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. 2024 Feb 8;24(4):1129. doi: 10.3390/s24041129

Table 3.

Results of interpolation methods.

Methods PCC MAE RMSE MAPE Standard Deviation
pchip [29] 0.9948 3.1701 4.7902 0.0191 4.7682
cubic spline 0.9942 3.2968 5.0278 0.0189 5.0265
spline 0.9932 3.3427 5.4407 0.0206 5.4278
linear 0.9934 3.2514 5.4306 0.0201 5.3822

Bold indicates optimal performance.