157 search results - page 4 / 32 » Incremental Evaluation of Datalog Queries |
PODS
2010
ACM
13 years 10 months ago
2010
ACM
We study highly expressive query languages such as datalog, fixpoint, and while-languages on probabilistic databases. We generalize these languages such that computation steps (e....
PVLDB
2010
13 years 7 months ago
2010
Virtual views are a mechanism that facilitates re-use and makes queries easier to express. However the use of iterative view definitions makes very simple query evaluation and an...
PODS
2010
ACM
14 years 1 months ago
2010
ACM
This paper approaches the incremental view maintenance problem from an algebraic perspective. We construct a ring of databases and use it as the foundation of the design of a quer...
FOIKS
2006
Springer
14 years 8 days ago
2006
Springer
Abstract. We present here a formal foundation for an iterative and incremental approach to constructing and evaluating preference queries. Our main focus is on query modification: ...
JASIS
2000
13 years 8 months ago
2000
In the logical approach to information retrieval (IR), retrieval is considered as uncertain inference. Whereas classical IR models are based on propositional logic, we combine Dat...