TY - RPRT TI - Conditional Karhunen-Loève expansion for uncertainty quantification and active learning in partial differential equation models AU - Tipireddy, Ramakrishna (ORCID:0000000321962164) AU - Barajas-Solano, David A. (ORCID:0000000314428086) AU - Tartakovsky, Alexandre M. PY - 2020 DO - 10.1016/j.jcp.2020.109604 UR - https://www.osti.gov/biblio/1691631 ID - 1691631 ER -