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. Author manuscript; available in PMC: 2019 Nov 1.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2018 Sep 12;65(11):2042–2053. doi: 10.1109/TUFFC.2018.2869810

Fig. 8.

Fig. 8.

Bias of DP estimations for coefficients α, b, and n at different weight values used in DP. In (a), the regularization weight for b and n are fixed at 1e8 while it varies for α. In (b), the regularization weight for α and n are fixed at 1e8 while it varies for b. In (c), the regularization weight for α and b are fixed at 1e8 while it varies for n.