A Service Oriented Architecture for EAs: applications and first results

A Service Oriented Architecture for EAs:

applications and first resultsPablo García-SánchezUniversity of Granada

domingo 7 de julio de 2013

Agenda

• Who am I and what am I doing?

• A Service Oriented Architecture? What for?

• First results

• I want IDEAS!


Who am I?

• Wear glasses

• I like Doctor Who

• Adaptable to many technologies: OSGi, SOA, web development mobile development

• But not so good in math :(


SOA-EA

OSGiLiath

EA adaptation

Real world problem

Thesis!


What is SOA?


How must be the services?

• Input/output functions

• Stateless

• Order (and existence) not defined

• Services must be described as abstract as possible


How must be the services for EAS?

• Accomplish the genericity of Gagné and Parizeau (2006) (Hi!): abstract, encapsulated, reusable and well-defined

• Extend them with:

• Language independence

• Order independence

• Machine independence


Examples

• Fitness is not a method, but a service which receives a list of individuals

• Concepts such as Population are services

• Calculate fitness in each modification

• Separate concepts: Recombination vs. Crossover


Example of Service Oriented Algorithm



OSGiLiath

• OSGi Laboratory for implementation and testing of heuristics

• Based in cool (but independent!) technologies: OSGi, ECF, WSDL, XML, Declarative Services...

• Available in http://www.osgiliath.org


http://www.osgiliath.org

http://www.osgiliath.org

Adapting the island sizes to heterogeneous machines

• Benchmark to obtain computer performance

• Adapting size decreases time in two different computational problems: MMDP and OneMax

• Same sizes in homogeneous clusters does not imply an increase in performance


Bonus! Evolutionary Art

• Drawing service with Processing

• Images with the same histogram than a predefined image

• Using HSV histogram produces better results (less noisy than RGB)


Future work (this is the most important part!)

• GRID and Cloud experiments

• Online adaptation

• Nodes entering and exiting during runtime

• Intelligent service aggregation


References

• P. García-Sánchez, J. González, M. G. Arenas, P. A. Castillo and J.J. Merelo: Service Oriented Evolutionary Algorithms. Soft Computing, 2013.

• Developing Services in a Service Oriented Architecture for EAs. (previous session of EvoSoft)


Thanks!domingo 7 de julio de 2013

Technology

A Service Oriented Architecture for EAs: applications and first results