為了增加軟體的品質以及可維護性，開發者需依循著低耦合力高內聚力的設計準則撰寫程式。然而，在軟體開發過程中，因應使用者需求不斷變更，進而壓縮測試所需的時間，如何減少測試所需耗費的成本成為一項重要的議題。透過提升軟體品質量測的準確性，評估、修改模組之間的相依性及其複雜度，以促進程式的可讀性並減少維護所需成本。根據研究指出，軟體複雜度量測中，耦合力為最能顯著影響程式設計整體品質的特徵，並能獲得更精準的故障預測；此外，因物件導向程式設計的重要性與可延伸性，許多學者紛紛提出相關的程式語言之測量方法。然而，目前尚未針對耦合力量測中須考慮哪些物件導向程式特性進行規範，因此，在過去的研究中，存在許多定義尚不明確的方法。本篇論文的目的是提出一耦合力量測方法，考量物件導向程式設計語言中相關細節，並提供開發者一撰寫程式碼的規範與建議。實驗結果顯示，我們的方法可達到更精準的預測軟體品質，並透過撰寫準則修改原始程式碼可有效降低其耦合力。

There is an increasing need for software quality and maintainability, where developers should implement the principles of low coupling and high cohesion programming design. However, in the software development process, due to the different variation in users’ specifications, code design is usually expresses the time of the testing phases. Hence, how to reduce the testing effort input is one of the most import topics. Through promoting the accuracy of software measurement, we can evaluate and modify the dependence and complexity between modules, which facilitate the readability of programs and reduce the maintenance work. According to previous research, the most significant characteristics that can influence the whole quality of the design is coupling; coupling can be obtained more precisely to predict fault-phone classes in object-oriented code; because of the reusability and extendibility of object-oriented programming (OOP), numerous measurement methods are proposed. However, there is no standard to claim what kind of characteristics OOP should contain in coupling metrics; many existing measures present ambiguity in their definitions. The aim of this study is to propose a coupling measurement approach, which offers greater detail about the characteristics of OOP, and provide coding standards and recommendations for developers to design a maintainable program. The results of these experiments show that our derived metrics can predict the software quality well and reduce the coupling of a program though the principles we proposed.

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