Software Instability Analysis

软件不稳定性分析

• 批准号: 0234603
• 负责人: Emmet Whitehead
• 金额: $ 39万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-09-15 至 2006-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0234603&HistoricalAwards=false
• 关键词: Software; Instability; Analysis

CCR-0234603Whitehead, Emmet JamesUniv. of Calif. - Santa CruzSoftware today is tightly woven into the daily fabric of business, government, and homes. This software is maintained for many years to accommodate changing operational environments and to add new capabilities. An increasing body of evidence shows that the structure of software decays over time, leading to a cluster of related problems: changes take longer to implement since they touch more files, modular boundaries soften, and large recent changes are a good predictor of software faults.This project aims to improve the effectiveness of perfective software maintenance techniques by developing a novel tool called IVA (Instability Visualization and Analysis) that allows the rapid identification and ranking of unstable code regions, so they can be redesigned first. The concept of an instability region is introduced as a set of dependent software fragments that have been frequently modified together, and the project uses analysis and visualization techniques to show the locations and relative severity of these instabilities utilizing Instability Identification, Analysis, and Visualization. It is expected that this approach will dramatically reduce the time required to identify and prioritize instability regions. The project takes full advantage of the NASA testbed to perform activities related to validating the correctness, usability, scalability, and performance of the IVA system. Furthermore, the project will validate that IVA would have provided much earlier identification of code regions that were ultimately refactored. In addition, IVA will be incorporated in undergraduate and graduate teaching and research.

CCR-0234603怀特黑德，埃米特詹姆斯大学的Calif。- Santa CruzSoftware今天紧密地编织在商业、政府和家庭的日常结构中。该软件已维护多年，以适应不断变化的操作环境并增加新的功能。越来越多的证据表明，软件的结构随着时间的推移而衰退，导致一系列相关的问题：更改需要更长的时间来实现，因为它们涉及更多的文件，模块边界软化，本计画旨在开发一种新的软体维护工具IVA，以提升软体维护技术的效能（不稳定性可视化和分析），允许快速识别和排名不稳定的代码区域，因此可以首先重新设计它们。不稳定区域的概念被引入作为一组依赖的软件片段，这些片段经常一起修改，该项目使用分析和可视化技术来显示这些不稳定性的位置和相对严重程度，利用不稳定性识别，分析和可视化。 预计这种方法将大大减少识别和优先考虑不稳定地区所需的时间。该项目充分利用了NASA的测试平台来执行与验证IVA系统的正确性、可用性、可扩展性和性能相关的活动。此外，该项目还将验证IVA是否能够更早地识别最终重构的代码区域。此外，IVA将被纳入本科和研究生的教学和研究。