740 search results - page 60 / 148 » Querying the Web of Data: A Formal Approach |
265
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PPSWR
2005
Springer
15 years 11 months ago
2005
Springer
We present typing rules for the Web query language Xcerpt. The rules provide a descriptive type system: the typing of a program is an ation of its semantics. The rules can also be ...
224
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SIGIR
2012
ACM
13 years 8 months ago
2012
ACM
Combating Web spam is one of the greatest challenges for Web search engines. State-of-the-art anti-spam techniques focus mainly on detecting varieties of spam strategies, such as ...
174
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DEBU
2000
15 years 6 months ago
2000
In a traditional information retrieval system, it is assumed that queries can be posed about any topic. In reality, a large fraction of web queries are posed about a relatively sm...
173
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ISMIS
2000
Springer
15 years 10 months ago
2000
Springer
Abstract. The conventional use of databases is commonly restricted to the retrieval of factual data in the form of tuples or records. However most databases also contain metadata i...
177
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AAAI
2007
15 years 8 months ago
2007
Efficient query answering over ontologies is one of the most useful and important services to support Semantic Web applications. Approximation has been identified as a potential...