BUAA-AntiPlagiarism: A system to detect plagiarism for C source code

Plagiarism in programming assignments is a widespread problem in educational community, which has motivated the need of a more efficient, robust and faster detection approach than the manual checking. The BUAA-AntiPlagiarism system, introduced in this paper, detects source-code plagiarism through the analysis of program's syntax structure. The output of the system is a group of clusters of all suspicious plagiarized programs after calculating the pair wise similarities. This system consists of four parts: abstract syntax tree generation, fingerprints representation, similarity measurement and clustering method. By testing a set of submissions, the comparative evaluation shows that BUAA-AntiPlagiarism system has better performance than Jplag, a famous plagiarism detection system.