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» Quotient Complexity of Regular Languages
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ICALP
2010
Springer
14 years 21 days ago
A Topological Approach to Recognition
We propose a new approach to the notion of recognition, which departs from the classical definitions by three specific features. First, it does not rely on automata. Secondly, it...
Mai Gehrke, Serge Grigorieff, Jean-Eric Pin
LATIN
2010
Springer
13 years 10 months ago
Complexity of Operations on Cofinite Languages
We study the worst case complexity of regular operations on cofinite languages (i.e., languages whose complement is finite) and provide algorithms to compute efficiently the result...
Frédérique Bassino, Laura Giambruno,...
WIA
1999
Springer
14 years 5 days ago
An Extendible Regular Expression Compiler for Finite-State Approaches in Natural Language Processing
Finite-state techniques are widely used in various areas of Natural Language Processing (NLP). As Kaplan and Kay [12] have argular expressions are the appropriate level of abstract...
Gertjan van Noord, Dale Gerdemann
FOSSACS
2008
Springer
13 years 9 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
SCHOLARPEDIA
2008
122views more  SCHOLARPEDIA 2008»
13 years 6 months ago
Calogero-Moser system
ABSTRACT. We discuss a special eigenstate of the quantized periodic CalogeroMoser system associated to a root system. This state has the property that its eigenfunctions, when rega...
Francesco Calogero