TY - RPRT TI - Machine Learning Moment Closure Models for the Radiative Transfer Equation II: Enforcing Global Hyperbolicity in Gradient-Based Closures AU - Huang, Juntao AU - Cheng, Yingda AU - Christlieb, Andrew J. AU - Roberts, Luke F. AU - Yong, Wen-An PY - 2023 DO - 10.1137/21m1423956 UR - https://www.osti.gov/biblio/2420674 ID - 2420674 ER -