On permutation languages
dc.contributor.advisor | Nagy, Benedek | |
dc.contributor.author | Angyal, Dávid | |
dc.contributor.department | DE--Informatikai Kar | hu_HU |
dc.date.accessioned | 2014-05-05T07:50:34Z | |
dc.date.available | 2014-05-05T07:50:34Z | |
dc.date.created | 2014-05-05 | |
dc.date.issued | 2014-05-05T07:50:34Z | |
dc.description.abstract | In this thesis we investigate some interesting properties of the family of permutation languages and its subclasses. Permutation grammars are context-free grammars extended with special non-context-free rules: permutation rules. Permutation rules have a sequence of nonterminal symbols on the left-hand side and a permutation of that sequence on the right-hand side. The simplest permutation rules are of the form AB -> BA, more complex permutation rules can be obtained by length increase, for instance ABC -> CAB. We discuss some of the subclasses of permutation grammars. We also introduce a modification to Earley's parser algorithm for context-free grammars in order to handle Perm(2, 1) grammars and discuss an efficient implementation. | hu_HU |
dc.description.course | programtervező informatikus | hu_HU |
dc.description.degree | MSc/MA | hu_HU |
dc.format.extent | 41 | hu_HU |
dc.identifier.uri | http://hdl.handle.net/2437/191126 | |
dc.language.iso | en | hu_HU |
dc.subject | formal languages | hu_HU |
dc.subject | permutation languages | hu_HU |
dc.subject | parsing | hu_HU |
dc.subject.dspace | DEENK Témalista::Informatika::Számítógéptudomány | hu_HU |
dc.title | On permutation languages | hu_HU |