2776 search results - page 368 / 556 » System-Level Abstraction Semantics |
172
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ERCIMDL
2007
Springer
16 years 21 days ago
2007
Springer
Abstract. In this paper we present an approach to question answering over heterogeneous knowledge sources that makes use of different ontology management components within the sce...
167
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ESORICS
2007
Springer
16 years 21 days ago
2007
Springer
Abstract. Information security is a pressing challenge for mobile code technologies. In order to claim end-to-end security of mobile code, it is necessary to establish that the cod...
126
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ESWS
2007
Springer
16 years 21 days ago
2007
Springer
Abstract When creating Semantic Web data, users have to make a critical choice for a vocabulary: only through shared vocabularies can meaning be established. A centralised policy p...
153
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ICDT
2007
ACM
16 years 21 days ago
2007
ACM
Abstract. Information concerning the origin of data (that is, its provenance) is important in many areas, especially scientific recordkeeping. Currently, provenance information mu...
197
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ICDT
2007
ACM
16 years 21 days ago
2007
ACM
Abstract. We study containment of conjunctive queries that are evaluated over databases that may contain tuples with null values. We assume the semantics of SQL for single block qu...