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» Restricted Walks in Regular Trees
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NJC
2006
102views more  NJC 2006»
13 years 4 months ago
Online Evaluation of Regular Tree Queries
Regular tree queries (RTQs) are a class of queries considered especially relevant for the expressiveness and evaluation of XML query languages. The algorithms proposed so far for ...
Alexandru Berlea
CPC
1998
154views more  CPC 1998»
13 years 4 months ago
Asymptotic Enumeration of Eulerian Circuits in the Complete Graph
We determine the asymptotic behaviour of the number of eulerian circuits in a complete graph of odd order. One corollary of our result is the following. If a maximum random walk, ...
Brendan D. McKay, Robert W. Robinson
ICDT
2012
ACM
226views Database» more  ICDT 2012»
11 years 7 months ago
Bounded repairability for regular tree languages
We consider the problem of repairing unranked trees (e.g., XML documents) satisfying a given restriction specification R (e.g., a DTD) into unranked trees satisfying a given targ...
Gabriele Puppis, Cristian Riveros, Slawek Staworko
CAAP
1994
13 years 8 months ago
Some Results on Top-Context-Free Tree Languages
Top-context-free tree languages (called cor gulier by Arnold and Dauchet 1, 2]) constitute a natural subclass of context-free tree languages. In this paper, we give further evidenc...
Dieter Hofbauer, Maria Huber, Gregory Kucherov
FUIN
2002
60views more  FUIN 2002»
13 years 4 months ago
One-Visit Caterpillar Tree Automata
We study caterpillar tree automata [3] that are restricted to enter any subtree at most one time (or k times). We show that, somewhat surprisingly, the deterministic one-visit aut...
Alexander Okhotin, Kai Salomaa, Michael Domaratzki