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VLDB
2001
ACM
114views Database» more  VLDB 2001»
13 years 10 months ago
Distinct Sampling for Highly-Accurate Answers to Distinct Values Queries and Event Reports
Estimating the number of distinct values is a wellstudied problem, due to its frequent occurrence in queries and its importance in selecting good query plans. Previous work has sh...
Phillip B. Gibbons
ICWS
2009
IEEE
13 years 3 months ago
QoS-Driven Adaptation of BPEL Scenario Execution
BPEL/WSBPEL is the predominant approach for combining individual web services into integrated business processes, allowing for the specification of their sequence, control flow an...
Christos Kareliotis, Costas Vassilakis, Stathis Ro...
EDOC
2011
IEEE
12 years 5 months ago
Modeling Contextual Concerns in Enterprise Architecture
Abstract—Enterprise Architecture approaches are used to provide rigorous descriptions of the organization-wide environment, manage the alignment of deployed services to the organ...
Gonçalo Antunes, José Barateiro, Chr...
EDO
2006
Springer
13 years 9 months ago
An extensible, lightweight architecture for adaptive J2EE applications
Server applications with adaptive behaviors can adapt their functionality in response to environmental changes, and significantly reduce the on-going costs of system deployment an...
Ian Gorton, Yan Liu, Nihar Trivedi
SENSYS
2004
ACM
13 years 11 months ago
Call and response: experiments in sampling the environment
Monitoring of environmental phenomena with embedded networked sensing confronts the challenges of both unpredictable variability in the spatial distribution of phenomena, coupled ...
Maxim A. Batalin, Mohammad H. Rahimi, Yan Yu, Duo ...