07.01.2011 Topics Plagiarism Detection Software 2010 • Plagiarism • Plagiarism Detection Software Silver Bullet or • Test 2010 Waste of Time? • Test Results • Portal Plagiarism Debora Weber-Wulff • Questions? HTW Berlin Flickr cc-by-nc, MrClean1982, 2007 by-nc-sa Robyn Jay by-nc-sa Robyn Jay Virtual Press Conference 2011-01-07 The Jay and the Peacock Definition of Plagiarism - Wilson Mizner A Jay venturing into a yard where Peacocks used to • walk, found there a number of feathers which had fallen from the Peacocks when they were moulting. He tied them all to his tail and strutted down towards the Peacocks. When he came near them they soon discovered the cheat, and striding up to him pecked at him and plucked away his borrowed plumes. So the Jay Wikiquote could do no better than go back to the other Jays, who had watched his behavior from a distance; but they were by-nc-sa Robyn Jay by-nc-sa Robyn Jay equally annoyed with him, and told him:"It is not only Flickr, cc-by-nc-sa, suttonhoo, 2006 fine feathers that make fine birds." 4 Wikipedia Definition Modern Language Association Definition • "Plagiarism is the practice of (dishonestly) • MLA Handbook for Writers of Research claiming or implying original authorship of Papers: material which one has not actually created, such as when a person "A writer who fails to give appropriate incorporates material acknowledgment when repeating another's from someone else's work wording or particularly apt term, paraphrasing into their own work without another's argument, or presenting another's attributing it." (Wikipedia) line of thinking is guilty of plagiarism." by-nc-sa Robyn Jay by-nc-sa Robyn Jay • But watch who the author is! 1
07.01.2011 Dictionary Definition Plagiarism Detection Software • Computer Programs • Plagiarism • On-line or off-line 1. the unauthorized use or close imitation of • Compares content that is available digitally the language and thoughts of another with the Internet, with internal databases, or author and the representation of them as both one's own original work. • Looks for matches 2. something used and • Reports on suspicious bits represented in this manner. • Try to answer: plagiarism or not? by-nc-sa Robyn Jay by-nc-sa Robyn Jay (Websters) There are so many systems! Which one should we use? by-nc-sa Robyn Jay by-nc-sa Robyn Jay Flickr, cc-by-nc-nd, Admit One, 2006 HTW tests Plagiarism Detection Systems Test 2010 • 9 months work with 2 persons • 42 test cases • English, German, Japanese • Different kinds of plagiarism, a few originals • Market survey • Access to the systems • 48 systems found, 26 could be tested by-nc-sa Robyn Jay by-nc-sa Robyn Jay • We also tested the ProfNet service 2
07.01.2011 Problems Problems • Nothing is found from • Umlauts are a problem, but less of a problem books – not even when the than in the last test book is listed in Google • Edited texts difficult to find Books. Flickr, cc-by-nc-sa surrealmuse, 2005 • Systems are difficult to use • The 100% plagiarism from • Not all companies Google Books was generally are professional only listed as under 25% plagiarism • Copies of test • Translations are never found material are kept – by-nc-sa Robyn Jay by-nc-sa Robyn Jay full rights given away Flickr, cc-by-nc, Leeks, 2006 Results Results • Partially useful: • Useless: PlagAware, Turnitin, Ephorus, PlagScan, Urkund iPlagiarismCheck, Plagiarism Detector, Un.cov.er, Genuine Text, Catch It First, Plagium, Viper, Plagiarism Search, Grammarly, • Barely useful: Percent Dupe, Plagiarism Checker, Article Docoloc, Copyscape, Blackboard/Safe Assign, Checker Plagiarism Finder, Plagiarisma, Compilatio, StrikePlagiarism, The Plagiarism Checker • Special case: ProfNet by-nc-sa Robyn Jay by-nc-sa Robyn Jay Portal Plagiarism Links • Portal Plagiat http://plagiat.htw-berlin.de • Home page Prof. Weber-Wulff http://www.f4.htw-berlin.de/~weberwu/ • Blog (in English) http://copy-shake-paste.blogspot.com/ by-nc-sa Robyn Jay by-nc-sa Robyn Jay 3
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