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CI
2000
114views more  CI 2000»
13 years 7 months ago
A Guided Tour through Some Extensions of the Event Calculus
Kowalski and Sergot's Event Calculus (EC) is a simple temporal formalism that, given a set of event occurrences, derives the maximal validity intervals (MVIs) over which prop...
Iliano Cervesato, Massimo Franceschet, Angelo Mont...
MFCS
2004
Springer
14 years 25 days ago
Complexity of Decision Problems for Simple Regular Expressions
We study the complexity of the inclusion, equivalence, and intersection problem for simple regular expressions arising in practical XML schemas. These basically consist of the conc...
Wim Martens, Frank Neven, Thomas Schwentick
ALIFE
2008
13 years 7 months ago
Criteria for Conceptual and Operational Notions of Complexity
While complex systems have been studied now for more than two decades, there still is no agreement on what complexity actually is. This lack of a definition might be a problem when...
Dominique Chu
CORR
2002
Springer
93views Education» more  CORR 2002»
13 years 7 months ago
Modeling Complex Domains of Actions and Change
This paper studies the problem of modeling complex domains of actions and change within highlevel action description languages. We investigate two main issues of concern: (a) can ...
Antonis C. Kakas, Loizos Michael
MFCS
2000
Springer
13 years 11 months ago
XML Grammars
Abstract. XML documents are described by a document type definition (DTD). An XML-grammar is a formal grammar that captures the syntactic features of a DTD. We investigate properti...
Jean Berstel, Luc Boasson