Titlebook: Advanced Signature Indexing for Multimedia and Web Applications; Yannis Manolopoulos,Alexandros Nanopoulos,Eleni To Book 2003 Springer Sci

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Pumpen und Flüssigkeitsförderungduced large databases about Web-site users. The stored information is usually in the form of transactions that represent, e.g., purchased products, sessions of visited pages, etc. The availability of such detailed data about users’ movements and choices, can be an invaluable source of information th

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Platz- und Explosionsmechanismenir size tends to grow very rapidly. Recent work has proposed the application of web-log mining methods[4, 7, 12, 15, 16, 17], which search for .. Some examples include methods based on clustering [20] and sequence mining [2].

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978-1-4613-4654-8Springer Science+Business Media New York 2003

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Advanced Signature Indexing for Multimedia and Web Applications978-1-4419-8636-8Series ISSN 1386-2944

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Klebeverbindungen und Klebstoffedered as important as the query response time. For large databases, a large fraction of the latter comprises the I/O overhead to fetch pages from the secondary storage. Therefore, in general, compression is able to improve query processing performance by reducing the I/O overhead [7].

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Platz- und Explosionsmechanismenir size tends to grow very rapidly. Recent work has proposed the application of web-log mining methods[4, 7, 12, 15, 16, 17], which search for .. Some examples include methods based on clustering [20] and sequence mining [2].

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Advances in Database Systemshttp://image.papertrans.cn/a/image/146209.jpg

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Zerkleinerungs- und SchneidegeräteThe first structure that has been used for signature data is the sequential file [3], which is efficient in handling new insertions, since new entries are simply appended to the end of the file. This way, for each query processed, the entire signature file needs to be scanned. Consequently, the signature file involves high processing and I/O cost.

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