Research Article

Selection Method for Kernel Function in Nonparametric Extrapolation Based on Multicriteria Decision-Making Technology

Figure 5

Forms of four kernel functions.
391273.fig.005a
(a) Range-based ellipse
391273.fig.005b
(b) Mean-based ellipse
391273.fig.005c
(c) Epanechnikov
391273.fig.005d
(d) Circular