PUMA
Istituto di Scienza e Tecnologie dell'Informazione     
Di Giandomenico F., Strigini L. Adjudicators for diverse-redundant components : survey and optimal adjudicator. Sara' pubblicato successivamente in PDCS Esprit Basic Research Action, technical report n. 24. Internal note IEI-B4-11, 1990.
 
 
Abstract
(English)
In fault-tolerant components realized using replication, several alternate results are produced, from which a single correct result must be derived. This is done by a mechanism, that we call an adjudicator (a concept more general than a voter), which uses as its inputs the individual results produced by the replicated subcomponents comprising the redundant component. This paper gives a rigourous definition of the adjudication problem, summarizes the existing literature on the topic, and investigates the use of probabilistic knowledge about errors/faults in the subcomponents of a fault tolerant component to obtain good adjudication functions. The concept of an optimal adjudicator is introduced and discussed.
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