Thisbookisourattempttobringtogethermanyoftheimportantnewideasinlearning,andexplaintheminastatisticalframework.Whilesomemathematicaldetailsareneeded,weemphasizethemethodsandtheirconceptualunderpinningsratherthantheirtheoreticalproperties.Asaresult,wehopethatthisbookwillappealnotjusttostatisticiansbutalsotoresearchersandpractitionersinawidevarietyoffields.