32 citations · 127 across the 22 of their papers we have counts for
5 papers · 1 filter
Adjoint DSMC for nonlinear Boltzmann equation constrained optimization
Russel Caflisch, Denis Silantyev, Yunan Yang
Applications for kinetic equations such as optimal design and inverse problems often involve finding unknown parameters through gradient-based optimization algorithms. Based on the…
Anderson Acceleration for Seismic Inversion
Yunan Yang
The state-of-art seismic imaging techniques treat inversion tasks such as FWI and LSRTM as PDE-constrained optimization problems. Due to the large-scale nature, gradient-based opti…
Stability of Gibbs Posteriors from the Wasserstein Loss for Bayesian Full Waveform Inversion
Matthew M. Dunlop, Yunan Yang
Recently, the Wasserstein loss function has been proven to be effective when applied to deterministic full-waveform inversion (FWI) problems. We consider the application of this lo…
Anderson Acceleration Based on the Sobolev Norm for Contractive and Noncontractive Fixed-Point Operators
Yunan Yang, Alex Townsend, Daniel Appelö
Anderson acceleration (AA) is a technique for accelerating the convergence of fixed-point iterations. In this paper, we apply AA to a sequence of functions and modify the norm in i…
Optimal Transport Based Seismic Inversion: Beyond Cycle Skipping
Bjorn Engquist, Yunan Yang
Full-waveform inversion (FWI) is today a standard process for the inverse problem of seismic imaging. PDE-constrained optimization is used to determine unknown parameters in a wave…