interface java.util.List<Instance>

Overrides:

clear in class InstanceList

clone

public java.lang.Object clone()

Overrides:

clone in class InstanceList

cloneEmpty

public InstanceList cloneEmpty()

Overrides:

cloneEmpty in class InstanceList

cloneEmptyInto

protected InstanceList cloneEmptyInto(InstanceList ret)

Overrides:

cloneEmptyInto in class InstanceList

contains

public boolean contains(java.lang.Object elem)

Specified by:

contains in interface java.util.Collection<Instance>

Specified by:

contains in interface java.util.List<Instance>

Overrides:

contains in class java.util.ArrayList<Instance>

crossValidationIterator

public InstanceList.CrossValidationIterator crossValidationIterator(int nfolds,
                                                                    int seed)

Overrides:

crossValidationIterator in class InstanceList

crossValidationIterator

public InstanceList.CrossValidationIterator crossValidationIterator(int nfolds)

Overrides:

crossValidationIterator in class InstanceList

ensureCapacity

public void ensureCapacity(int minCapacity)

Overrides:

ensureCapacity in class java.util.ArrayList<Instance>

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Collection<Instance>

Specified by:

equals in interface java.util.List<Instance>

Overrides:

equals in class java.util.ArrayList<Instance>

get

public Instance get(int index)

Specified by:

get in interface java.util.List<Instance>

Overrides:

get in class java.util.ArrayList<Instance>

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Collection<Instance>

Specified by:

hashCode in interface java.util.List<Instance>

Overrides:

hashCode in class java.util.ArrayList<Instance>

indexOf

public int indexOf(java.lang.Object elem)

Specified by:

indexOf in interface java.util.List<Instance>

Overrides:

indexOf in class java.util.ArrayList<Instance>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Collection<Instance>

Specified by:

isEmpty in interface java.util.List<Instance>

Overrides:

isEmpty in class java.util.ArrayList<Instance>

iterator

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

Specified by:

iterator in interface java.util.Collection<Instance>

Specified by:

iterator in interface java.lang.Iterable<Instance>

Specified by:

iterator in interface java.util.List<Instance>

Overrides:

iterator in class java.util.ArrayList<Instance>

lastIndexOf

public int lastIndexOf(java.lang.Object elem)

Specified by:

lastIndexOf in interface java.util.List<Instance>

Overrides:

lastIndexOf in class java.util.ArrayList<Instance>

listIterator

public java.util.ListIterator<Instance> listIterator()

Specified by:

listIterator in interface java.util.List<Instance>

Overrides:

listIterator in class java.util.ArrayList<Instance>

listIterator

public java.util.ListIterator<Instance> listIterator(int index)

Specified by:

listIterator in interface java.util.List<Instance>

Overrides:

listIterator in class java.util.ArrayList<Instance>

remove

public boolean remove(Instance instance)

Overrides:

remove in class InstanceList

remove

public Instance remove(int index)

Specified by:

remove in interface java.util.List<Instance>

Overrides:

remove in class InstanceList

remove

public boolean remove(java.lang.Object o)

Specified by:

remove in interface java.util.Collection<Instance>

Specified by:

remove in interface java.util.List<Instance>

Overrides:

remove in class java.util.ArrayList<Instance>

set

public Instance set(int index,
                    Instance instance)

Specified by:

set in interface java.util.List<Instance>

Overrides:

set in class InstanceList

setInstance

public void setInstance(int index,
                        Instance instance)

Description copied from class: InstanceList

Replaces the Instance at position index with a new one.

Overrides:

setInstance in class InstanceList

setInstanceWeight

public void setInstanceWeight(Instance instance,
                              double weight)

Overrides:

setInstanceWeight in class InstanceList

shallowClone

public InstanceList shallowClone()

Overrides:

shallowClone in class InstanceList

shuffle

public void shuffle(java.util.Random r)

Overrides:

shuffle in class InstanceList

size

public int size()

Specified by:

size in interface java.util.Collection<Instance>

Specified by:

size in interface java.util.List<Instance>

Overrides:

size in class java.util.ArrayList<Instance>

split

public InstanceList[] split(double[] proportions)

Overrides:

split in class InstanceList

split

public InstanceList[] split(java.util.Random r,
                            double[] proportions)

Description copied from class: InstanceList

Shuffles the elements of this list among several smaller lists.

Overrides:

split in class InstanceList

Parameters:

r - The source of randomness to use in shuffling.

proportions - A list of numbers (not necessarily summing to 1) which, when normalized, correspond to the proportion of elements in each returned sublist. This method (and all the split methods) do not transfer the Instance weights to the resulting InstanceLists.

Returns:

one InstanceList for each element of proportions

splitInOrder

public InstanceList[] splitInOrder(double[] proportions)

Description copied from class: InstanceList

Chops this list into several sequential sublists.

Overrides:

splitInOrder in class InstanceList

Parameters:

proportions - A list of numbers corresponding to the proportion of elements in each returned sublist. If not already normalized to sum to 1.0, it will be normalized here.

Returns:

one InstanceList for each element of proportions

splitInOrder

public InstanceList[] splitInOrder(int[] counts)

Overrides:

splitInOrder in class InstanceList

splitInTwoByModulo

public InstanceList[] splitInTwoByModulo(int m)

Description copied from class: InstanceList

Returns a pair of new lists such that the first list in the pair contains every mth element of this list, starting with the first. The second list contains all remaining elements.

Overrides:

splitInTwoByModulo in class InstanceList

subList

public InstanceList subList(double proportion)

Overrides:

subList in class InstanceList

subList

public InstanceList subList(int start,
                            int end)

Specified by:

subList in interface java.util.List<Instance>

Overrides:

subList in class InstanceList

toArray

public java.lang.Object[] toArray()

Specified by:

toArray in interface java.util.Collection<Instance>

Specified by:

toArray in interface java.util.List<Instance>

Overrides:

toArray in class java.util.ArrayList<Instance>

toArray

public <T> T[] toArray(T[] a)

Specified by:

toArray in interface java.util.Collection<Instance>

Specified by:

toArray in interface java.util.List<Instance>

Overrides:

toArray in class java.util.ArrayList<Instance>

toString

public java.lang.String toString()

Overrides:

toString in class java.util.AbstractCollection<Instance>

trimToSize

public void trimToSize()

Overrides:

trimToSize in class java.util.ArrayList<Instance>