org.debellor.base
Class Distortion

java.lang.Object
  org.debellor.core.Cell
      org.debellor.base.Distortion

public class Distortion
extends Cell

Introduces random distortions to numeric features of samples. Each numeric feature of the data vector is disturbed independently by adding random noise drawn from uniform distribution on the interval [-R,R], where R is the value of the parameter "range" passed to the cell. This parameter is obligatory and must have a positive real value.

Features other than numeric are left untouched, as well as the decision associated with the sample.

Author:

Marcin Wojnarski

Nested Class Summary

Nested classes/interfaces inherited from class org.debellor.core.Cell

Cell.CellMethod, Cell.State, Cell.Stream

Field Summary

Fields inherited from class org.debellor.core.Cell

parameters, random

Constructor Summary

Distortion()

Method Summary

protected void	onClose() Called by Cell.Stream.close().
protected Sample	onNext() Called by Cell.Stream.next().
protected Sample.SampleType	onOpen() Called by Cell.open().

Methods inherited from class org.debellor.core.Cell

close, erase, getAvailableParams, getParameters, learn, newThread, newThread, next, onErase, onLearn, open, openInputStream, set, set, set, set, setAvailableParams, setParameters, setRandomSeed, setSource, state, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

Distortion

public Distortion()

Method Detail

onOpen

protected Sample.SampleType onOpen()
                            throws java.lang.Exception

Description copied from class: Cell

Called by Cell.open(). Performs the actual opening of communication session, while open checks only against access violation and handles exceptions. Must be overridden in subclasses if open is to be used. Overriders may assume that the cell is in Cell.State.CLOSED state.

Overrides:

onOpen in class Cell

Throws:

java.lang.Exception

onNext

protected Sample onNext()
                 throws java.lang.Exception

Description copied from class: Cell

Called by Cell.Stream.next(). Performs the actual generation of the next output sample, while Stream.next() checks only against access violation and handles exceptions. Must be overridden in the subclass if next is to be used, i.e. if the subclass should generate some output data. Overriders may assume that the cell is in Cell.State.OPEN state.

Overrides:

onNext in class Cell

Throws:

java.lang.Exception

onClose

protected void onClose()
                throws java.lang.Exception

Description copied from class: Cell

Called by Cell.Stream.close(). Performs the actual closing of communication session, while close checks only against access violation and handles exceptions. Must be overridden in subclasses if close is to be used. Usually the overrider will use onClose to release resources, to let them be garbage-collected. Overriders may assume that the cell is in Cell.State.OPEN state.

Overrides:

onClose in class Cell

Throws:

java.lang.Exception