medusa.georgios.enhanced_mcl

Interface Dataset

All Superinterfaces:

java.util.Collection<Instance>, java.lang.Iterable<Instance>, java.util.List<Instance>

All Known Implementing Classes:

DefaultDataset, Fold

public interface Dataset
extends java.util.List<Instance>

Interface for a data set.

Method Summary

Modifier and Type	Method and Description
boolean	add(Instance i) Add an instance to this data set.
java.util.SortedSet<java.lang.Object>	classes() Returns a set containing all different classes in this data set.
int	classIndex(java.lang.Object clazz) Returns the index of the class value in the supplied data set.
java.lang.Object	classValue(int index)
Dataset[]	folds(int numFolds, java.util.Random rg) Create a number of folds from the data set and return them.
Instance	instance(int index) Get the instance with a certain index.
java.util.Set<Instance>	kNearest(int k, Instance inst) Returns the k closest instances.
int	noAttributes() The number of attributes in each instance.

Methods inherited from interface java.util.List

add, addAll, addAll, clear, contains, containsAll, equals, get, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, replaceAll, retainAll, set, size, sort, spliterator, subList, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Method Detail

kNearest

java.util.Set<Instance> kNearest(int k,
                                 Instance inst)

Returns the k closest instances.

Parameters:

k -

dm -

inst -

Returns:

classes

java.util.SortedSet<java.lang.Object> classes()

Returns a set containing all different classes in this data set. If no classes are available, this will return the empty set.

Returns:

add

boolean add(Instance i)

Add an instance to this data set. The compatibility of the new item with the items in the data set should be checked by the implementation. Incompatible items should not be added to the data set.

Specified by:

add in interface java.util.Collection<Instance>

Specified by:

add in interface java.util.List<Instance>

Parameters:

i - the instance to be added

Returns:

true if the instance was added, otherwise false

instance

Instance instance(int index)

Get the instance with a certain index.

Parameters:

index - the index of the instance you want to retrieve.

Returns:

folds

Dataset[] folds(int numFolds,
                java.util.Random rg)

Create a number of folds from the data set and return them. The supplied random generator is used to determine which instances are assigned to each of the folds.

Parameters:

numFolds - the number of folds to create

rg - the random generator

Returns:

an array of data sets that contains numFolds data sets.

noAttributes

int noAttributes()

The number of attributes in each instance. This value can be off when instances have different number of attributes. When the data set contains no instances, this method should return 0.

Returns:

classIndex

int classIndex(java.lang.Object clazz)

Returns the index of the class value in the supplied data set. This method will return -1 if the class value of this instance is not set.

Parameters:

data - the data set to give the index for

Returns:

the index of the class value

classValue

java.lang.Object classValue(int index)