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Lecture Notes in Computer Science
Building databases and information systems over data extracted from heterogeneous sources like the Web poses a severe challenge: most data is incomplete and thus difficult to process in structured queries. This is especially true for sophisticated query techniques like Top -k querying where rankings are aggregated over several sources. The intelligent combination of efficient data processing algorithms with crowdsourced database operators promises to alleviate the situation. Yet the scalabilitydoi:10.1007/978-3-319-12206-9_10 fatcat:i6clz5fhejahtfhosmyvvtgh4e