Bayesian PINNs for uncertainty-aware inverse problems (BPINN-IP)

BA YESIAN PINNS FOR UNCERT AINTY-A W ARE INVERSE PROBLEMS (BPINN-IP) Ali MOHAMMAD-DJAF ARI ISCT, Bures-sur-Y vette, France Institute of Digital T win (IDT), EIT, Ningbo, China Dept. of Statistics, Central South University, Changcha, China ABSTRACT The main contribution of this paper is to develop a hierarchical Bayesian formulation of PINNs for linear inverse problems, which is called BPINN-IP . The proposed methodology extends PINN to account for prior knowledge on the nature of the expected NN output, as well as its weights. Also, as we can have access to the posterior probability distributions, naturally uncertainties can be quantified. Also, variational inference and Monte Carlo dropout are employed to provide predictive means and variances for reconstructed images. Un example of applications to deconvolution and super-resolution is considered, details of the different steps of implementations are given, and some preliminary results are presented.