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DEON
2010
Springer
13 years 11 months ago
Avoiding Deontic Explosion by Contextually Restricting Aggregation
Abstract. In this paper, we present an adaptive logic for deontic conflicts, called P2.1r , that is based on Goble’s logic SDLaPe—a bimodal extension of Goble’s logic P that...
Joke Meheus, Mathieu Beirlaen, Frederik Van De Put...
EUSFLAT
2007
116views Fuzzy Logic» more  EUSFLAT 2007»
13 years 9 months ago
The Induced Generalized OWA Operator
We study different types of aggregation operators. We focus on the generalized OWA (GOWA) operator developed by Yager which represents a generalization to a wide range of aggregat...
José M. Merigó, Anna Maria Gil Lafue...
DLOG
2003
13 years 8 months ago
Rewriting Aggregate Queries using Description Logic
This paper presents an application of a DL reasoner to the optimization of an object-relational query language. Queries containing aggregate functions are difficult to optimize be...
David DeHaan, David Toman, Grant E. Weddell
CORR
2007
Springer
132views Education» more  CORR 2007»
13 years 7 months ago
Data Cube: A Relational Aggregation Operator Generalizing Group-By, Cross-Tab, and Sub-Totals
Data analysis applications typically aggregate data across many dimensions looking for anomalies or unusual patterns. The SQL aggregate functions and the GROUP BY operator produce ...
Jim Gray, Surajit Chaudhuri, Adam Bosworth, Andrew...
EUSFLAT
2001
13 years 8 months ago
A geometric approach to aggregation
In analogy to the representation of the standard probabilistic average as an expected value of a random variable, a geometric approach to aggregation is proposed. Several properti...
Erich-Peter Klement, Radko Mesiar, Endre Pap