![]() The breakdown to phases is realized in percentages. ![]() It is comprised of three levels:īy means of parametric estimation equations (differentiated according to the different system types) the development effort and the development duration are calculated on the basis of the estimated DSI. Based on the estimated instructions (Delivered Source Instructions DSI), the effort is calculated by taking into consideration both the attempted quality and the productivity factors.ĬoCoMo is based on the traditional top-down programming and concentrates on the number of instructions. Boehm it is a combination of parametric estimation equation and weighting method.
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