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We propose a methodology for building a robust query classification system that can identify thousands of query classes, while dealing in real time with the query volume of a commercial Web search engine. We use a pseudo relevance feedback technique: given a query, we determine its topic by...
Numerous studies over the past ten years have shown that concern for personal privacy is a major impediment to the growth of e-commerce. These concerns are so serious that most if not all consumer watchdog groups have called for some form of privacy protection for Internet users. In response,...
The World Wide Web (WWW) is rapidly becoming important for society as a medium for sharing data, information, and services, and there is a growing interest in tools for understanding collective behavior and emerging phenomena in the WWW. In this article we focus on the problem of searching and...
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