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ICALP
2005
Springer
14 years 14 hour ago
Petri Algebras
The firing rule of Petri nets relies on a residuation operation for the commutative monoid of natural numbers. We identify a class of residuated commutative monoids, called Petri ...
Eric Badouel, Jules Chenou, Goulven Guillou
DCAI
2008
13 years 8 months ago
The Intelligent Butler: A Virtual Agent for Disabled and Elderly People Assistance
Abstract. Social assistance constitutes an increasing problem in developed countries, which can be considered from two dimensions: the home and the hospital frameworks. Anyway, mos...
Gabriel Fiol-Roig, Diana Arellano, Francisco J. Pe...
TSMC
1998
152views more  TSMC 1998»
13 years 6 months ago
Discrete event representation of qualitative models using Petri nets
—The paper discusses how Petri nets may be used for the qualitative modeling of physical systems. The qualitative state of a system is represented by the marking of the net. The ...
Alessandra Fanni, Alessandro Giua
KRDB
1998
83views Database» more  KRDB 1998»
13 years 7 months ago
Semantic Query Optimisation and Rule Graphs
Previous researchers note the problem for semantic optimisation of database queries caused by its production of a large number of semantically equivalent alternative queries, from...
Jerome Robinson, Barry G. T. Lowden
PC
2002
137views Management» more  PC 2002»
13 years 6 months ago
The Chebyshev iteration revisited
Compared to Krylov space methods based on orthogonal or oblique projection, the Chebyshev iteration does not require inner products and is therefore particularly suited for massiv...
Martin H. Gutknecht, Stefan Röllin