We present a detailed description of an algorithm tailored to detect external plagiarism in PAN-09 competition. The algorithm is divided into three steps: a first reduction of the size of the problem by a selection of ten suspicious plagiarists using a n-gram distance on properly recoded texts. A search for matches after T9-like recoding. A "joining algorithm" that merges selected matches and is able to detect obfuscated plagiarism. The results are briefly discussed.

A Plagiarism Detection Procedure in Three Steps: Selection, Matches and "Squares" / Chiara, Basile; Benedetto, Dario; Caglioti, Emanuele; Giampaolo, Cristadoro; MIRKO DEGLI, Esposti. - 502:(2009), pp. 19-23. (Intervento presentato al convegno PAN-09 3rd Workshop on Uncovering Plagiarism, Authorship and Social Software Misuse and 1st Internat tenutosi a San Sebastian; Spain nel 10 settembre 2009).

A Plagiarism Detection Procedure in Three Steps: Selection, Matches and "Squares"

BENEDETTO, Dario;CAGLIOTI, Emanuele;
2009

Abstract

We present a detailed description of an algorithm tailored to detect external plagiarism in PAN-09 competition. The algorithm is divided into three steps: a first reduction of the size of the problem by a selection of ten suspicious plagiarists using a n-gram distance on properly recoded texts. A search for matches after T9-like recoding. A "joining algorithm" that merges selected matches and is able to detect obfuscated plagiarism. The results are briefly discussed.
2009
PAN-09 3rd Workshop on Uncovering Plagiarism, Authorship and Social Software Misuse and 1st Internat
Coding; N-grams; Plagiarism
04 Pubblicazione in atti di convegno::04b Atto di convegno in volume
A Plagiarism Detection Procedure in Three Steps: Selection, Matches and "Squares" / Chiara, Basile; Benedetto, Dario; Caglioti, Emanuele; Giampaolo, Cristadoro; MIRKO DEGLI, Esposti. - 502:(2009), pp. 19-23. (Intervento presentato al convegno PAN-09 3rd Workshop on Uncovering Plagiarism, Authorship and Social Software Misuse and 1st Internat tenutosi a San Sebastian; Spain nel 10 settembre 2009).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/203446
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