Binary interaction algorithms for the simulation of flocking and swarming dynamics

G. Albi, L. Pareschi

Research output: Contribution to journalArticlepeer-review

63 Scopus citations


Microscopic models of flocking and swarming take into account large numbers of interacting individuals. Numerical resolution of large flocks implies huge computational costs. Typically for N interacting individuals we have a cost of O(N2). We tackle the problem numerically by considering approximated binary interaction dynamics described by kinetic equations and simulating such equations by suitable stochastic methods. This approach permits us to compute approximate solutions as functions of a small scaling parameter e at a reduced complexity of O(N) operations. Several numerical results show the efficiency of the algorithms proposed.

Original languageEnglish
Pages (from-to)1-29
Number of pages29
JournalMultiscale Modeling and Simulation
Issue number1
StatePublished - 2013
Externally publishedYes


  • Collective behavior
  • Flocking
  • Kinetic models
  • Mean-field models
  • Monte carlo methods
  • Swarming


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