Rate My Professor William Hager

Hager has made significant contributions to the field through his publications, including the textbook "Applied Numerical Linear Algebra" published in 1988 by Prentice-Hall. Among his highly cited works are "Updating the inverse of a matrix" in SIAM Review (1989, 1578 citations), "A new conjugate gradient method with guaranteed descent and an efficient line search" (2005, 1559 citations), "A survey of nonlinear conjugate gradient methods" (2006, 1544 citations), and papers on pseudospectral methods for optimal control. As of March 2025, his Google Scholar profile reports over 20,338 citations, an h-index of 62, and i10-index of 152. He has edited several books, such as "Large Scale Optimization: State of the Art" (1994) and "Optimal Control: Theory, Algorithms, and Applications" (1998). Hager's honors include election as a SIAM Fellow in 2015, University of Florida Research Foundation Professorship from 2008 to 2011, Colonel Allan R. and Margaret G. Crow Term Professorship in 2015-2016, and the Chinese Operations Research Society Best Paper Prize in 2018 for “Alternating Direction Approximate Newton Method for Partially Parallel Imaging.” He serves as Editor-in-Chief of Computational Optimization and Applications since 1992 and was Associate Editor of SIAM Journal on Optimization from 2013 to 2021. Hager has delivered distinguished lectures, including the CBMS Principal Lecturer on Computational Methods in Optimal Control in 2018, and numerous plenary and invited talks at international conferences.