Table 1.

Performance comparative analysis (see Section 5.1.2): cubic splinelet generated spline (denoted as s) vs. smoothing spline (denoted as $s_R$) for all test streams $f_i$, where $i=1,2,3,4$.

f	MAE(s,f)	RMSE(s,f)	NRSE(s,f)	QMAE(s,${\mathit{s}}_{\mathit{R}}$)	QRMSE(s,${\mathit{s}}_{\mathit{R}}$)	CR(s,f)
$f_1$	0.029	0.037	0.021	1.110	1.243	135
$f_2$	0.136	0.170	0.098	1.033	1.070	183
$f_3$	0.402	0.502	0.279	1.019	1.040	201
$f_4$	0.933	1.165	0.560	1.013	1.028	208