Lee, G.-H.G.-H.LeeSHOU-DE LIN2018-09-102018-09-102016http://www.scopus.com/inward/record.url?eid=2-s2.0-84963623116&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/396551LambdaMF: Learning nonsmooth ranking functions in matrix factorization using lambdaconference paper10.1109/ICDM.2015.108