Chapter 4. Crawling the Semantic Web
In this chapter, we examine techniques for extracting and processing data in the World Wide Web and the Semantic Web . The World Wide Web completely changed the way that people access information. Before the Web existed, finding obscure pieces of information meant taking a trip to the library, along with hours or perhaps days of research. In extreme cases, it meant calling or writing a letter to an expert and waiting for a reply. Today not only are there websites on every imaginable topic, but there are search engines, encyclopedias, dictionaries, maps, news, electronic books, and an incredible array of other ...
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