在開發高品質且穩定的軟體產品之過程，軟體可靠度(software reliability)扮演著相當重要的角色。在過去三十年來，已有不少學者提出許多可靠度模型，應用於評估軟體產品的可靠度，尤其在國防、醫學及航空上的使用更是不可或缺。基於軟體可靠度模型所發展出來的軟體發行問題，對軟體開發者更是一項重要的議題。本文中我們採用一離散型軟體可靠度模型(discrete software reliability model)及一特定的成本模型(cost model)來探討最佳發行時間，並且有效控制其開發成本。

Software reliability plays an important role for a high-quality and stable software. So reliability is a key feature during the development of a software. In the past three decades, many scholars have made many different models used to assess the reliability of software products. Especially, the method is widely used in the defense industry, medical science and aviation. Release problems based on a certain software reliability model, turns to be a popular issue. In this paper, we discuss a discrete software reliability model and a specific cost model to explore the optimal release time. We introduce an effective control costs for the development of software.

1、中文文獻
[ 1 ] 曾耀德，「離散型式的軟體可靠度模型應用」，國立新竹教育大學應用數學系研究所，碩士學位論文，2010.12
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