Memetic Computing

, Volume 5, Issue 1, pp 3–18 | Cite as

A framework for finding robust optimal solutions over time

  • Yaochu Jin
  • Ke Tang
  • Xin Yu
  • Bernhard Sendhoff
  • Xin Yao
Regular research paper

Abstract

Dynamic optimization problems (DOPs) are those whose specifications change over time, resulting in changing optima. Most research on DOPs has so far concentrated on tracking the moving optima (TMO) as closely as possible. In practice, however, it will be very costly, if not impossible to keep changing the design when the environment changes. To address DOPs more practically, we recently introduced a conceptually new problem formulation, which is referred to as robust optimization over time (ROOT). Based on ROOT, an optimization algorithm aims to find an acceptable (optimal or sub-optimal) solution that changes slowly over time, rather than the moving global optimum. In this paper, we propose a generic framework for solving DOPs using the ROOT concept, which searches for optimal solutions that are robust over time by means of local fitness approximation and prediction. Empirical investigations comparing a few representative TMO approaches with an instantiation of the proposed framework are conducted on a number of test problems to demonstrate the advantage of the proposed framework in the ROOT context.

Keywords

Robust optimisation over time (Root) Dynamic optimisation Evolutionary algorithms Particle swarm optimisation Fitness approximation 

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Yaochu Jin
    • 1
    • 2
  • Ke Tang
    • 1
  • Xin Yu
    • 1
  • Bernhard Sendhoff
    • 3
  • Xin Yao
    • 1
    • 4
  1. 1.Nature Inspired Computation and Applications Laboratory (NICAL), School of Computer Science and TechnologyUniversity of Science and Technology of ChinaHefeiChina
  2. 2.Department of ComputingUniversity of SurreySurreyUK
  3. 3.Honda Research Institute EuropeOffenbachGermany
  4. 4.Centre of Excellence for Research in Computational Intelligence and Applications (CERCIA), School of Computer ScienceUniversity of BirminghamBirminghamUK

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