This corpus is outdated. Please use its successor PAN-PC-11: https://doi.org/10.5281/zenodo.3250095 The PAN plagiarism corpus 2009 (PAN-PC-09) is a corpus for the evaluation of automatic plagiarism detection algorithms. For research purposes the corpus can be used free of charge. The PAN-PC-09 contains documents in which artificial plagiarism has been inserted automatically. The plagiarism cases have been constructed using a so-called random plagiarist, a computer program which constructs plagiarism according to a number of random variables. The variables include the percentage of plagiarism in the whole corpus, the percentage of plagiarism per document, the length of a single plagiarized section, and the degree of obfuscation per plagiarized section.

{"references": ["Martin Potthast, Benno Stein, Andreas Eiselt, Alberto Barr\u00f3n-Cede\u00f1o, and Paolo Rosso. Overview of the 1st International Competition on Plagiarism Detection. In Benno Stein et al, editors, SEPLN 2009 Workshop on Uncovering Plagiarism, Authorship, and Social Software Misuse (PAN 2009), pages 1-9, September 2009. CEUR-WS.org. ISSN 1613-0073."]}