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» A System for Semantic Query Optimization
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DEBU
2000
147views more  DEBU 2000»
13 years 9 months ago
XJoin: A Reactively-Scheduled Pipelined Join Operator
Wide-area distribution raises significant performance problems for traditional query processing techniques as data access becomes less predictable due to link congestion, load imb...
Tolga Urhan, Michael J. Franklin
DBISP2P
2003
Springer
105views Database» more  DBISP2P 2003»
14 years 2 months ago
Distributed Queries and Query Optimization in Schema-Based P2P-Systems
Databases have employed a schema-based approach to store and retrieve structured data for decades. For peer-to-peer (P2P) networks, similar approaches are just beginning to emerge,...
Ingo Brunkhorst, Hadhami Dhraief, Alfons Kemper, W...
DLOG
2007
13 years 11 months ago
Optimizing Tableau Reasoning in ALC Extended with Uncertainty
Abstract. There has been an increased interest in recent years to incorporate uncertainty in Description Logics (DLs), and a number of proposals have been put forward for modeling ...
Volker Haarslev, Hsueh-Ieng Pai, Nematollaah Shiri
SIGMOD
2007
ACM
124views Database» more  SIGMOD 2007»
14 years 9 months ago
Query suspend and resume
Suppose a long-running analytical query is executing on a database server and has been allocated a large amount of physical memory. A high-priority task comes in and we need to ru...
Badrish Chandramouli, Christopher N. Bond, Shivnat...
ESWS
2008
Springer
13 years 11 months ago
Improving Interoperability Using Query Interpretation in Semantic Vector Spaces
Abstract. In semantic web applications where query initiators and information providers do not necessarily share the same ontology, semantic interoperability generally relies on on...
Anthony Ventresque, Sylvie Cazalens, Philippe Lama...