In what circumstances might it be necessary to implement agent-based  models
of thousands or millions of agents, rather than the more typical tens or
hundreds?  Do you know of any examples where scaling up the model (in terms
of the number of agents) gives qualitatively different results?  Do you know
of any literature that addresses this issue?

Iąd be very interested to hear of any suggestions.

Thank you,


Professor Nigel Gilbert,  Editor, Journal of Artificial Societies and
     Social Simulation, <>
        Centre for Research on Social Simulation (CRESS)
   Department of Sociology, University of Surrey, Guildford, UK.
       Tel:+44 1483 689173   [log in to unmask]