Before revision:  In this paper, we introduce and analyze a new class of preconditioners for SGFEM that we call truncation preconditioners . Extending the idea of the mean-based preconditioner, the new preconditioners capture additional significant components of the stochastic Galerkin matrix.
After revision:  In this paper, we introduce and analyze a new class of preconditioners for SGFEM . Extending the idea of the mean-based preconditioner, the new preconditioners capture additional significant components of the stochastic Galerkin matrix.