A Two-Phase Plagiarism Detection Method

In this paper we describe a two-phase plagiarism detection method, which we have used in the learning management system of SCUT to detect plagiarism in the network engineering related courses. And we also used this method to detect external plagiarism in the PAN-10 competition. The method is divided into two steps: the first step, called pre-selecting, is to narrow the scope of detection using the successive same fingerprint; the second step, called locating, is to find and merge all fragments between two documents using cluster method. Our method ran 19 hours in the PAN-10 competition, and the result ranked the second place, which met our expectation.