Acoustic impedance inversion by feedback artificial neural network (Article)

Acoustic impedance inversion; Artificial Neural Network; Best estimates; Conjugate gradient algorithms; Elman ANN; Feedback connection; Feedback neural network; Hidden layers; Hidden neurons; ILL-posed inverse problem; Learning rules; Local minimums; Multi-step; Prediction accuracy; Rate of convergence; Seismic datas; Seismic inversion; Synthetic and real data; Temporal behaviour; Test data; Time delay units; Time step; Training data Engineering controlled terms: Acoustic impedance measurement; Approximation theory; Backpropagation algorithms; Conjugate gradient method; Data flow analysis; Inverse problems; Neural networks; Neurons; Seismic response; Seismic waves Engineering main heading: Acoustic impedance GEOBASE Subject Index: accuracy assessment; artificial neural network; back propagation; data inversion; frequency dependence; hydrocarbon reservoir; numerical model; prediction; seismic data

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