Jui-Fa Chen This email address is being protected from spambots. You need JavaScript enabled to view it.1, Wei-Chuan Lin2 , Chih-Yu Jian1 and Heng-Yi Chiou1
1Department of Information Engineering, TamKang University, Tamsui, Taiwan 251, R.O.C. 2Department of Information Technology, Tak-Ming University of Science and Technology, Neihu, Taiwan 114, R.O.C.
Received: May 24, 2006 Accepted: June 8, 2007 Publication Date: December 1, 2007
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.
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