\ɪvəlˈuːʃənəɹi pɹˈə͡ʊɡɹamɪŋ], \ɪvəlˈuːʃənəɹi pɹˈəʊɡɹamɪŋ], \ɪ_v_ə_l_ˈuː_ʃ_ə_n_ə_ɹ_i p_ɹ_ˈəʊ_ɡ_ɹ_a_m_ɪ_ŋ]\
Definitions of EVOLUTIONARY PROGRAMMING
Sort: Oldest first
(EP) A stochastic optimisation strategy originally conceivedby Lawrence J. Fogel in 1960.An initially random population of individuals (trialsolutions) is created. Mutations are then applied to eachindividual to create new individuals. Mutations vary in theseverity of their effect on the behaviour of the individual.The new individuals are then compared in a "tournament" toselect which should survive to form the new population.EP is similar to a genetic algorithm, but models only thebehavioural linkage between parents and their offspring, ratherthan seeking to emulate specific genetic operators from naturesuch as the encoding of behaviour in a genome andrecombination by genetic crossover.EP is also similar to an evolution strategy (ES) althoughthe two approaches developed independently. In EP, selectionis by comparison with a randomly chosen set of otherindividuals whereas ES typically uses deterministicselection in which the worst individuals are purged from thepopulation.
By Denis Howe
Word of the day
- A relatively rare smooth muscle tumor found most frequently in the wall gastrointestinal tract, especially stomach. It similar to other tumors but may become very large and hemorrhage exhibit small cystic areas. Simple excision is almost always curative. (From Dorland, 27th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1354)