Subtree semantic geometric crossover for genetic programming

Created by W.Langdon from gp-bibliography.bib Revision:1.4524

  author =       "Quang Uy Nguyen and Tuan Anh Pham and 
                 Xuan Hoai Nguyen and James McDermott",
  title =        "Subtree semantic geometric crossover for genetic
  journal =      "Genetic Programming and Evolvable Machines",
  year =         "2016",
  volume =       "17",
  number =       "1",
  pages =        "25--53",
  month =        mar,
  keywords =     "genetic algorithms, genetic programming, Semantics,
                 Geometric crossover, Symbolic regression",
  ISSN =         "1389-2576",
  DOI =          "doi:10.1007/s10710-015-9253-5",
  size =         "29 pages",
  abstract =     "The semantic geometric crossover (SGX) proposed by
                 Moraglio et al. has achieved very promising results and
                 received great attention from researchers, but has a
                 significant disadvantage in the exponential growth in
                 size of the solutions. We propose a crossover operator
                 named subtree semantic geometric crossover (SSGX), with
                 the aim of addressing this issue. It is similar to SGX
                 but uses subtree semantic similarity to approximate the
                 geometric property. We compare SSGX to standard
                 crossover (SC), to SGX, and to other recent
                 semantic-based crossover operators, testing on several
                 symbolic regression problems. Overall our new operator
                 out-performs the other operators on test data
                 performance, and reduces computational time relative to
                 most of them. Further analysis shows that while SGX is
                 rather exploitative, and SC rather explorative, SSGX
                 achieves a balance between the two. A simple method of
                 further enhancing SSGX performance is also

Genetic Programming entries for Quang Uy Nguyen Pham Tuan Anh Nguyen Xuan Hoai James McDermott