TY - JOUR A1 - Sullivan, T. J. T1 - Contributed discussion on the article "A Bayesian conjugate gradient method" T2 - Bayesian Analysis N2 - The recent article "A Bayesian conjugate gradient method" by Cockayne, Oates, Ipsen, and Girolami proposes an approximately Bayesian iterative procedure for the solution of a system of linear equations, based on the conjugate gradient method, that gives a sequence of Gaussian/normal estimates for the exact solution. The purpose of the probabilistic enrichment is that the covariance structure is intended to provide a posterior measure of uncertainty or confidence in the solution mean. This note gives some comments on the article, poses some questions, and suggests directions for further research. Y1 - 2019 UR - https://opus4.kobv.de/opus4-zib/frontdoor/index/index/docId/7380 VL - 14 IS - 3 SP - 985 EP - 989 ER -