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» The Language, the Expression, and the (Small) Automaton
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PODS
2009
ACM
122views Database» more  PODS 2009»
14 years 8 months ago
Satisfiability of downward XPath with data equality tests
In this work we investigate the satisfiability problem for the logic XPath( , , =), that includes all downward axes as well as equality and inequality tests. We address this probl...
Diego Figueira
PODS
2007
ACM
104views Database» more  PODS 2007»
14 years 7 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...
LICS
2009
IEEE
14 years 2 months ago
Expressiveness and Closure Properties for Quantitative Languages
Weighted automata are nondeterministic automata with numerical weights on transitions. They can define quantitative languages L that assign to each word w a real number L(w). In ...
Krishnendu Chatterjee, Laurent Doyen, Thomas A. He...
CSL
2010
Springer
13 years 8 months ago
Automata vs. Logics on Data Words
Abstract. The relationship between automata and logics has been investigated since the 1960s. In particular, it was shown how to determine, given an automaton, whether or not it is...
Michael Benedikt, Clemens Ley, Gabriele Puppis
PAMI
1998
87views more  PAMI 1998»
13 years 7 months ago
Learning Local Languages and Their Application to DNA Sequence Analysis
—This paper concerns an efficient algorithm for learning in the limit a special type of regular languages called strictly locally testable languages from positive data, and its a...
Takashi Yokomori, Satoshi Kobayashi