軟體專案人力的估算為專案管理中一項重要的活動。為了要在軟體專案的早期預測出所需要的人力，本研究提出從高階分工結構圖（WBS）估算人力的流程與方法以及一個結合WBS人力規劃因子與專案工作配置（Project Configuration）的基本因子之預估模型。專案可根據人力估算的流程分析專案的WBS，並使用預估模型更準確的估算出專案的人力。 本研究實做之專案配置人力估算服務和使用者案例功能點分析服務，可自動化使用者案例功能點計算與WBS人力的估算的過程，並可結合迴歸分析服務，有效的以專案的歷史資料來估算專案的人力。 Software effort estimation is an important activity for effective project management. To predict the required effort in the early phase of the software project, this paper proposes（1）a WBS analysis process and method to estimate project effort from high level WBS and（2）an modified effort estimation model by utilizing four task assignment factors, team size, concurrency, intensity, fragmentation and one new factor, the WBS effort. In the present study, these five factors are shown to improve the predictive ability of the original task assignment effort estimation model. For the data examined, our model is shown to have goodness of fit and quality of estimation superior to that of the original one.
