1.3 Goals and tools Data Mining is a secondary analysis >> of data collected in an other purpose(management eg Data Mining aims at finding structures of two kinds: models and patterns Patterns a characteristic structure exhibited by a few number of points a small subgroup of customers with a high commercial value, or conversely highly risked Tools: cluster analysis visualisation by dimension reduction PCA, CA etc association rules Beijing, 2008 8Beijing, 2008 8 1.3 Goals and tools ◼ Data Mining is a « secondary analysis » of data collected in an other purpose (management eg) ◼ Data Mining aims at finding structures of two kinds : models and patterns ◼ Patterns ◼ a characteristic structure exhibited by a few number of points : a small subgroup of customers with a high commercial value, or conversely highly risked. ◼ Tools: cluster analysis, visualisation by dimension reduction: PCA, CA etc. association rules