Estimation of software projects effort based on function point

摘要

With the development of software industry, software estimation and measurement is catching much more concern. Scale increasing in applications and a variety of programming languages using at the same time, manual measurement based on the LOC (Line of Code) cannot meet the estimating requirements. The emergence of Function Point resolves these difficult issues. In order to obtain the software effort, we propose an estimating method for software effort based on function point. It helps to estimate software effort more accurately without considering the languages or developing environment you choose. Firstly, use actual project records to obtain the linear relation between function point and software effort. Then determine the parameters of linear equations by maximum likelihood estimating method. Finally, you can get the effort of the project according to this equation with the function point given. After obtaining the software effort, project manager can arrange the project progress, control the cost and ensure the quality more accurately.