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SBBD
2007
126views Database» more  SBBD 2007»
13 years 10 months ago
Constraint-based Tree Pattern Mining
Abstract. A lot of recent applications dealing with complex data require sophisticated data structures (trees or graphs) for their specification. Recently, several techniques for ...
Sandra de Amo, Nyara A. Silva, Ronaldo P. Silva, F...
DLOG
2006
13 years 10 months ago
PSPACE Automata for Description Logics
Tree automata are often used for satisfiability testing in the area of description logics, which usually yields ExpTime complexity results. We examine conditions under which this ...
Jan Hladik, Rafael Peñaloza
ICALP
2005
Springer
14 years 2 months ago
Logics for Unranked Trees: An Overview
Labeled unranked trees are used as a model of XML documents, and logical languages for them have been studied actively over the past several years. Such logics have different purpo...
Leonid Libkin
IJFCS
2007
80views more  IJFCS 2007»
13 years 8 months ago
Bisimulation Minimization of Tree Automata
We extend an algorithm by Paige and Tarjan that solves the coarsest stable refinement problem to the domain of trees. The algorithm is used to minimize non-deterministic tree auto...
Parosh Aziz Abdulla, Johanna Högberg, Lisa Ka...
FCT
2007
Springer
14 years 2 months ago
On the Topological Complexity of Weakly Recognizable Tree Languages
We show that the family of tree languages recognized by weak alternating automata is closed by three set theoretic operations that correspond to sum, multiplication by ordinals <...
Jacques Duparc, Filip Murlak