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IQIS
2007
ACM
13 years 9 months ago
On the performance of one-to-many data transformations
Relational Database Systems often support activities like data warehousing, cleaning and integration. All these activities require performing some sort of data transformations. Si...
Paulo J. F. Carreira, Helena Galhardas, Joã...
JUCS
2010
100views more  JUCS 2010»
13 years 6 months ago
Spatial Reasoning with Integrated Qualitative-Metric Fuzzy Constraint Networks
Abstract: Qualitative Spatial Reasoning can be greatly improved if metric information can be represented and reasoning can be performed on it; moreover, modelling vagueness and unc...
Marco Falda
AAAI
1998
13 years 9 months ago
An Algebra for Cyclic Ordering of 2D Orientations
Wedefine an algebra of ternary relations for cyclic ordering of 2Dorientations. Thealgebra (1) is a refinement of the CYCORDtheory; (2) contains 24 atomic relations, hence 224 gen...
Amar Isli, Anthony G. Cohn
DLOG
2010
13 years 5 months ago
Optimizing Algebraic Tableau Reasoning for SHOQ: First Experimental Results
In this paper we outline an algebraic tableau algorithm for the DL SHOQ, which supports more informed reasoning due to the use of semantic partitioning and integer programming. We ...
Jocelyne Faddoul, Volker Haarslev
ADBIS
2007
Springer
137views Database» more  ADBIS 2007»
14 years 1 months ago
An Object-Oriented Based Algebra for Ontologies and Their Instances
Nowadays, ontologies are used in a lot of diverse research fields. They provide with the capability to describe a huge set of information contents. Therefore, several approaches f...
Stéphane Jean, Yamine Aït Ameur, Guy P...