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WIA
2004
Springer
14 years 1 months ago
Brute Force Determinization of NFAs by Means of State Covers
Finite automata determinization is a critical operation for numerous practical applications such as regular expression search. Algorithms have to deal with the possible blow up of ...
Jean-Marc Champarnaud, Fabien Coulon, Thomas Paran...
CADE
2010
Springer
13 years 8 months ago
An Extension of Complex Role Inclusion Axioms in the Description Logic SROIQ
We propose an extension of the syntactic restriction for complex role inclusion axioms in the description logic SROIQ. Like the original restriction in SROIQ, our restrictions can ...
Yevgeny Kazakov
ICDT
2003
ACM
139views Database» more  ICDT 2003»
14 years 27 days ago
New Rewritings and Optimizations for Regular Path Queries
All the languages for querying semistructured data and the web use as an integral part regular expressions. Based on practical observations, finding the paths that satisfy those r...
Gösta Grahne, Alex Thomo
CORR
2011
Springer
162views Education» more  CORR 2011»
13 years 2 months ago
Isomorphism of regular trees and words
The complexity of the isomorphism problem for regular trees, regular linear orders, and regular words is analyzed. A tree is regular if it is isomorphic to the prefix order on a r...
Markus Lohrey, Christian Mathissen
ENTCS
2008
87views more  ENTCS 2008»
13 years 7 months ago
Checking Emptiness of Non-Deterministic Regular Types with Set Operators
An algorithm to decide the emptiness of a regular type expression with set operators given a set of parameterized type definitions is presented. The algorithm generalizes previous...
Lunjin Lu