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LATA
2009
Springer
15 years 4 months ago
Decision Problems for Convex Languages
We examine decision problems for various classes of convex languages, previously studied by Ang and Brzozowski under the name “continuous languages”. We can decide whether a la...
Janusz A. Brzozowski, Jeffrey Shallit, Zhi Xu
FSTTCS
2008
Springer
14 years 11 months ago
Boolean algebras of unambiguous context-free languages
Several recent works have studied subfamilies of deterministic context-free languages with good closure properties, for instance the families of input-driven or visibly pushdown la...
Didier Caucal
ISAMI
2010
14 years 8 months ago
Employing Compact Intra-genomic Language Models to Predict Genomic Sequences and Characterize Their Entropy
Probabilistic models of languages are fundamental to understand and learn the profile of the subjacent code in order to estimate its entropy, enabling the verification and predicti...
Sérgio A. D. Deusdado, Paulo Carvalho
ICALP
2000
Springer
15 years 1 months ago
On the Power of Tree-Walking Automata
Abstract. Tree-walking automata (TWAs) recently received new attention in the fields of formal languages and databases. Towards a better understanding of their expressiveness, we c...
Frank Neven, Thomas Schwentick
RTA
2000
Springer
15 years 1 months ago
Parallelism Constraints
Parallelism constraints are logical descriptions of trees. Parallelism constraints subsume dominance constraints and are equal in expressive power to context unification. Paralleli...
Katrin Erk, Joachim Niehren