Comparison and evaluation of code clone detection techniques and tools: A qualitative approach
Science of Computer Programming
Near-miss function clones in open source software: an empirical study
Journal of Software Maintenance and Evolution: Research and Practice - Working Conference on Reverse Engineering (WCRE 2008)
Are scripting languages really different?
Proceedings of the 4th International Workshop on Software Clones
Scalable and systematic detection of buggy inconsistencies in source code
Proceedings of the ACM international conference on Object oriented programming systems languages and applications
Can I clone this piece of code here?
Proceedings of the 27th IEEE/ACM International Conference on Automated Software Engineering
An empirical study on clone stability
ACM SIGAPP Applied Computing Review
Searching for better configurations: a rigorous approach to clone evaluation
Proceedings of the 2013 9th Joint Meeting on Foundations of Software Engineering
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The new hybrid clone detection tool NICAD combines the strengths and overcomes the limitations of both text-based and AST-based clone detection techniques to yield highly accurate identification of cloned code in software systems. In this paper, we present a first empirical study of function clones in open source software using NICAD. We examine more than 15 open source C and Java systems, including the entire Linux Kernel and Apache httpd, and analyze their use of cloned code in several different dimensions, including language, clone size, clone location and clone density by proportion of cloned functions. We manually verify all detected clones and provide a complete catalogue of different clones in an online repository in a variety of formats. These validated results can be used as a cloning reference for these systems and as a benchmark for evaluating other clone detection tools.