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Gene expression programming with enhanced preservation of attributes contributing to fitness

  • US 20060200436A1
  • Filed: 03/07/2005
  • Published: 09/07/2006
  • Est. Priority Date: 03/07/2005
  • Status: Abandoned Application
First Claim
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1. A genetic algorithm based method of finding a mathematical expression for a technical problem, the method comprising:

  • generating an initial population of chromosomes wherein each chromosome encodes a mathematical expression and each chromosome includes operand genes and operator genes;

    recursively generating a series of generations of populations of chromosomes from the initial population;

    for each population of chromosomes;

    selecting an elite group of chromosomes based on fitness to solve the technical problem;

    identifying one or more groups of genes in each chromosome in the elite group;

    determining a ranking of the groups of genes identified in the elite group according to their frequency in the elite group;

    based on the ranking selectively retaining, as one or more derived genes, one or more of the groups of genes;

    for each of the one or more derived functions, replacing each particular group of genes by a ID identifying the particular group of genes;

    performing one or more evolutionary operations on the population of chromosomes to generate a new population of chromosomes; and

    outputting information on a high fitness chromosome.

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