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ICDT
2009
ACM
147views Database» more  ICDT 2009»
16 years 7 months ago
The average-case complexity of counting distinct elements
We continue the study of approximating the number of distinct elements in a data stream of length n to within a (1? ) factor. It is known that if the stream may consist of arbitra...
David P. Woodruff
PRDC
2009
IEEE
16 years 1 months ago
Quantifying Criticality of Dependability-Related IT Organization Processes in CobiT
—With ever-growing complexity of computer and communication systems analytical methods do not scale, especially with respect to dependability assessment of information technology...
Tobias Goldschmidt, Andreas Dittrich, Miroslaw Mal...
NOMS
2008
IEEE
123views Communications» more  NOMS 2008»
16 years 1 months ago
Model-based management of security services in complex network environments
Abstract—The security mechanisms employed in current networked environments are increasingly complex, and their configuration management has an important role for the protection...
João Porto de Albuquerque, Heiko Krumm, Pau...
ISPASS
2007
IEEE
16 years 1 months ago
PTLsim: A Cycle Accurate Full System x86-64 Microarchitectural Simulator
In this paper, we introduce PTLsim, a cycle accurate full system x86-64 microprocessor simulator and virtual machine. PTLsim models a modern superscalar out of order x86-64 proces...
Matt T. Yourst
ER
2007
Springer
157views Database» more  ER 2007»
16 years 1 months ago
Perceived vs. Measured Quality of Conceptual Schemas: An Experimental Comparison
Frequently the behaviour of an information system is functionally correct, but it does not meet some quality criteria, such as completeness, consistency, and usability. One way to...
Samira Si-Said Cherfi, Jacky Akoka, Isabelle Comyn...