Positive Approximation and Interpolation Using Compactly Supported Radial Basis Functions

Table 4

Variances for two interpolants for 𝑆(𝑥,𝑦).

Number of data points	30	60	100	150	250
CMQS	1.54	1.20	0.97	0.54	0.11
Our proposed method	2.32	1.97	1.55	0.97	0.24