Many connected distributed servers, each of them dominates a specific region, can construct a virtual world. In this interactive virtual world, users can connect to one of the servers at any place to access the needed information. This paper proposes two external static search mechanisms to obtain the needed information without passing duplicated commands to all the servers in the virtual world. The search command is passed by agents of the servers, which locations are already set, to decide whether the command is already received or not. In this way, the proposed search mechanisms can achieve three goals. First, the searching results fit the user’s requirement. Second, the needed results provided by servers are bounded by specific conditions. Third, through the agents of servers to avoid passing duplicated command, the network bandwidth is reduced and also promoted the search performance.
淡江理工學刊=Journal of Applied Science and Engineering 10(4)，頁 379-388