Change, similarity and redundancy in software systems

软件系统中的变化、相似性和冗余

• 批准号: 386505-2010
• 负责人: Roy, ChanchalKumar
• 金额: $ 1.46万
• 依托单位: University of Saskatchewan
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=550463
• 关键词: Change; similarity; redundancy; software; systems

Studies show that up to 80% of software development cost is spent on software maintenance. One aspect of software maintenance is dealing with duplicated code. Copy-and-paste of code sections with or without minor changes is a common software development practice, and over time large software systems develop many such "software clones". While such cloning is often intentional and can be useful in many ways, it can cause significant problems in the maintenance of large software systems because it increases the risk of update anomalies, increases program size and complexity, and contributes to high maintenance costs. Clone detection is thus an important problem in software maintenance research, and serves as the basis of a wide range of software engineering tasks. In the last several years, we have significantly advanced the state-of-the-art in the detection and analysis of near-miss software clones, those where minor additions, deletions and modifications have been made in the copied fragments.

研究表明，软件开发成本的80%以上都花在了软件维护上。软件维护的一个方面是处理重复的代码。带有或不带有微小更改的代码段的复制和粘贴是常见的软件开发实践，并且随着时间的推移，大型软件系统开发了许多这样的“软件克隆”。虽然这种克隆通常是故意的，并且在许多方面都很有用，但它可能会在大型软件系统的维护中造成重大问题，因为它增加了更新异常的风险，增加了程序大小和复杂性，并导致高维护成本。因此，克隆检测是软件维护研究中的一个重要问题，并作为广泛的软件工程任务的基础。在过去的几年中，我们已经显着先进的国家的最先进的检测和分析接近错过的软件克隆，那些微小的添加，删除和修改已在复制的片段。