Sciweavers

2479 search results - page 336 / 496
» Quantum complexity theory
Sort
View
PODS
2007
ACM
104views Database» more  PODS 2007»
16 years 6 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...
PODS
2008
ACM
123views Database» more  PODS 2008»
16 years 6 months ago
Evaluating rank joins with optimal cost
In the rank join problem, we are given a set of relations and a scoring function, and the goal is to return the join results with the top K scores. It is often the case in practic...
Karl Schnaitter, Neoklis Polyzotis
PODS
2008
ACM
250views Database» more  PODS 2008»
16 years 6 months ago
Approximating predicates and expressive queries on probabilistic databases
We study complexity and approximation of queries in an expressive query language for probabilistic databases. The language studied supports the compositional use of confidence com...
Christoph Koch
PODS
2008
ACM
110views Database» more  PODS 2008»
16 years 6 months ago
Static analysis of active XML systems
Active XML is a high-level specification language tailored to dataintensive, distributed, dynamic Web services. Active XML is based on XML documents with embedded function calls. ...
Serge Abiteboul, Luc Segoufin, Victor Vianu
ICSE
2008
IEEE-ACM
16 years 6 months ago
Creating a cognitive metric of programming task difficulty
Conducting controlled experiments about programming activities often requires the use of multiple tasks of similar difficulty. In previously reported work about a controlled exper...
Brian de Alwis, Gail C. Murphy, Shawn Minto