Research Article

Modelling Arterial Pressure Waveforms Using Gaussian Functions and Two-Stage Particle Swarm Optimizer

Figure 4

Waveform fitting of a normalized pulse using four different methods. (a) Nelder-Mead, (b) MPSO, (c) DMS-PSO, and (d) TSPSO. In each subfigure, the upper panel shows the original normalized pulse , the fitting curve using three Gaussian functions , and the corresponding three Gaussian functions , , and from left to right in turn. The bottom panel shows the corresponding residual error between the original and fitted waveforms.
923260.fig.004a
(a)
923260.fig.004b
(b)
923260.fig.004c
(c)
923260.fig.004d
(d)