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CAAP
1994
15 years 1 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
IANDC
2008
109views more  IANDC 2008»
14 years 10 months ago
Compositions of extended top-down tree transducers
Abstract. Unfortunately the class of transformations computed by nondeleting and linear extended top-down tree transducers [Graehl, Knight: Training Tree Transducers. HLT-NAACL 200...
Andreas Maletti
WWW
2008
ACM
15 years 10 months ago
Size matters: word count as a measure of quality on wikipedia
Wikipedia, "the free encyclopedia", now contains over two million English articles, and is widely regarded as a highquality, authoritative encyclopedia. Some Wikipedia a...
Joshua E. Blumenstock
LICS
1995
IEEE
15 years 1 months ago
Tree Canonization and Transitive Closure
We prove that tree isomorphism is not expressible in the language (FO + TC + COUNT). This is surprising since in the presence of ordering the language captures NL, whereas tree is...
Kousha Etessami, Neil Immerman
POPL
2004
ACM
15 years 10 months ago
A logic you can count on
We prove the decidability of the quantifier-free, static fragment of ambient logic, with composition adjunct and iteration, which corresponds to a kind of regular expression langu...
Silvano Dal-Zilio, Denis Lugiez, Charles Meyssonni...