Speeding up evolution through learning: LEM

Ryszard S. Michalski, Guido Cervone, Kenneth Kaufman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations


This paper reports briefly on the development of a new approach to evolutionary computation, called the Learnable Evolution Model or LEM. In contrast to conventional Darwinian-type evolutionary algorithms that employ mutation and/or recombination, LEM employs machine learning to generate new populations. At each step of evolution, LEM determines hypotheses explaining why certain individuals in the population are superior to others in performing the designated class of tasks. These hypotheses are then instantiated to create a next generation. In the testing studies described here, we compared a program implementing LEM with selected evolutionary computation algorithms on a range optimization problems and a filter design problem. In these studies, LEM significantly outperformed the evolutionary computation algorithms, sometimes speeding up the evolution by two or more orders of magnitude in the number of evolutionary steps (births). LEM was also applied to a real-world problem of designing optimized heat exchangers. The resulting designs matched or - outperformed the best human designs.

Original languageEnglish (US)
Title of host publicationIntelligent Information Systems -Proceedings of the IIS'2000 Symposium
Number of pages14
StatePublished - 2000
Event9th Intelligent Information Systems Symposium, IIS'2000 - Bystra, Poland
Duration: Jun 12 2000Jun 16 2000

Publication series

NameAdvances in Soft Computing
ISSN (Print)1615-3871
ISSN (Electronic)1860-0794


Other9th Intelligent Information Systems Symposium, IIS'2000

All Science Journal Classification (ASJC) codes

  • Computer Science (miscellaneous)
  • Computational Mechanics
  • Computer Science Applications


Dive into the research topics of 'Speeding up evolution through learning: LEM'. Together they form a unique fingerprint.

Cite this