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89
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FUIN
2002
60views more  FUIN 2002»
15 years 3 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
NAACL
2010
15 years 1 months ago
Why Synchronous Tree Substitution Grammars?
Synchronous tree substitution grammars are a translation model that is used in syntax-based machine translation. They are investigated in a formal setting and compared to a compet...
Andreas Maletti
125
Voted
FUIN
2010
98views more  FUIN 2010»
15 years 29 days ago
On the Borel Complexity of MSO Definable Sets of Branches
An infinite binary word can be identified with a branch in the full binary tree. We consider sets of branches definable in monadic second-order logic over the tree, where we allow ...
Mikolaj Bojanczyk, Damian Niwinski, Alexander Rabi...
130
Voted
SIAMCOMP
1998
102views more  SIAMCOMP 1998»
15 years 3 months ago
L-Printable Sets
A language is L-printable if there is a logspace algorithm which, on input 1n, prints all members in the language of length n. Following the work of Allender and Rubinstein [SIAM J...
Lance Fortnow, Judy Goldsmith, Matthew A. Levy, St...
124
Voted
PODS
2007
ACM
104views Database» more  PODS 2007»
16 years 3 months ago
XML transformation by tree-walking transducers with invisible pebbles
The pebble tree automaton and the pebble tree transducer are enhanced by additionally allowing an unbounded number of `invisible' pebbles (as opposed to the usual `visible�...
Joost Engelfriet, Hendrik Jan Hoogeboom, Bart Samw...