Package ec.de

Differential Evolution Algorithms.

See:
Description

Class Summary

Best1BinDEBreeder	Best1BinDEBreeder implements the DE/best/1/bin Differential Evolution algorithm.
DEBreeder	DEBreeder provides a straightforward Differential Evolution (DE) breeder for the ECJ system.
DEStatistics	DEStatistics provides a straightforward solution to one problem many existing ECJ statistics classes have when used in conjunction with Differential Evolution (DE), namely reporting the fitness of individuals after they have been evaluated.
Rand1EitherOrDEBreeder	Rand1EitherOrDEBreeder implements the DE/rand/1/either-or Differential Evolution Algorithm, explored recently in the "Differential Evolution: A Practical Approach to Global Optimization" book by Kenneth Price, Rainer Storn, and Jouni Lampinen.
Rand1ExpDEBreeder	Rand1ExpDEBreeder implements the DE/rand/1/exp Differential Evolution Algorithm, explored recently in the "Differential Evolution: A Practical Approach to Global Optimization" book by Kenneth Price, Rainer Storn, and Jouni Lampinen.

Package ec.de Description

Differential Evolution Algorithms.

This package implements various algorithms from "Differential Evolution: A Practical Approach to Global Optimization" by Kenneth Price, Rainer Storn, and Jouni Lampinen. Much of the algorithms were taken, with permission from the Differential Evolution website.

ECJ's implementation of Differential Evolution requires that the user specify one of several Breeders, and also that the user include a special Statistics object in the Statistics chain. This Statistics object must be the *first* such object in the chain -- other Statistics objects must hang off of it.

The Breeder options implement various Differential Evolution Algorithms. Options include:

breed =         ec.de.DEBreeder
breed =         ec.de.Best1BinDEBreeder
breed =         ec.de.Rand1EitherOrDEBreeder
breed =         ec.de.Rand1ExpDEBreeder

The Statistics object is ec.de.DEStatistics. To use it in conjunction with ec.simple.SimpleStatistics, for example, we do:

stat =                      ec.de.DEStatistics
stat.num-children =         1
stat.child.0 =              ec.simple.SimpleStatistics
stat.child.0.file =         $out.stat

The conf/params/ec/app/ecsuite/de.params file contains an example.