The edge recombination operator (ERO) is an operator that creates a path that is similar to a set of existing paths (parents) by looking at the edges rather than the vertices. The main application of this is for crossover in genetic algorithms when a genotype with non-repeating gene sequences is needed such as for the travelling salesman problem. It was described by Darrell Whitley and others in 1989.
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“We hear the Secretary of State boasting of his brinkmanship—the art of bringing us to the edge of the abyss.”
—Adlai Stevenson (1900–1965)