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. 2014 Apr 15;106(8):1741–1750. doi: 10.1016/j.bpj.2014.02.022

Figure 3.

Figure 3

Regularization parameter α determination using the L-curve criterion. The elbow of the curve represents the α-value for the best compromise between variance and norm of the solution. It is found by graphical means through extrapolation from the last five points from either end of the curve. The closest point from the intercept to the curve represents the best-fit α-value.