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» An Insertion into the Chomsky Hierarchy
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BIRTHDAY
1999
Springer
13 years 9 months ago
An Insertion into the Chomsky Hierarchy?
This review paper will report on some recent discoveries in the area of Formal Languages, chie y by F. Otto, G. Buntrock and G. Niemann. These discoveries have pointed out certain ...
Robert McNaughton
FCT
2005
Springer
13 years 10 months ago
Leftist Grammars and the Chomsky Hierarchy
Leftist grammars can be characterized in terms of rules of the form a → ba and cd → d, without distinction between terminals and nonterminals. They were introduced by Motwani e...
Tomasz Jurdzinski, Krzysztof Lorys
CAI
2009
Springer
13 years 3 months ago
On the Reversibility of Parallel Insertion, and Its Relation to Comma Codes
This paper studies conditions under which the operation of parallel insertion can be reversed by parallel deletion, i.e., when does the equality (L1 L2) L2 = L1 hold for language...
Bo Cui, Lila Kari, Shinnosuke Seki
ACL
2010
13 years 3 months ago
Estimating Strictly Piecewise Distributions
Strictly Piecewise (SP) languages are a subclass of regular languages which encode certain kinds of long-distance dependencies that are found in natural languages. Like the classe...
Jeffrey Heinz, James Rogers