Definition from “Building Evolutionary Architectures, 2nd Edition”:
An architectural fitness function is any mechanism that provides an objective integrity assessment of some architectural characteristic(s).
From evolutionary computing (URL: https://en.wikipedia.org/wiki/Fitness_function):
A fitness function is a particular type of objective or cost function that is used to summarize, as a single figure of merit, how close a given candidate solution is to achieving the set aims
Note
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