OP-KNN: Method and Applications

Table 1

Key information about the data sets and number of selected variables on average.

Regression	Data			Variables selected by
	Train	Test	Variable	OP-KNN on average
Abalone	2784	1393	8	4.4
Ailerons	4752	2377	5	3.4
Elevators	6344	3173	6	4
Auto Price	106	53	15	2.4
Servo	111	56	4	1.5
Breast cancer	129	65	32	8.9
Bank	2999	1500	8	4
Stocks	633	317	9	7.7
Delve	2000	20732	104	3