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» Evaluating a Formal Modelling Language
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WEBDB
2009
Springer
100views Database» more  WEBDB 2009»
15 years 10 months ago
Towards Well-Behaved Schema Evolution
We study the problem of schema evolution in the RDF data model. RDF and the RDFS schema language are W3C standards for flexibly modeling and sharing data on the web. Although sch...
Rada Chirkova, George H. L. Fletcher
ACSD
2006
IEEE
129views Hardware» more  ACSD 2006»
15 years 10 months ago
Extended Timed Automata and Time Petri Nets
Timed Automata (TA) and Time Petri Nets (TPN) are two well-established formal models for real-time systems. Recently, a linear transformation of TA to TPNs preserving reachability...
Patricia Bouyer, Pierre-Alain Reynier, Serge Hadda...
ADBIS
2004
Springer
124views Database» more  ADBIS 2004»
15 years 9 months ago
Vague Spatial Data Types, Set Operations, and Predicates
Many geographical applications deal with spatial objects that cannot be adequately described by determinate, crisp concepts because of their intrinsically indeterminate and vague n...
Alejandro Pauly, Markus Schneider
CONTEXT
2003
Springer
15 years 9 months ago
On the Difference between Bridge Rules and Lifting Axioms
Abstract. In a previous paper, we proposed a first formal and conceptual comparison between the two most important formalizations of context in AI: Propositional Logic of Context ...
Paolo Bouquet, Luciano Serafini
DSN
2000
IEEE
15 years 8 months ago
An Automatic SPIN Validation of a Safety Critical Railway Control System
This paper describes an experiment in formal specification and validation performed in the context of an industrial joint project. The project involved an Italian company working...
Stefania Gnesi, Diego Latella, Gabriele Lenzini, C...