Archive for the ‘swarming’ Category

The problem with web 2.0 crowds: imitative!

Wednesday, February 4th, 2009

I attended a talk by David Sumpter on “How animal groups make decisions” (hosted by Max Reuter). David is a mathematician working on self-organisation and decision-making based on simple rules. His team looked at behavioral rules that explain, for example, how birds fly together.

My take-away from his talk: Group decision-making may be better than individual decision-making ONLY if each member of the group takes decision indepedently. Indeed, idependence is one of the four elements to form a wise crowd. Alas, I think that social prejudices make it impossible to reach independent decisions in our society. Does this suggest the end of the wisdom of crowds?

Few scribble notes:

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New swarming algorithm only tracks 7 neighbours

Thursday, January 31st, 2008

A new study of starling flocks has revealed that each bird only needs to track its nearest six or seven neighbours, regardless of their physical distance, to keep the flock cohesive. Previous models such as boids were based on each bird tracking every other bird within a certain range.