DISCUSSION OF ADVANTAGES


  1. Reduction of retrieval time: Generally, the submission of several queries is required to obtain the desired catalog data from millions of catalog data, since existing electronic catalog servers do not have interfaces that meet any retrieval request. Suppose that queries are realized by message exchanges. Then, for each query, a mass of catalog data is transmitted over the network, and the agents have to again retrieve the received catalog data to obtain the desired data. In the proposed system, mediation mobile agents migrate to each server and submit queries on the destination server. Since the agents filter retrieved data to obtain the desired results and bring them back to the departure server, only the desired catalog data are transmitted. Therefore, mobile agents are more effective than message exchanges for retrieving electronic catalog data. (Kawamura et al., 2001) show the quantitative comparison between message exchanges and mobile agents with respect to information retrieval.

  2. Flexible integration: Mediation mobile agents are unified and flexible processes, which realize integration procedures among existing electronic catalog servers. For example, agents can be designed to retrieve only classes of catalog data that specific servers require, or to select the next servers to be visited according to the data retrieved from the current visiting server. Agents can also be easily modified according to changes in integration procedures, which are due to the increase and decrease of electronic catalog servers and to changes in the retrieval orders of servers.

  3. Prompt realization of various retrieval requests : Agent wrappers provide common ACL conversation interfaces for accessing electronic catalog servers. By being wrapped, existing servers can exchange catalog data with each other, hiding their implementations. Even if the implementations of servers are partially changed, only processes in the agent wrappers corresponding to the implementation changes are modified. Thus, various demands on retrieving catalog data can be promptly realized.




(ed.) Intelligent Agents for Data Mining and Information Retrieval
(ed.) Intelligent Agents for Data Mining and Information Retrieval
ISBN: N/A
EAN: N/A
Year: 2004
Pages: 171

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