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The authors report the results of an empirical research project on the consistency and limitations of the number of function points as an a priori measure of system size rather than the traditional lines-of-code measure. They conclude that function points are a more consistent a priori measure of system size. The results also indicate that the function-point estimate of size is lower for analysts experienced both in software development and in function-point estimation.>
Low et al. (Mon,) studied this question.