Titlebook: Web Dynamics; Adapting to Change i Mark Levene,Alexandra Poulovassilis Book 2004 Springer-Verlag Berlin Heidelberg 2004 Access.Content.Exte

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Crawling the Webe this process by following hyperlinks in Web pages to automatically download new and updated Web pages. While some systems rely on crawlers that exhaustively crawl the Web, others incorporate “focus” within their crawlers to harvest application- or topic-specific collections. In this chapter we dis

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Search Engine Ability to Cope With the Changing Webthat is, new pages are added, others are moved and removed, while existing pages may undergo changes. The dynamic nature of Web pages should influence search engine results over time. a set of measures is introduced to evaluate search engine performance in this constantly changing environment. The c

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Web Dynamics — Setting the Scene is also probably the fastest growing network of this scale the world has ever known. If we include ‘deep’ Web information, i.e. information inaccessible to search engines, such as information stored in databases that can only be accessed through a specialised interface, then the Web is between 400

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WebVigiL: An Approach to Just-In-Time Information Propagation in Large Network-Centric Environmentsy can be implemented in various ways depending upon the ‘openness’ of the underlying systems into which the push technology is being inserted. We have experimented with several approaches: integrated, mediated (using intelligent agents) and wrapper-based. Intelligent agents are useful for supporting

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How Large Is the World Wide Web?umber . of Web pages. Since a database with all the valid URLs on the Web cannot be constructed and maintained, determining . by counting is impossible. For the same reasons, estimating . by directly sampling from the Web is also infeasible. Instead of studying the Web as a whole, one can try to ass

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Methods for Mining Web Communities: Bibliometric, Spectral, and Flow the task of community identification is obviously related to the more fundamental problems of graph partitioning and clustering, the basic task is differentiated from other problems by being within the Web domain. This single difference has many implications for how effective methods work, both in