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- W58033983 abstract "A new scheme for dependability assurance in digital systems that allows highly selective use of redundancy with low additional overhead is introduced. This scheme, which can be described as data-driven, contrasts with and complements the conventional structure-driven and function-driven approaches to dependability procurement for digital systems. The proposed approach is based on attaching a dependability tag (d-tag) to each data object and updating pertinent d-tag values as a computation unfolds. Normal operations on data objects tend to lower d-tag values while comparisons and voting on redundant versions of a result work in the opposite direction. Judicious intermixing of dependability-lowering and dependability-raising operations, driven dynamically by the dependability requirements for various data objects, can lead to a desired overall dependability for computation results. Following an exposition of basic concepts of the proposed method with the assumption of perfect d-tags and operations, various issues in the formulation of a strategy for dealing with erroneous d-tags and imperfect operations are outlined. Applications of the proposed data-driven approach in connection with data and design diversity are presented through simple examples. Some benefits of the proposed scheme for fault tolerance in a class of critical systems are discussed." @default.
- W58033983 created "2016-06-24" @default.
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- W58033983 date "1991-01-01" @default.
- W58033983 modified "2023-09-27" @default.
- W58033983 title "A Data-Driven Dependability Assurance Scheme with Applications to Data and Design Diversity" @default.
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- W58033983 doi "https://doi.org/10.1007/978-3-7091-9123-1_12" @default.
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