org.apache.ignite.ml.dataset.feature

Class ObjectHistogram<T>

java.lang.Object

org.apache.ignite.ml.dataset.feature.ObjectHistogram<T>

Type Parameters:

T - Type of object for histogram.

All Implemented Interfaces:

Serializable, DistributionComputer, Histogram<T,ObjectHistogram<T>>

public class ObjectHistogram<T>
extends Object
implements Histogram<T,ObjectHistogram<T>>, DistributionComputer

Basic implementation of Histogram that implements also DistributionComputer.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ObjectHistogram(IgniteFunction<T,Integer> bucketMapping, IgniteFunction<T,Double> mappingToCntr) Create an instance of ObjectHistogram.

Method Summary

Modifier and Type	Method and Description
void	addElement(T val) Add object to histogram.
Set<Integer>	buckets()
TreeMap<Integer,Double>	computeDistributionFunction() Compute distribution function.
Optional<Double>	getValue(Integer bucketId)
boolean	isEqualTo(ObjectHistogram<T> other) Compares histogram with other and returns true if they are equals
ObjectHistogram<T>	plus(ObjectHistogram<T> other)

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectHistogram

public ObjectHistogram(IgniteFunction<T,Integer> bucketMapping,
                       IgniteFunction<T,Double> mappingToCntr)

Create an instance of ObjectHistogram.

Parameters:

bucketMapping - Bucket mapping.

mappingToCntr - Mapping to counter.

Method Detail

addElement

public void addElement(T val)

Add object to histogram.

Specified by:

addElement in interface Histogram<T,ObjectHistogram<T>>

Parameters:

val - Value.

buckets

public Set<Integer> buckets()

Specified by:

buckets in interface Histogram<T,ObjectHistogram<T>>

Returns:

bucket ids.

getValue

public Optional<Double> getValue(Integer bucketId)

Specified by:

getValue in interface Histogram<T,ObjectHistogram<T>>

Parameters:

bucketId - Bucket id.

Returns:

value in according to bucket id.

computeDistributionFunction

public TreeMap<Integer,Double> computeDistributionFunction()

Compute distribution function.

Specified by:

computeDistributionFunction in interface DistributionComputer

Returns:

Map represents discrete distribution function.

plus

public ObjectHistogram<T> plus(ObjectHistogram<T> other)

Specified by:

plus in interface Histogram<T,ObjectHistogram<T>>

Parameters:

other - Other histogram.

Returns:

sum of this and other histogram.

isEqualTo

public boolean isEqualTo(ObjectHistogram<T> other)

Compares histogram with other and returns true if they are equals

Specified by:

isEqualTo in interface Histogram<T,ObjectHistogram<T>>

Parameters:

other - Other histogram.

Returns:

true if histograms are equal.