Testing reliability of raster - report of experiment with Kerckhoffs students

E. Vriezekolk

    Research output: Book/ReportReportProfessional

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    We are working on the development of an availability risk assessment method for telecommunication services, called Raster. From previous research we know that Raster can produce assessments with reasonable effort, but we have not yet shown that its results are reliable (repeatable) and accurate (correct). In this experiment we tested reliability, as without reliability it is difficult to test and improve accuracy. By reliability of a method we mean that its results are not dependent on chance or unknown circumstances. The results of a method may vary due to many factors. The goal of our experiment was to test the variation due to factors inherent in the Raster method itself. We identified and analysed sources of variation, and explain our mitigations. From the results we were able to identify three sources of variation. Two of these could be attributed to the experiment setup, but is due to ambiguity in the Raster method. We conclude with proposals for improvement of Raster.
    Original languageUndefined
    Place of PublicationEnschede
    PublisherCentre for Telematics and Information Technology (CTIT)
    Number of pages39
    Publication statusPublished - Mar 2014

    Publication series

    NameCTIT Technical Report Series
    PublisherUniversity of Twente, Centre for Telematics and Information Technology (CTIT)
    ISSN (Print)1381-3625


    • telecommunication services
    • Availability
    • IR-89859
    • METIS-304023
    • SCS-Cybersecurity
    • EWI-24582

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