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» Minimal Contraction of Preference Relations
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IDEAS
2003
IEEE
122views Database» more  IDEAS 2003»
14 years 2 months ago
Preferred Repairs for Inconsistent Databases
The objective of this paper is to investigate the problems related to the extensional integration of information sources. In particular, we propose an approach for managing incons...
Sergio Greco, Cristina Sirangelo, Irina Trubitsyna...
LPAR
2004
Springer
14 years 3 months ago
Weighted Answer Sets and Applications in Intelligence Analysis
The extended answer set semantics for simple logic programs, i.e. programs with only classical negation, allows for the defeat of rules to resolve contradictions. In addition, a pa...
Davy Van Nieuwenborgh, Stijn Heymans, Dirk Vermeir
JELIA
2004
Springer
14 years 3 months ago
Hierarchical Decision Making by Autonomous Agents
Abstract. Often, decision making involves autonomous agents that are structured in a complex hierarchy, representing e.g. authority. Typically the agents share the same body of kno...
Stijn Heymans, Davy Van Nieuwenborgh, Dirk Vermeir
SIGMOD
2002
ACM
112views Database» more  SIGMOD 2002»
14 years 9 months ago
Minimal probing: supporting expensive predicates for top-k queries
This paper addresses the problem of evaluating ranked top-? queries with expensive predicates. As major DBMSs now all support expensive user-defined predicates for Boolean queries...
Kevin Chen-Chuan Chang, Seung-won Hwang
SIGCOMM
2006
ACM
14 years 3 months ago
Minimizing churn in distributed systems
A pervasive requirement of distributed systems is to deal with churn — change in the set of participating nodes due to joins, graceful leaves, and failures. A high churn rate ca...
Brighten Godfrey, Scott Shenker, Ion Stoica