Jianyong Wang Yuzhou Zhang Lizhu Zhou George Karypis Charu C. Aggarwal CONTOUR: an efficient algorithm for discovering discriminating subsequences. 1-29 2009 18 Data Min. Knowl. Discov. 1 http://dx.doi.org/10.1007/s10618-008-0100-7 db/journals/datamine/datamine18.html#WangZZKA09