Survey of cooperative algorithm in robocup middle size league

RoboCup is an international joint project to promote Artificial Intelligence (AI), robotics, and related fields since 1996. RoboCup project has been held every year, and the performance of robot shows great advance. Especially, Soccer Middle Size League (MSL) uses big robots and the biggest field in the RoboCup projects, and audience can enjoy powerful games. During the 13 years RoboCup project, a lot of teams have advanced various researches for solving problems of multi-agent system. Our survey presents an overview of the cooperative algorithms used in MSL. We summarize about various approaches of multi agent system of different teams, and discuss what will become possible in near future and which kind of approach will be effective. We hope this survey will become good information for many researchers in robotics, and expect a lot of new teams will participate to the RoboCup.