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PEPM
2010
ACM
15 years 10 months ago
Optimizing relational algebra operations using generic equivalence discriminators and lazy products
We show how to efficiently evaluate generic map-filter-product queries, generalizations of select-project-join (SPJ) queries in relational algebra, based on a combination of two...
Fritz Henglein
CDC
2009
IEEE
211views Control Systems» more  CDC 2009»
15 years 6 months ago
On stability of linear switched differential algebraic equations
Abstract— This paper studies linear switched differential algebraic equations (DAEs), i.e., systems defined by a finite family of linear DAE subsystems and a switching signal t...
Daniel Liberzon, Stephan Trenn
DLOG
2001
15 years 3 months ago
Combining Tableaux and Algebraic Methods for Reasoning with Qualified Number Restrictions
This paper investigates an optimization technique for reasoning with qualified number restrictions in the description logic ALCQHR+ . We present a hybrid architecture where a stan...
Volker Haarslev, Martina Timmann, Ralf Möller
UML
2005
Springer
15 years 7 months ago
Using Process Algebra to Validate Behavioral Aspects of Object-Oriented Models
We present in this paper a rigorous and automated based approach for the behavioral validation of control software systems. This approach relies on metamodeling, model-transformati...
Alban Rasse, Jean-Marc Perronne, Pierre-Alain Mull...
LCPC
1999
Springer
15 years 6 months ago
A Linear Algebra Formulation for Optimising Replication in Data Parallel Programs
In this paper, we present an efficient technique for optimising data replication under the data parallel programming model. We propose a precise mathematical representation for da...
Olav Beckmann, Paul H. J. Kelly