Embedded mode projects have tight time constraints, strong coupling between software, hardware, regulations, and operational procedures. Semidetached mode projects have a mixture of experienced and inexperienced staff, with limited experience of the application type and probably unfamiliar with some of the aspects of the project. Organic mode projects require relatively small teams working in familiar environments on familiar projects. For each class an estimate for effort and duration can be calculated as a function of thousands of delivered source instructions (kdsi). The basic model is intended to give an order of magnitude estimate of cost based on three classes of project: organic mode, semidetached mode, embedded mode. An algorithmic software cost estimation model devised by Barry Boehm. COCOMO (or CoCoMo) Acronym for constructive cost model.
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