The IMA Workshop on Evolutionary Algorithms brought together many researchers in the area of evolutionary computation for a week of interaction. The field of evolutionary computation has developed since the 1960s and in the late 1990s consists of a variety of subfields such as genetic algorithms, evolution strategies, evolutionary programming, and genetic programming, each with its own algorithmic perspectives and goals. The workshop did a great deal to clarify the state of the theory of evolutionary algorithms. The existing theory might be characterized as deriving from two principal...