Frank W. Vogelezang

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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 Full Function Points method. Because of the absence of benchmark data a conversion formula was(More)
The COSMIC method provides a standardized way of measuring the functional size of software from the functional domains commonly referred to as 'business application' or 'Management Information Systems' (MIS) and 'real-time' software, and hybrids of these. In practice it is often sufficient to measure a functional size approximately. Typical situations where(More)
This article shows the first results of the adoption of COSMIC Full Function Points as a sizing method replacing function point analysis. The main arguments why COSMIC-FFP was chosen will be explained, the transformation plan will be shown together with the first results of the use of COSMIC-FFP. Next to the management requirement that the new functional(More)
We study whether an assumed positively skewed distribution of effort data prevents software estimators to learn over time; leading to increasing differences between planned and actual effort and a deteriorating (worsening) trend on productivity. We analyze data of 25 software releases of one application, collected over a period of six years in a public(More)
In this paper we explore opportunities, challenges, and obstacles that Functional Size Measurement (FSM) experts assume to be in automatically derived functional size, directly from the software project code itself. We designed a structured survey, that was answered by 336 FSM specialists. A majority of the respondents consider FSM to be an important tool(More)
In 1998 NESMA published an alternative approach to establish the functional size of software enhancement projects. The aim of the approach was to be able to use productivity data from software development to estimate software enhancement. This approach has been highly debated, since it is not a pure functional size measurement method in the ISO/IEC 14143(More)
There is no generic framework for estimating the cost of implementation and maintenance of packaged software. Each vendor and implementation partner uses its own proprietary techniques for estimations. This makes it hard to compare estimations from different sources or to build up benchmark data for public reference. A working group from the NESMA(More)
This paper presents 1) an outline of the design of COSMIC, the 2 generation of functional size measurement methods; 2) industry evidence that COSMIC has met its primary design goal to be of practical value in software project performance measurement and estimating; 3) industry evidence of the method’s automation, including full automation with very high(More)