@InCollection{parunak07a,
  author =	 {H. Van Dyke Parunak and Sven Brueckner},
  title =	 {Concurrent Modeling of Alternative Worlds with
                  Polyagents},
  booktitle =	 { Multi-Agent-Based Simulation {VII}},
  pages =	 {128--141},
  publisher =	 {Springer},
  year =	 2007,
  abstract =	 {Agent-based modeling is a powerful tool for systems
                  modeling. Instantiating each domain entity with an
                  agent captures many aspects of system dynamics and
                  interactions that other modeling techniques do
                  not. However, an entity’s agent can execute only one
                  trajectory per run, and does not sample the
                  alternative trajectories accessible to the entity in
                  the evolution of a realistic system. Averaging over
                  multiple runs does not capture the range of
                  individual interactions involved. We address these
                  problems with a new modeling entity, the polyagent,
                  which represents each entity with a single
                  persistent avatar supported by a swarm of transient
                  ghosts. Each ghost interacts with the ghosts of
                  other avatars through digital pheromone fields,
                  capturing a wide range of alternative trajectories
                  in a single run that can proceed faster than real
                  time.},
  doi = 	 {10.1007/978-3-540-76539-4_10},
  url = 	 {http://jmvidal.cse.sc.edu/library/parunak07a.pdf},
  cluster = 	 {18057317138957381634}
}