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JALC
2007
90views more  JALC 2007»
13 years 11 months ago
Learning Unary Automata
We determine the complexity of learning problems for unary regular languages. We begin by investigating the minimum consistent dfa (resp. nfa) problem which is known not to be app...
Gregor Gramlich, Ralf Herrmann
JALC
2007
95views more  JALC 2007»
13 years 11 months ago
Learning Regular Tree Languages from Correction and Equivalence Queries
Inspired by the results obtained in the string case, we present in this paper the extension of the correction queries to regular tree languages. Relying on Angluin’s and Sakakib...
Catalin Ionut Tîrnauca, Cristina Tîrna...
JALC
2007
84views more  JALC 2007»
13 years 11 months ago
Enumeration of Context-Free Languages and Related Structures
In this paper, we consider the enumeration of context-free languages. In particular, for any reasonable descriptional complexity measure for context-free grammars, we demonstrate ...
Michael Domaratzki, Alexander Okhotin, Jeffrey Sha...
JALC
2007
109views more  JALC 2007»
13 years 11 months ago
A Family of NFAs Free of State Reductions
Merging states in finite automata is a main method of reducing the size of the representation of regular languages. The process has been extensively studied for deterministic fi...
Cezar Câmpeanu, Nicolae Santean, Sheng Yu
JALC
2007
79views more  JALC 2007»
13 years 11 months ago
Two-Way Finite Automata with a Write-Once Track
The basic finite automata model has been extended over the years with different acceptance modes (nondeterminism, alternation), new or improved devices (two-way heads, pebbles, ...
Berke Durak
JALC
2007
57views more  JALC 2007»
13 years 11 months ago
Multi-dimensional Descriptional Complexity of P Systems
Miguel A. Gutiérrez-Naranjo, Mario J. P&eac...