2661 search results - page 351 / 533 » A Semantics for Abstraction |
161
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EPIA
2007
Springer
16 years 24 days ago
2007
Springer
Abstract. The two puzzles are the Lottery Paradox and the Amalgamation Paradox, which both point out difficulties for aggregating uncertain information. A generalization of the lot...
175
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ERCIMDL
2007
Springer
16 years 24 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 24 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...
154
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ICDT
2007
ACM
16 years 23 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...
200
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ICDT
2007
ACM
16 years 23 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...