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AWIC
2005
Springer
15 years 10 months ago
Specifying Schema Mappings for Query Reformulation in Data Integration Systems
In data integration systems there is a problem of answering queries through a target schema, given a set of mappings between source schemas and the target schema, and given that th...
Tadeusz Pankowski
ESWS
2005
Springer
15 years 10 months ago
Nonmonotonic Ontological and Rule-Based Reasoning with Extended Conceptual Logic Programs
We present extended conceptual logic programs (ECLPs), for which reasoning is decidable and, moreover, can be reduced to finite answer set programming. ECLPs are useful to reason ...
Stijn Heymans, Davy Van Nieuwenborgh, Dirk Vermeir
ESA
2004
Springer
98views Algorithms» more  ESA 2004»
15 years 10 months ago
Competitive Online Approximation of the Optimal Search Ratio
How efficiently can we search an unknown environment for a goal in unknown position? How much would it help if the environment were known? We answer these questions for simple poly...
Rudolf Fleischer, Thomas Kamphans, Rolf Klein, Elm...
IWCIA
2004
Springer
15 years 10 months ago
Shape Preserving Sampling and Reconstruction of Grayscale Images
Abstract. The expressiveness of a lot of image analysis algorithms depends on the question whether shape information is preserved during digitization. Most existing approaches to a...
Peer Stelldinger
134
Voted
ASP
2003
Springer
15 years 9 months ago
Properties of maximal cliques of a pair-wise compatibility graph for three nonmonotonic reasoning system
In this paper we define the notion of a compatibility relation so as to have a common framework for three nonmonotonic reasoning systems: normal logic programming, extended logic ...
Robert E. Mercer, Vincent Risch