278 search results - page 5 / 56 » Enumerating Regular Expressions and Their Languages |
ECHT
1992
13 years 11 months ago
1992
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...
AFL
2011
12 years 7 months ago
2011
In this paper, we propose a new variant of Accepting Networks of Evolutionary Processors, in which the operations can be applied only arbitrarily to the words, while the filters ...
DLT
2008
13 years 9 months ago
2008
Abstract. Since recognizable tree languages are closed under the rational operations, every regular tree expression denotes a recognizable tree language. We provide an alternative ...
IFL
2007
Springer
14 years 1 months ago
2007
Springer
LATA
2011
Springer
12 years 10 months ago
2011
Springer
In this paper we propose a hierarchy of classes of languages, generated by networks of evolutionary processors with the filters in several special classes of regular sets. More p...