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- W2120138410 abstract "AbstractThe usage control (UCON) model demands for continuous control over objects of a system. Access decisions are done several times within a usage session and are performed on the basis of mutable attributes. Values of attributes in modern highly-dynamic and distributed systems sometimes are not up-to-date, because attributes may be updated by several entities and reside outside the system domain. Thus, the access decisions about a usage session are made under uncertainties, while existing usage control approaches are based on the assumption that all attributes are up-to-date.In this paper we propose an approach which helps to make a rational access decision even if some uncertainty presents. The proposed approach uses the continuous-time Markov chains (CTMC) in order to compute the probability of unnoticed changes of attributes and risk analysis for making a decision.Keywordsusage controlfreshness of attributesriskcontinuous-time Markov chains" @default.
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- W2120138410 date "2011-01-01" @default.
- W2120138410 modified "2023-09-23" @default.
- W2120138410 title "Influence of Attribute Freshness on Decision Making in Usage Control" @default.
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- W2120138410 doi "https://doi.org/10.1007/978-3-642-22444-7_3" @default.
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