Overview of the 4th International Competition on Plagiarism Detection

[EN] This paper overviews 15 plagiarism detectors that have been evaluated within the fourth international competition on plagiarism detection at PAN 12. We report on their performances for two sub-tasks of external plagiarism detection: candidate document retrieval and detailed document comparison. Furthermore, we introduce the PAN plagiarism corpus 2012, the TIRA experimentation platform, and the ChatNoir search engine for the ClueWeb. They add scale and realism to the evaluation as well as new means of measuring performance.This work was partly funded by the EC WIQ-EI project (project no. 269180) within the FP7 People Program, by the MICINN Text-Enterprise (TIN2009-13391-C04-03) research project, and by the ERCIM "Alain Bensoussan" Fellowship Programme (funded from the European Union Seventh Framework Programme FP7/2007-2013 under grant agreement number 246016).Potthast, M.; Gollub, T.; Hagen, M.; Graßegger, J.; Kiesel, J.; Michel, ML.; Oberländer, A.... (2012). Overview of the 4th International Competition on Plagiarism Detection. CLEF 2012 Evaluation Labs and Workshop – Working Notes Papers, 17-20 September. 101-128. http://hdl.handle.net/10251/5528210112