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» On the complexity of stratified logics
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GIS
2004
ACM
16 years 7 months ago
Capturing complex multidimensional data in location-based data warehouses
Motivated by the increasing need to handle complex multidimensional data in location-based data warehouses, this paper proposes a powerful data model that is able to capture the c...
Igor Timko, Torben Bach Pedersen
LPNMR
2009
Springer
16 years 21 days ago
Complexity of the Stable Model Semantics for Queries on Incomplete Databases
Abstract. We study the complexity of consistency checking and query answering on incomplete databases for languages ranging from non-recursive Datalog to disjunctive Datalog with n...
Jos de Bruijn, Stijn Heymans
CONCUR
2007
Springer
16 years 10 days ago
A Marriage of Rely/Guarantee and Separation Logic
Abstract. In the quest for tractable methods for reasoning about concurrent algorithms both rely/guarantee logic and separation logic have made great advances. They both seek to ta...
Viktor Vafeiadis, Matthew J. Parkinson
PODS
1998
ACM
116views Database» more  PODS 1998»
15 years 10 months ago
Complexity of Answering Queries Using Materialized Views
We study the complexity of the problem of answering queries using materialized views. This problem has attracted a lot of attention recently because of its relevance in data integ...
Serge Abiteboul, Oliver M. Duschka
AAAI
2000
15 years 7 months ago
The Complexity of Restricted Consequence Finding and Abduction
We analyze the complexity of propositional kernel resolution (del Val 1999), a general method for obtaining logical consequences in restricted target languages. Different choices ...
Alvaro del Val