1.1 Definitions U M Fayyad, G Piatetski-Shapiro :Data Mining is the nontrivial process of identifying valid novel potentially useful and ultimately understandable patterns in data D.J. Hand shall define Data Mining as the discovery of interesting, unexpected, or valuable structures in large data sets Beijing, 2008Beijing, 2008 4 1.1 Definitions: ◼ U.M.Fayyad, G.Piatetski-Shapiro : “ Data Mining is the nontrivial process of identifying valid, novel, potentially useful, and ultimately understandable patterns in data ” ◼ D.J.Hand : “ I shall define Data Mining as the discovery of interesting, unexpected, or valuable structures in large data sets