从学生群体发展集团工作代码示例（SDG）谷歌代码之夏2008。

The Swarm Development Group (SDG) was founded in September 1999 as a private, not-for-profit [501c(3)] organization to support the development of the Swarm Simulation System (Swarm) and the interests of the group members. The purposes of the SDG are to: advance the state-of-the-art in multi agent based simulation through the continued advancement of the Swarm Simulation System and support of the Swarm user community promote the free interchange of multi agent based simulations among computing specialists and the public develop and maintain the integrity and competence of individuals engaged in the practice of agent based simulation. Agent-based models (ABMs) are an exciting new approach for learning about and simulating complex systems, and its use is growing rapidly in science and business. As opposed to traditional modeling techniques that represent systems via differential equations for system state, ABMs represent systems as a colle