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IS
2002
14 years 9 months ago
Pushing extrema aggregates to optimize logic queries
In this paper, we explore the possibility of transforming queries with minimum and maximum predicates into equivalent queries that can be computed more efficiently. The main contr...
Filippo Furfaro, Sergio Greco, Sumit Ganguly, Carl...
CAV
2004
Springer
151views Hardware» more  CAV 2004»
15 years 1 months ago
QB or Not QB: An Efficient Execution Verification Tool for Memory Orderings
We study the problem of formally verifying shared memory multiprocessor executions against memory consistency models--an important step during post-silicon verification of multipro...
Ganesh Gopalakrishnan, Yue Yang, Hemanthkumar Siva...
77
Voted
SIGMOD
1999
ACM
132views Database» more  SIGMOD 1999»
15 years 1 months ago
Mind Your Vocabulary: Query Mapping Across Heterogeneous Information Sources
In this paper we present a mechanism for translating constraint queries, i.e., Boolean expressions of constraints, across heterogeneous information sources. Integrating such syste...
Kevin Chen-Chuan Chang, Hector Garcia-Molina
ICLP
2005
Springer
15 years 3 months ago
Guard and Continuation Optimization for Occurrence Representations of CHR
Constraint Handling Rules (CHR) is a high-level rule-based language extension, commonly embedded in Prolog. We introduce a new occurrence representation of CHR programs, and a new ...
Jon Sneyers, Tom Schrijvers, Bart Demoen
93
Voted
JELIA
2004
Springer
15 years 2 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