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    block this user Frank Vogelezang Trusted member

    Senior professional / frank.vogelezang@ordina.nl

    Ordina, Pricing Office
    Sogeti - Sizing, Estimating & Control
    NESMA - Counting Practices Committee
    COSMIC - Measurement Practices Committee

    Applicability of COSMIC in an administrative environment: Experiences of an early adopter

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    Rabobank is reshaping its systems portfolio of Rabobank from dedicated product systems to a network of generic services with a shared data source. In this environment Function Point Analysis no longer fits the sizing needs. An alternative was found in the COSMIC method. Because of the absence of benchmark data a conversion formula was derived for projects that were measurable in both COSMIC and Function Point Analysis. This conversion formula now reads as: Y (cfsu) = -87 + 1,2 X (fp) The correlation coefficient for this conversion formula is 0,99 and the standard deviation in the difference in the Y-value is 59. To support the estimating process in early stages of systems development the locally calibrated approximate version of COSMIC Full Function Points was derived from the first set of measurements. Our version shows very good resemblance to the version presented in the Measurement Manual. Because these figures were derived in a very different environment this might be an indication that these figures have a more general applicability.

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    Description

    Title : Applicability of COSMIC in an administrative environment: Experiences of an early adopter
    Author(s) : Frank Vogelezang, Arlan Lesterhuis
    Abstract : Rabobank is reshaping its systems portfolio of Rabobank from dedicated product systems to a network of generic services with a shared data source. In this environment Function Point Analysis no longer fits the sizing needs. An alternative was found in the COSMIC method. Because of the absence of benchmark data a conversion formula was derived for projects that were measurable in both COSMIC and Function Point Analysis. This conversion formula now reads as: Y (cfsu) = -87 + 1,2 X (fp) The correlation coefficient for this conversion formula is 0,99 and the standard deviation in the difference in the Y-value is 59. To support the estimating process in early stages of systems development the locally calibrated approximate version of COSMIC Full Function Points was derived from the first set of measurements. Our version shows very good resemblance to the version presented in the Measurement Manual. Because these figures were derived in a very different environment this might be an indication that these figures have a more general applicability.
    Keywords : COSMIC

    Subject : Implementation of COSMIC in an administrative environment
    Area : Computer Science
    Language : English
    Year : 2003

    Affiliations Ordina, Pricing Office
    Sogeti - Sizing, Estimating & Control
    COSMIC - Measurement Practices Committee
    Conference_title : International Worshop on Software Measurement (IWSM)
    Institution : Rabobank
    Url : http://metrieken.sogeti.nl/Images/IWSM2003%20Applicability%20of%20COSMIC%20Full%20Function%20Points%20in%20an%20administrative%20environment%20-%20Experiences%20of%20an%20early%20adopter_tcm158-35888.pdf
    Doi : 10.1.1.144.2035

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