This paper proves that local polynomial regression smoothers achieve linear minimax efficiency over a class of functions, generalizing a result of Fan (1993) for local linear smoothers and proving that a conjecture of Fan and Gijbels (1996) is true. Consequences are also illustrated.
Fan, JianqingGasser, TheoGijbels, IrèneBrockmann, MichaelEngel, Joachim
Jianqing FanThéo GasserIrène GijbelsMichael BrockmannJoachim Engel