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Preprint Sep 2026

Structure-dependent failure modes of neural priors in acoustic full-waveform inversion

Frequency continuation does not improve every neural representation, and better velocity recovery need not imply better prediction of unseen waveforms. We compare a velocity grid with total-variation regularization, an adapted sinusoidal coordinate network (SIREN), and a frozen image generator with a full-grid residual...

Zi-Ye Yu, Xin Liu, Yu-Qi Cai · 0 citations
Preprint Sep 2026

Wave-Propagation Geometry Emerges from Scalar Travel-Time Relations

Scalar travel-time relations can identify propagation geometry without velocity inputs, ray labels or equation supervision during learning. Physical interpretation is applied after learning through the high-frequency isotropic eikonal relation (Aki and Richards, 2002). Here we show that local value differences constrai...

Zi-Ye Yu · 0 citations

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