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Code clones are identical or similar code segments. The wide existence of code clones can increase the cost of maintenance and jeopardise the quality of software. The research community has developed many techniques to detect code clones,…

Software Engineering · Computer Science 2022-04-12 Wahidur Rahman , Yisen Xu , Fan Pu , Jifeng Xuan , Xiangyang Jia , Michail Basios , Leslie Kanthan , Lingbo Li , Fan Wu , Baowen Xu

Clone-and-own is a typical code reuse approach because of its simplicity and efficiency. Cloned software components are maintained independently by a new owner. These clone-and-own operations can be occurred sequentially, that is, cloned…

Software Engineering · Computer Science 2022-04-14 Hideaki Hata , Takashi Ishio

Code cloning is not only assumed to inflate maintenance costs but also considered defect-prone as inconsistent changes to code duplicates can lead to unexpected behavior. Consequently, the identification of duplicated code, clone detection,…

Software Engineering · Computer Science 2017-11-15 Elmar Juergens , Florian Deissenboeck , Benjamin Hummel , Stefan Wagner

This paper explores the complexities of automatic detection of software similarities, in relation to the unique challenges of digital artifacts, and introduces Project Martial, an open-source software solution for detecting code similarity.…

Software Engineering · Computer Science 2026-01-05 Rares Folea , Emil Slusanschi

Code clone detection plays a critical role in software maintenance and vulnerability analysis. Substantial methods have been proposed to detect code clones. However, they struggle to extract high-level program semantics directly from a…

Software Engineering · Computer Science 2026-02-06 Changguo Jia , Yi Zhan , Tianqi Zhao , Hengzhi Ye , Minghui Zhou

Code clones are duplicate code fragments that share (nearly) similar syntax or semantics. Code clone detection plays an important role in software maintenance, code refactoring, and reuse. A substantial amount of research has been conducted…

Software Engineering · Computer Science 2020-11-26 Nikita Mehrotra , Navdha Agarwal , Piyush Gupta , Saket Anand , David Lo , Rahul Purandare

Plagiarism is a commonly encountered problem in the academia. While there are several tools and techniques to efficiently determine plagiarism in text, the same cannot be said about source code plagiarism. To make the existing systems more…

Information Retrieval · Computer Science 2019-02-08 Vasishtha Sriram Jayapati , Ajay Venkitaraman

Code cloning is a common practice in software development, but it poses significant security risks by propagating vulnerabilities across cloned segments. To address this challenge, we introduce srcVul, a scalable, precise detection approach…

Software Engineering · Computer Science 2025-05-06 Hakam Alomari , Christopher Vendome , Hilal Gyawali

Source code plagiarism detection is a problem that has been addressed several times before; and several tools have been developed for that purpose. In this research project we investigated a set of possible disguises that can be…

Other Computer Science · Computer Science 2017-11-08 Hatem A. Mahmoud

Classic clone detection approaches are hardly capable of finding redundant code that has been developed independently, i.e., is not the result of copy&paste. To automatically detect such functionally similar code of independent origin, we…

Software Engineering · Computer Science 2018-01-19 Florian Deissenboeck , Lars Heinemann , Benjamin Hummel , Stefan Wagner

The reuse of code fragments by copying and pasting is widely practiced in software development and results in code clones. Cloning is considered an anti-pattern as it negatively affects program correctness and increases maintenance efforts.…

Software Engineering · Computer Science 2018-06-26 Hannes Thaller , Rudolf Ramler , Josef Pichler , Alexander Egyed

Code cloning, the duplication of code fragments, is common in software development. While some reuse aids productivity, excessive cloning hurts maintainability and introduces bugs. Hence, automatic code clone detection is vital. Meanwhile,…

Software Engineering · Computer Science 2023-08-08 Shihan Dou , Junjie Shan , Haoxiang Jia , Wenhao Deng , Zhiheng Xi , Wei He , Yueming Wu , Tao Gui , Yang Liu , Xuanjing Huang

Maintenance is a dominant component of software cost, and localizing reported defects is a significant component of maintenance. We propose a scalable approach that leverages the natural language present in both defect reports and source…

Software Engineering · Computer Science 2012-11-14 Zachary P. Fry , Westley Weimer

Detecting code clones is relevant to software maintenance and code refactoring. This challenge still presents unresolved cases, mainly when structural similarity does not reflect functional equivalence, though recent code models show…

Software Engineering · Computer Science 2025-06-16 Jorge Martinez-Gil

Software systems are getting more complex as the system grows where maintaining such system is a primary concern for the industry. Code clone is one of the factors making software maintenance more difficult. It is a process of replicating…

Software Engineering · Computer Science 2012-05-28 Md. Monzur Morshed , Md. Arifur Rahman , Salah Uddin Ahmed

Having similar code fragments, also called clones, in software systems can lead to unnecessary comprehension, review and change efforts. Syntactically similar clones can often be encountered in practice. The same is not clear for only…

Software Engineering · Computer Science 2018-05-23 Verena Käfer , Stefan Wagner , Rainer Koschke

Copy & paste is a widespread practice when developing software and, thus, duplicated and subsequently modified code occurs frequently in software projects. Since such code clones, i.e., identical or similar fragments of code, can bloat…

Software Engineering · Computer Science 2026-02-03 Thomas S. Heinze , André Schäfer , Wolfram Amme

Reusing code can produce duplicate or near-duplicate code clones in code repositories. Current code clone detection techniques, like Program Dependence Graphs, rely on code structure and their dependencies to detect clones. These techniques…

Software Engineering · Computer Science 2020-06-26 Sandeep Kaur Kuttal , Akash Ghosh

Today most developers utilize source code written by other parties. Because the code is modified frequently, the developers need to grasp the impact of the modification repeatedly. A call graph and especially its special type, a call path,…

Data Structures and Algorithms · Computer Science 2016-02-15 Koji Yamamoto , Taka Matsutsuka

Code clones are similar code fragments that often arise from copy-and-paste programming. Neural networks can classify pairs of code fragments as clone/not-clone with high accuracy. However, finding clones in industrial-scale code needs a…

Software Engineering · Computer Science 2025-04-28 Gul Aftab Ahmed , Muslim Chochlov , Abdul Razzaq , James Vincent Patten , Yuanhua Han , Guoxian Lu , Jim Buckley , David Gregg