Checking plagiarism in e-learning

Chudá, Daniela; Kováčová, Bianka

doi:10.1145/1839379.1839453

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…Plaggie's functionality and graphical user interface is similar to JPlag. SIDplag is based on JPlag, it uses a modified version of GST [11]. ES-Plag is a plagiarism detection tool featured with cosine-based filtering and penalty mechanism to handle aforementioned issues [12].…”

Section: Current Statementioning

confidence: 99%

Abstract Syntax Tree Based Source Code Antiplagiarism System for Large Projects Set

et al. 2020

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The paper deals with the issue of detecting plagiarism in source code, which we unfortunately encounter when teaching subjects dealing with programming and software development. Many students want to simplify the completion of the course and therefore submit modified source codes of their classmates or even those found on the Internet. Some try to modify the source code e.g. by changing the identifiers of classes, methods and variables to different ones, by changing the corresponding loops, by introducing new methods or by changing the order of methods in the source code or in other ways. We focused directly on this problem and designed our own anti-plagiarism system that we describe in this paper. The designed system consists of three parts during which the source code is processed using six designed algorithms. The basis is the processing of the source code and its transformation into an abstract syntax tree, consisting of two types of nodes, which is then vectorized using our modified DECKARD algorithm. The vectors are then clustered and stored in a database from which similar parts of the source code can be searched. The output of the system is then the final report containing a list of matches with similarities of all works that have been added to the database until then. The designed anti-plagiarism system is finally compared with the success of plagiarism detection performed by the two most used anti-plagiarism tools, namely JPlag and MOSS. It is evaluated on assignments elaborated by students from the courses dealing with object-oriented programming at our faculty.

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Section: Current Statementioning

confidence: 99%

Abstract Syntax Tree Based Source Code Antiplagiarism System for Large Projects Set

et al. 2020

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Source code plagiarism detection: The Unix way

Petrík

Chudá

Steinmuller

2017

2017 IEEE 15th International Symposium on Applied Machine Intelligence and Informatics (SAMI)

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Source-code Similarity Detection and Detection Tools Used in Academia

Novak

Joy

Kermek

2019

ACM Trans. Comput. Educ.

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Teachers deal with plagiarism on a regular basis, so they try to prevent and detect plagiarism, a task that is complicated by the large size of some classes. Students who cheat often try to hide their plagiarism (obfuscate), and many different similarity detection engines (often called plagiarism detection tools) have been built to help teachers. This article focuses only on plagiarism detection and presents a detailed systematic review of the field of source-code plagiarism detection in academia. This review gives an overview of definitions of plagiarism, plagiarism detection tools, comparison metrics, obfuscation methods, datasets used for comparison, and algorithm types. Perspectives on the meaning of source-code plagiarism detection in academia are presented, together with categorisations of the available detection tools and analyses of their effectiveness. While writing the review, some interesting insights have been found about metrics and datasets for quantitative tool comparison and categorisation of detection algorithms. Also, existing obfuscation methods classifications have been expanded together with a new definition of “source-code plagiarism detection in academia.”

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Checking plagiarism in e-learning

Cited by 4 publications

References 5 publications

Abstract Syntax Tree Based Source Code Antiplagiarism System for Large Projects Set

Abstract Syntax Tree Based Source Code Antiplagiarism System for Large Projects Set

Source code plagiarism detection: The Unix way

Source-code Similarity Detection and Detection Tools Used in Academia

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