12/11/2022 0 Comments Does cocomo model workBe sure to review this material carefully before attempting to apply this technique.īoehm, Barry. The COCOMO Estimating Model is based on some specific estimating assumptions and definitions, and is documented extensively in the literature. The detailed COCOMO model applies these same cost drivers to each sub-phase of development. The intermediate COCOMO model takes the basic COCOMO model as its starting point and then multiplies the basic estimate by an effort adjustment factor which is calculated as the product of 15 multipliers (cost drivers) which take into account factors such as required product reliability, database size, execution and storage constraints, personnel aptitude, and the use of software tools. The basic equations are intended to give an order of magnitude estimation. The basic COCOMO model estimates effort solely as a function of the estimated delivered lines of code in the target product. COCOMO II model to develop estimates, perform trade studies, and do other useful work (justifying the purchase of software tools, performing risk analysis. Each of the models is based on the total estimated lines of code expressed in KDSI (one thousand delivered source instructions). ![]() There is a hierarchy of models within the COCOMO family. However, it is not known whether this claim has been independently validated. It has been claimed that if the number of lines of code is reasonably well-estimated and if the multipliers are chosen correctly, the model is accurate to within 20 percent of the actual costs 80 percent of the time, for that class of projects for which the model is calibrated. The multipliers themselves can be tuned depending on numerous other factors. ![]() ![]() The model uses effort multipliers to refine the estimates and tune the software equations and the resulting estimates. COCOMO is a mathematical software cost estimation model developed between 19, that uses micro and macro estimation techniques to estimate the cost and effort required for the software development phases.īased upon studies of numerous projects, the COCOMO equations were developed to estimate the effort and schedule based on the estimate of the delivered lines of source code.
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