Category: Rayleigh
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The Norden-Rayleigh model: some history
Since it was created in the 1960s, the Norden-Rayleigh model of large project manpower has consistently outperformed, or close runner-up, other models in benchmarks (a large project is one requiring two or more man-years of effort). The accuracy of the Norden-Rayleigh model comes with a big limitation: a crucial input value to the calculation is […]
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Putnam’s software equation debunked
The implementation of a project has a lifecycle that starts and finishes with zero people working on it. Between starting and finishing, the number of staff quickly grows to a peak before slowly declining. In a series of very hard to obtain papers during the early 1960s (chapter 5), Peter Norden created a large project […]