Abstract
In this paper, an effective probability-based tile pre-fetching algorithm and a collaborative cache replacement algorithm for Web geographical information systems(Web GISs) are proposed. The proposed tile pre-fetching algorithm can approximate which tiles will be used in advance based on the global tile access pattern of all users and the semantics of query so that a user request will be answered quickly since the needed tiles are likely in cache database. When a client runs out of cache space for newly down-loaded tiles, the proposed cache replacement algorithm determines which tiles should be replaced based on the future access probabilities. By combining the proposed tile pre-fetching algorithm with the cache replacement algorithm, the response time for user requests can be improved substantially in Web GIS systems.
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© 2001 Springer-Verlag Berlin Heidelberg
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Kang, YK., Kim, KC., Kim, YS. (2001). Probability-Based Tile Pre-fetching and Cache Replacement Algorithms for Web Geographical Information Systems. In: Caplinskas, A., Eder, J. (eds) Advances in Databases and Information Systems. ADBIS 2001. Lecture Notes in Computer Science, vol 2151. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-44803-9_11
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DOI: https://doi.org/10.1007/3-540-44803-9_11
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