Boids Model

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The Boids are an agent-based model of coordinated animal motion such as bird flocks and fish schools created by Craig W. Reynolds in 1986. He called the generic simulated flocking creatures boids. The Rules are simple: stay away from your neighbors, but stay close to the group. Reynolds formulated three basic rules:

  • Separation: steer to avoid crowding local flockmates
  • Alignment: steer towards the average heading of local flockmates
  • Cohesion: steer to move toward the average position of local flockmates

It is a classic example of swarm intelligence, while the swarm is a fundamental emergent entity.


  • classic page about the Boids
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