Fuzzy cognitive maps and cellular automata: An evolutionary approach for social systems modelling

  • Authors:

  • Vijay K. Mago;Laurens Bakker;Elpiniki I. Papageorgiou;Azadeh Alimadad;Peter Borwein;Vahid Dabbaghian

  • Affiliations:

  • MoCSSy Program, The IRMACS Centre, Simon Fraser University, Burnaby V5A 1S6, Canada;MoCSSy Program, The IRMACS Centre, Simon Fraser University, Burnaby V5A 1S6, Canada;Department of Informatics and Computer Technology, Technological Educational Institute of Lamia, Lamia, Greece;MoCSSy Program, The IRMACS Centre, Simon Fraser University, Burnaby V5A 1S6, Canada and Faculty of Health Sciences, Simon Fraser University, Burnaby V5A 1S6, Canada;MoCSSy Program, The IRMACS Centre, Simon Fraser University, Burnaby V5A 1S6, Canada;MoCSSy Program, The IRMACS Centre, Simon Fraser University, Burnaby V5A 1S6, Canada

  • Venue:
  • Applied Soft Computing
  • Year:
  • 2012

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Abstract

One of the first decisions to be made when modelling a phenomenon is that of scale: at which level is the phenomenon most appropriately modelled? For some phenomena the answer may seem too obvious to warrant even asking the question, but other phenomena cover the gamut, from high to low levels of abstraction. This paper explores how two modelling approaches that are 'at home' at opposite ends of the abstraction spectrum can be combined to yield an evolutionary modelling approach that is especially apt for phenomena that cover a wide range in this spectrum. We employ fuzzy cognitive maps (FCMs) to model the interplay between high-level concepts, and cellular automata (CA) to model the low-level interactions between individual actors. The combination of these models carries both beyond their respective limitations: the FCM concept is extended beyond the derivation of equilibrium outcomes from static initial conditions, to time-evolving systems where conditions may vary; CA are extended beyond the emergence of patterns from local interactions, to systems where global patterns have local repercussions. The applicability of the methodology is demonstrated by modelling the spread of human immunodeficiency virus (HIV) in an environment in which injection drug users share paraphernalia.