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ICDAR
2003
IEEE
14 years 1 months ago
Handwritten Word Recognition based on Structural Characteristics and Lexical Support
In this paper a handwritten recognition algorithm based on structural characteristics, histograms and profiles, is presented. The well-known horizontal and vertical histograms are...
Ergina Kavallieratou, Kyriakos N. Sgarbas, Nikos F...
LICS
2008
IEEE
14 years 2 months ago
Winning Regions of Higher-Order Pushdown Games
In this paper we consider parity games defined by higher-order pushdown automata. These automata generalise pushdown automata by the use of higher-order stacks, which are nested ...
Arnaud Carayol, Matthew Hague, Antoine Meyer, C.-H...
WIA
2007
Springer
14 years 1 months ago
Weighted Automata and Weighted Logics with Discounting
We introduce a weighted logic with discounting and we establish B¨uchi’s and Elgot’s theorem for weighted automata over finite words and arbitrary commutative semirings. The...
Manfred Droste, George Rahonis
IPL
2006
91views more  IPL 2006»
13 years 7 months ago
Improved undecidability results on weighted timed automata
In this paper, we strengthen two recent undecidability results of [9,10] about weighted timed automata, an extension of timed automata with cost variables. More precisely, we prop...
Patricia Bouyer, Thomas Brihaye, Nicolas Markey
TCS
2008
13 years 7 months ago
On varieties of meet automata
Eilenberg's variety theorem gives a bijective correspondence between varieties of languages and varieties of finite monoids. The second author gave a similar relation between...
Ondrej Klíma, Libor Polák