521 search results - page 57 / 105 » Answering Queries by Semantic Caches |
JELIA
1998
Springer
15 years 2 months ago
1998
Springer
Abstract. One of the maincharacteristics of logical reasoning in knowledge based systems is its high computational complexity. Anytime deduction and anytime compilation are two att...
ESWS
2010
Springer
14 years 12 months ago
2010
Springer
Abstract. Description Logic Programs (DL-programs) have been introduced to combine ontological and rule-based reasoning in the context of the Semantic Web. A DL-program loosely com...
AAAI
2012
13 years 10 days ago
2012
We tackle the problem of defining a well-founded semantics (WFS) for Datalog rules with existentially quantified variables in their heads and negations in their bodies. In partic...
ISI
2006
Springer
14 years 10 months ago
2006
Springer
Access control mechanisms are commonly used to provide control over who may access sensitive information. However, malicious users can exploit the correlation among the data and in...
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DEXAW
2007
IEEE
15 years 1 months ago
2007
IEEE
The problem of efficiently evaluating XPath and XQuery queries has become increasingly significant since more and more XML data is stored in its native form. We propose a novel op...