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FSTTCS
2010
Springer
13 years 5 months ago
Beyond Hyper-Minimisation---Minimising DBAs and DPAs is NP-Complete
In this paper we study the problem of minimising deterministic automata over finite and infinite words. Deterministic finite automata are the simplest devices to recognise regular...
Sven Schewe
CSL
2010
Springer
13 years 8 months ago
Automata vs. Logics on Data Words
Abstract. The relationship between automata and logics has been investigated since the 1960s. In particular, it was shown how to determine, given an automaton, whether or not it is...
Michael Benedikt, Clemens Ley, Gabriele Puppis
PLDI
2009
ACM
14 years 8 months ago
A decision procedure for subset constraints over regular languages
Reasoning about string variables, in particular program inputs, is an important aspect of many program analyses and testing frameworks. Program inputs invariably arrive as strings...
Pieter Hooimeijer, Westley Weimer
CORR
2010
Springer
139views Education» more  CORR 2010»
13 years 7 months ago
A proof Procedure for Testing Membership in Regular Expressions
We propose an algorithm that tests membership for regular expressions and show that the algorithm is correct. This algorithm is written in the style of a sequent proof system. The...
Keehang Kwon, Hong Pyo Ha, Jiseung Kim
ECHT
1992
13 years 11 months ago
Gram: A Graph Data Model and Query Language
We present a model for data organized as graphs. Regular expressions over the types of the node and edge labels are used to qualify connected subgraphs. An algebraic language base...
Bernd Amann, Michel Scholl