External Plagiarism Detection using Information Retrieval and Sequence Alignment - Notebook for PAN at CLEF 2011.
Nawab, R.M.A., Stevenson, M. and Clough, P.
(2011)
External Plagiarism Detection using Information Retrieval and Sequence Alignment - Notebook for PAN at CLEF 2011.
In: Petras, V., Forner, P. and Clough, P., (eds.)
Proceedings of the 5th International Workshop on Uncovering Plagiarism, Authorship, and Social Software Misuse.
CLEF 2011 Conference on Multilingual and Multimodal Information Access Evaluation, 19-22 Sep 2011, Amsterdam, Netherlands.
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Abstract
This paper describes the University of Sheffield entry for the 3rd International Competition on Plagiarism Detection which attempted the monolingual external plagiarism detection task. A three stage framework was used: preprocessing and indexing, candidate document selection (using an Information Retrieval based approach) and detailed analysis (using the Running Karp-Rabin Greedy String Tiling algorithm). The submitted system obtained an overall performance of 0.0804, precision of 0.2780, recall of 0.0885 and granularity of 2.18 in the formal evaluation.
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