Multi-type Obfuscation Corpus for CrossLingual Plagiarism Detection

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Asghari Habibollah; Mohtaj Salar

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Journal Paper

Paper Information

Journal: International Journal of Information and Communication Technology Research Year:2025 | Volume:17 | Issue:2 Page(s): 59-74

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Information Journal Paper

Title

Multi-type Obfuscation Corpus for CrossLingual Plagiarism Detection

Author(s)

Asghari Habibollah | Mohtaj Salar | Issue Writer Certificate

Keywords

Cross-lingual plagiarism detection

Corpus construction

Obfuscation strategy

Translation obfuscation

Abstract

In recent years, due to the high availability of documents through the Internet, plagiarism is becoming a serious issue in many fields of research. Moreover, the availability of machine translation systems facilitates the re-use of textual content across languages. So, the detection of plagiarism in cross-lingual cases is now of great importance especially when the source and target language are different. Various methods for automatic detection of text reuse have been developed whose objective is to help human experts investigate suspicious documents for plagiarism cases. For evaluating the performance of theses plagiarism detection systems and algorithms, we need to construct plagiarism detection corpora. In this paper, we propose an English-Persian plagiarism detection corpus comprised of different types of paraphrasing. The goal is to simulate what would be done by humans to conceal plagiarized passages after translating the text into the target language. The proposed corpus includes seven types of paraphrasing methods that cover (but not limited to) all of the obfuscation types in the previous works into one integrated CLPD corpus. To evaluate the corpus, an extrinsic evaluation approach has been applied by executing a wide variety of plagiarism detection algorithms as downstream tasks on the proposed corpus. The results show that the performance of the algorithms decreases by increasing the obfuscation complexity.

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