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» The Inclusion Problem for Regular Expressions
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JACM
2007
90views more  JACM 2007»
13 years 8 months ago
A characterization of regular expressions under bisimulation
We solve an open question of Milner [1984]. We define a set of so-called well-behaved finite automata that, modulo bisimulation equivalence, corresponds exactly to the set of reg...
Jos C. M. Baeten, Flavio Corradini, Clemens Grabma...
ICDM
2008
IEEE
129views Data Mining» more  ICDM 2008»
14 years 3 months ago
Sequence Mining Automata: A New Technique for Mining Frequent Sequences under Regular Expressions
In this paper we study the problem of mining frequent sequences satisfying a given regular expression. Previous approaches to solve this problem were focusing on its search space,...
Roberto Trasarti, Francesco Bonchi, Bart Goethals
ICDE
2011
IEEE
263views Database» more  ICDE 2011»
13 years 10 days ago
Adding regular expressions to graph reachability and pattern queries
—It is increasingly common to find graphs in which edges bear different types, indicating a variety of relationships. For such graphs we propose a class of reachability queries ...
Wenfei Fan, Jianzhong Li, Shuai Ma, Nan Tang, Ying...
IPPS
2010
IEEE
13 years 6 months ago
Hardware implementation for scalable lookahead Regular Expression detection
Regular Expressions (RegExes) are widely used in various applications to identify strings of text. Their flexibility, however, increases the complexity of the detection system and ...
Masanori Bando, N. Sertac Artan, Nishit Mehta, Yi ...
FOSSACS
2008
Springer
13 years 10 months ago
Optimal Lower Bounds on Regular Expression Size Using Communication Complexity
The problem of converting deterministic finite automata into (short) regular expressions is considered. It is known that the required expression size is 2(n) in the worst case for ...
Hermann Gruber, Jan Johannsen