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Shock and Vibration
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2021
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Article
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Tab 2
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Research Article
Preconditioned Conjugate Gradient Algorithm-Based 2D Waveform Inversion for Shallow-Surface Site Characterization
Table 2
Comparative evaluation of the CG and PCG performances in the complex structure model noise-free test.
Optimization algorithm
Total iterations
Normalized final misfit value
Initial value of RMSE
Final value of RMSE
CG
10
0.0587
0.1022
0.0644
PCG
40
0.0064
0.1022
0.0320