大型開放原始碼軟體類別改變分佈之探討

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姓名

洪東昇(Dong-Sheng Hung) 查詢紙本館藏

畢業系所

軟體工程研究所

論文名稱

大型開放原始碼軟體類別改變分佈之探討
(Class Changes Distribution of Large-Scale Open Source Software)

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至系統瀏覽論文 ( 永不開放)

摘要(中)

軟體在其生命週期中會因為新增功能、維護等原因改變。然而物件導向軟體在發生改變之後，其內部類別與類別之間的關係也會隨之改變。既有的研究成果指出了程式碼經過長時間的演變，會發生Code Decay的現象，亦即程式模組化程度愈來愈不明顯。為了瞭解軟體改變的特性，本論文將探討軟體模組之間的互動關係，建立軟體類別演進歷史，並藉由現有的設計原則(Design Principles)與耦合強度量測方法來探討軟體改變的分佈情形。本論文修正既有軟體度量方法的不足，將其與耦合強度度量方法結合，以更細微的角度去觀察軟體的改變。並且以統計的方式來說明軟體改變的現象。

摘要(英)

Classes in object-oriented software change dynamically with newly added requirements of bugs-fixing. However, with the evolution of software, code usually ends up with a state, called code decay, which is a result of the problem arising from the modularity inside the software. This thesis builds the change history of software classes, and investigates the distribution of software changes based on existing design principles and coupling strength metrics. The A vs. I graph is adopted in this thesis to observe the changes of software.

關鍵字(中)

★ 軟體品質
★ 軟體設計原則
★ 耦合強度

關鍵字(英)

★ Software Quality
★ Software Design Principle
★ Coupling Strength

論文目次

摘要 i
Abstract ii
誌謝 iii
目錄 iv
圖目錄 v
表目錄 vi
第一章緒論 1
1.1 引言與動機 1
1.2 目的 2
1.3 論文架構 2
第二章背景知識介紹 4
2.1 AMRL Coupling Strength Metrics 4
2.2 Extended Hitz and Montazeri’s Coupling Measurement Framework 5
2.3 The Stability Principle (SDP) 6
2.4 The Stable Abstractions Principle (SAP) 8
2.5 Change Management System (Git) 12
第三章軟體專案演變歷史之追溯與建立 14
3.1 分析開放原始碼專案之版本變更紀錄 14
3.2 建立類別演變歷史與下載程式碼 16
第四章 A-I Metrics之修正與調整 17
4.1 Abstractness Metrics之修正 17
4.2 Stability Metrics之調整 17
第五章系統設計與實作 20
5.1 系統架構 20
5.2 A-I Evolution Tracker 21
5.3 A-I Calculator 23
5.4 Analysis 24
第六章案例探討 25
6.1 實驗對象 25
6.2 A vs. I Graph之比較 25
6.3 A-I Distance之平均數與變異數比較 26
6.4 A-I Distance分佈之比較 27
第七章結論 32
參考文獻 33

參考文獻

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[15] The CVS Team, “Concurrent Versions System,” http://savannah.nongnu.org/projects/cvs
[16] Apache Software Foundation, “Apache Subversion,” http://subversion.apache.org/
[17] Linus Torvalds, “Git,” http://git-scm.com/
[18] R.C. Martin, “Design principles and design patterns,” Object Mentor: 1-34, 2000
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[20] 陳石佳，”AMRL耦合強度度量方法; AMRL Coupling Strength Metrics”，國立中央大學碩士論文，2013
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指導教授

李允中(Jonathan Lee)

審核日期

2013-7-18

推文