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Linking Micro-to Macro-level Behavior in the AggressorDefenderStalker Game
 

Summary: 175
Linking Micro- to Macro-level Behavior in the
Aggressor­Defender­Stalker Game
Carl Anderson
School of Industrial and Systems Engineering, Georgia Institute of Technology and Icosystem
Corporation
In many multiagent systems, small changes in individual-level rules may lead to very large changes at
the group-level. This phenomenon is striking in the "aggressor-defender game," a simple participative
game in which each participant randomly selects two others from the group (A and B). In the aggres-
sor game, everyone tries to position themselves so that A is always between themselves and B. In the
defender game everyone tries to position themselves between A and B. Despite these exceedingly
simple rules and the seemingly small difference between them, the two games exhibit very different
dynamics. The aggressor game produces a highly dynamic group that rapidly expands over time
whereas the defender game quickly collapses to a tight knot. I analyze these games and provide
some insight as to how these two group level behaviors arise, thereby linking the micro- and macro-
levels. I also introduce and analyze a new, related and simpler game, the stalker game, in which each
participant selects and pursues a single participant, and which also produces a collapsing group. It is
suggested that such a geometrical analysis may be applicable for other multiagent systems such as
insect societies and collective robotics.
Keywords swarming ˇ self-organization ˇ participative game ˇ aggressor ˇ defender ˇ stalker

  

Source: Anderson, Carl - Synthetic Intelligence, Qbit, LLC, Bethesda, MD

 

Collections: Environmental Sciences and Ecology; Engineering; Mathematics