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Building block hypothesis (BBH)

attempt to explain the functioning of a (binary) GA based on the schema theorem. The BBH is based on the assumption that beneficial properties of a parent are aggregated in (relatively) small code blocks at several locations within the genome. In the offspring they can be merged by crossover. Thus, the BBH suggests that the improved solution is assembled from ``partial solutions,'' the so-called building blocks (see also genetic repair).

Hans-Georg Beyer 2002-02-25