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A Dynamic Access Planning Method for Information Mediator

  • Yasuhiko Kitamura
  • Tomoya Noda
  • Shoji Tatsumi
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1860)

Abstract

The Internet is spreading into our society rapidly and deeply and is becoming one of our social infrastructures. Especially, WWW technologies are widely used for doing business and research, creating communities, disseminating personal information, and so on. We usually access WWW pages one by one through a browser, but we can add more value to them by integrating information collected from various WWW sites. However, to realize such WWW information integration, we face obstacles such as distributed information sources, access cost, and frequently and asynchronous updates of information. We here adopt mediator, which integrates information from distributed information sources, with cache mechanism to reduce access cost. We also propose a dynamic access planning method to cope with frequently updating information sources. In a limited time period, it can construct an appropriate answer by accessing information sources effectively considering reliability and quality of cached data. We show its performance through a real-world flight information service comparing with a conventional access strategy.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • Yasuhiko Kitamura
    • 1
  • Tomoya Noda
    • 1
  • Shoji Tatsumi
    • 1
  1. 1.Department of Information and Communication Engineering, Faculty of EngineeringOsaka City UniversityOsakaJapan

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