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» Regular Expressions for Languages over Infinite Alphabets
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FCT
2007
Springer
14 years 1 months ago
On Notions of Regularity for Data Languages
Abstract. Motivated by considerations in XML theory and model checking, data strings have been introduced as an extension of finite alphabet strings which carry, at each position,...
Henrik Björklund, Thomas Schwentick
DIAGRAMS
2008
Springer
13 years 9 months ago
Spider Diagrams of Order and a Hierarchy of Star-Free Regular Languages
Abstract. The spider diagram logic forms a fragment of constraint diagram logic and is designed to be primarily used as a diagrammatic software specification tool. Our interest is ...
Aidan Delaney, John Taylor, Simon J. Thompson
ICDE
2003
IEEE
209views Database» more  ICDE 2003»
14 years 8 months ago
An Evaluation of Regular Path Expressions with Qualifiers against XML Streams
This paper presents SPEX, a streamed and progressive evaluation of regular path expressions with XPath-like qualifiers against XML streams. SPEX proceeds as follows. An expression...
Dan Olteanu, François Bry, Tobias Kiesling
CORR
2010
Springer
143views Education» more  CORR 2010»
13 years 7 months ago
Parikh Images of Regular Languages: Complexity and Applications
We show that the Parikh image of the language of an NFA with n states over an alphabet of size k can be described as a finite union of linear sets with at most k generators and to...
Anthony Widjaja To
DLT
2006
13 years 9 months ago
Prime Decompositions of Regular Languages
We investigate factorizations of regular languages in terms of prime languages. A language is said to be strongly prime decomposable if any way of factorizing the language yields a...
Yo-Sub Han, Kai Salomaa, Derick Wood