Abstract: In this paper, we present a stepwise genetic programming algorithm to perform regression on a large number of noisy data, the purpose of which is to find a mathematical model for samples. To obtain an accurate statistical model of noisy sample points, discrete cosine transform was inserted into a standard GP algorithm. The energy-compaction property of DCT makes it very suitable for accelerating the implement of the standard GP algorithm and dealing with the noisy data samples. We tested the proposed algorithm with benchmark instances and compared it with several popular other algorithms. The experimental results have shown that the proposed algorithm is a powerful tool in finding optimal solutions.

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Code Reuse in Gene Expression Programming

Authors: Qu Li, Min Yao, Wei Hong Wang, Yan Ye Du

Abstract: Gene expression programming (GEP) is a kind of phenotype/genotype based evolutionary computation. Code reuse is an important issue in GEP. Various methods are used in current literature to achieve this task. In this paper, we compared six GEP based algorithms by experiments. We proved that although it’s possible invent different kinds of code reuse strategies, current available strategies are powerful and efficient.