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PODS
2012
ACM
253views Database» more  PODS 2012»
13 years 9 days ago
Local transformations and conjunctive-query equivalence
Over the past several decades, the study of conjunctive queries has occupied a central place in the theory and practice of database systems. In recent years, conjunctive queries h...
Ronald Fagin, Phokion G. Kolaitis
EDBT
2012
ACM
228views Database» more  EDBT 2012»
13 years 7 days ago
Towards scalable data integration under constraints
In this paper we consider the problem of answering queries using views, with or without ontological constraints, which is important for data integration, query optimization, and d...
George Konstantinidis, José Luis Ambite
IPSN
2009
Springer
15 years 4 months ago
Recovering temporal integrity with Data Driven Time Synchronization
Data Driven Time Synchronization (DDTS) provides synchronization across sensors by using underlying characteristics of data collected by an embedded sensing system. We apply the c...
Martin Lukac, Paul Davis, Robert Clayton, Deborah ...
JMM
2007
107views more  JMM 2007»
14 years 9 months ago
TSFD: Two Stage Frame Dropping for Scalable Video Transmission over Data Networks
Scalable video transmission is used to adjust the rate of video depending on the level of network congestion. Previous studies on scalable video transmission of MPEG over ATM ABR ...
Bing Zheng, Mohammed Atiquzzaman
OWLED
2007
14 years 11 months ago
Ontologies in OWL for Rapid Enterprise Integration
Ontologies enable explicit expression of collective concepts and support Machine-to-Machine (M2M) interactions at the semantic level. Ontologies expressed in a standard language, s...
Suzette Stoutenburg, Leo Obrst, Deborah Nichols, P...