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4 Extended Metaphors of Search

A metaphor of hill-climbing was used in Chapter 5 to characterise genetic programming search. Developing accurate models and metaphors of genetic programming will allow more intuitive improvement and analysis of results. The metaphor used here helped to understand these results as well as previous results. Further development and research along these lines may yield surprising and extremely useful models for the community. Specifically, one could build intermediate models between stochastic hill-climbers [O'Reilly and Oppacher, 1994,Juels and Wattenberg, 1995] and canonical genetic programming. These intermediate models would contain various properties of both methods and should help show more clearly why and how the two methods carry out search differently.

S Gustafson 2004-05-20