Magnetotelluric inversion using problem-specific genetic operators

摘要

An evolutionary computation approach is described for a classical geophysics inverse problem, namely, megnetotelluric inversion. The problem's nature and features are briefly described, as well as the procedure used to approach it, based upon the development of three problem specific operators: local search, homogenisation and spatial crossover. The latter is presented in detail and relevant data comparing its performance with uniform crossover are provided. Comparison is then made between the solution obtained with evolutionary computation and another, a classical approach, more akin to the inverse problems field. Conclusions are drawn for the necessity of using ad-hoc operators in this problem, and establishes the balance between the two approaches: evolutionary computation generates better results while consuming more computing resources.