An Adaptive Image-based Plagiarism Detection Approach

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2018
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Proceedings of the 18th ACM/IEEE Joint Conference on Digital Libraries : JCDL '18. New York, USA: ACM Press, 2018, pp. 131-140. ISBN 978-1-4503-5178-2. Available under: doi: 10.1145/3197026.3197042
Zusammenfassung

Identifying plagiarized content is a crucial task for educational and research institutions, funding agencies, and academic publishers. Plagiarism detection systems available for productive use reliably identify copied text, or near-copies of text, but often fail to detect disguised forms of academic plagiarism, such as paraphrases, translations, and idea plagiarism. To improve the detection capabilities for disguised forms of academic plagiarism, we analyze the images in academic documents as text-independent features. We propose an adaptive, scalable, and extensible image-based plagiarism detection approach suitable for analyzing a wide range of image similarities that we observed in academic documents. The proposed detection approach integrates established image analysis methods, such as perceptual hashing, with newly developed similarity assessments for images, such as ratio hashing and position-aware OCR text matching. We evaluate our approach using 15 image pairs that are representative of the spectrum of image similarity we observed in alleged and confirmed cases of academic plagiarism. We embed the test cases in a collection of 4,500 related images from academic texts. Our detection approach achieved a recall of 0.73 and a precision of 1. These results indicate that our image-based approach can complement other content-based feature analysis approaches to retrieve potential source documents for suspiciously similar content from large collections. We provide our code as open source to facilitate future research on image-based plagiarism detection.

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004 Informatik
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Image Analysis, Plagiarism Detection, Academic Publishing
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JCDL '18 : 18th ACM/IEEE Joint Conference on Digital Libraries, 3. Juni 2018 - 7. Juni 2018, Fort Worth, Texas, USA
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ISO 690MEUSCHKE, Norman, Christopher GONDEK, Daniel SEEBACHER, Corinna BREITINGER, Daniel A. KEIM, Bela GIPP, 2018. An Adaptive Image-based Plagiarism Detection Approach. JCDL '18 : 18th ACM/IEEE Joint Conference on Digital Libraries. Fort Worth, Texas, USA, 3. Juni 2018 - 7. Juni 2018. In: Proceedings of the 18th ACM/IEEE Joint Conference on Digital Libraries : JCDL '18. New York, USA: ACM Press, 2018, pp. 131-140. ISBN 978-1-4503-5178-2. Available under: doi: 10.1145/3197026.3197042
BibTex
@inproceedings{Meuschke2018Adapt-43004,
  year={2018},
  doi={10.1145/3197026.3197042},
  title={An Adaptive Image-based Plagiarism Detection Approach},
  isbn={978-1-4503-5178-2},
  publisher={ACM Press},
  address={New York, USA},
  booktitle={Proceedings of the 18th ACM/IEEE Joint Conference on Digital Libraries : JCDL '18},
  pages={131--140},
  author={Meuschke, Norman and Gondek, Christopher and Seebacher, Daniel and Breitinger, Corinna and Keim, Daniel A. and Gipp, Bela}
}
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