William W. Hager

ORCID

Publication Activity (10 Years)

Years Active: 1989-2024
Publications (10 Years): 26

Top Venues

Comput. Optim. Appl.

CoRR

CDC

ACM Trans. Math. Softw.

Publications

Daniela di Serafino, William W. Hager, Gerardo Toraldo, Marco Viola
On the stationarity for nonlinear optimization problems with polyhedral constraints. Math. Program. 205 (1) (2024)
William W. Hager, Hongchao Zhang
Algorithm 1035: A Gradient-based Implementation of the Polyhedral Active Set Algorithm. ACM Trans. Math. Softw. 49 (2) (2023)
William W. Hager, R. Tyrrell Rockafellar, Vladimir M. Veliov
Preface to Asen L. Dontchev Memorial Special Issue. Comput. Optim. Appl. 86 (3) (2023)
William W. Hager
Extension of Switch Point Algorithm to Boundary-Value Problems. CoRR (2023)
William W. Hager
Extension of switch point algorithm to boundary-value problems. Comput. Optim. Appl. 86 (3) (2023)
Jianchao Bai, William W. Hager, Hongchao Zhang
An inexact accelerated stochastic ADMM for separable convex optimization. Comput. Optim. Appl. 81 (2) (2022)
Mahya Aghaee, William W. Hager
The Switch Point Algorithm. SIAM J. Control. Optim. 59 (4) (2021)
Joseph D. Eide, William W. Hager, Anil V. Rao
Modified Legendre-Gauss-Radau Collocation Method for Optimal Control Problems with Nonsmooth Solutions. J. Optim. Theory Appl. 191 (2) (2021)
Timothy A. Davis, William W. Hager, Scott P. Kolodziej, Sencer Nuri Yeralan
Algorithm 1003: Mongoose, a Graph Coarsening and Partitioning Library. ACM Trans. Math. Softw. 46 (1) (2020)
William W. Hager, Hongchao Zhang
Convergence rates for an inexact ADMM applied to separable convex optimization. Comput. Optim. Appl. 77 (3) (2020)
William W. Hager, Hongchao Zhang
Convergence rates for an inexact ADMM applied to separable convex optimization. CoRR (2020)
Wanchun Chen, Wenhao Du, William W. Hager, Liang Yang
Bounds for integration matrices that arise in Gauss and Radau collocation. Comput. Optim. Appl. 74 (1) (2019)
William W. Hager, Hongchao Zhang
Inexact alternating direction methods of multipliers for separable convex optimization. Comput. Optim. Appl. 73 (1) (2019)
William W. Hager, Hongyan Hou, Subhashree Mohapatra, Anil V. Rao, Xiang-Sheng Wang
Correction to: Convergence rate for a Radau hp collocation method applied to constrained optimal control. Comput. Optim. Appl. 74 (1) (2019)
William W. Hager, Hongyan Hou, Subhashree Mohapatra, Anil V. Rao, Xiang-Sheng Wang
Convergence rate for a Radau hp collocation method applied to constrained optimal control. Comput. Optim. Appl. 74 (1) (2019)
William W. Hager, James T. Hungerford, Ilya Safro
A multilevel bilinear programming algorithm for the vertex separator problem. Comput. Optim. Appl. 69 (1) (2018)
Joseph D. Eide, William W. Hager, Anil V. Rao
Modified Radau Collocation method for Solving Optimal Control Problems with Nonsmooth Solutions Part I: Lavrentiev Phenomenon and the Search Space. CDC (2018)
William W. Hager, Jun Liu, Subhashree Mohapatra, Anil V. Rao, Xiang-Sheng Wang
Convergence Rate for a Gauss Collocation Method Applied to Constrained Optimal Control. SIAM J. Control. Optim. 56 (2) (2018)
Joseph D. Eide, William W. Hager, Anil V. Rao
Modified Radau Collocation Method for Solving Optimal Control Problems with Nonsmooth Solutions Part II: Costate Estimation and the Transformed Adjoint System. CDC (2018)
Fengjin Liu, William W. Hager, Anil V. Rao
Adaptive Mesh Refinement Method for Optimal Control Using Decay Rates of Legendre Polynomial Coefficients. IEEE Trans. Control. Syst. Technol. 26 (4) (2018)
William W. Hager, Jun Liu, Subhashree Mohapatra, Anil V. Rao, Xiang-Sheng Wang
A pseudospectral method for optimal control based on collocation at the Gauss points. CDC (2018)
William W. Hager, Dzung T. Phan, Jiajie Zhu
Projection algorithms for nonconvex minimization with application to sparse principal component analysis. J. Glob. Optim. 65 (4) (2016)
Timothy A. Davis, William W. Hager, James T. Hungerford
An Efficient Hybrid Algorithm for the Separable Convex Quadratic Knapsack Problem. ACM Trans. Math. Softw. 42 (3) (2016)
William W. Hager, Hongchao Zhang
Projection onto a Polyhedron that Exploits Sparsity. SIAM J. Optim. 26 (3) (2016)
William W. Hager, Hongyan Hou, Anil V. Rao
Convergence Rate for a Gauss Collocation Method Applied to Unconstrained Optimal Control. J. Optim. Theory Appl. 169 (3) (2016)
William W. Hager, Maryam Yashtini, Hongchao Zhang
An O(1/k) Convergence Rate for the Variable Stepsize Bregman Operator Splitting Algorithm. SIAM J. Numer. Anal. 54 (3) (2016)
Fengjin Liu, William W. Hager, Anil V. Rao
Adaptive mesh refinement method for optimal control using nonsmoothness detection and mesh size reduction. J. Frankl. Inst. 352 (10) (2015)
William W. Hager, James T. Hungerford
Continuous quadratic programming formulations of optimization problems on graphs. Eur. J. Oper. Res. 240 (2) (2015)
William W. Hager, Hongchao Zhang
An affine scaling method for optimization problems with polyhedral constraints. Comput. Optim. Appl. 59 (1-2) (2014)
Roberta De Asmundis, Daniela di Serafino, William W. Hager, Gerardo Toraldo, Hongchao Zhang
An efficient gradient method using the Yuan steplength. Comput. Optim. Appl. 59 (3) (2014)
William W. Hager, Jiajie Zhu
Projection algorithms for non-convex minimization, with application to sparse principal component analysis. CoRR (2014)
William W. Hager, James T. Hungerford
Optimality conditions for maximizing a function over a polyhedron. Math. Program. 145 (1-2) (2014)
William W. Hager, James T. Hungerford, Ilya Safro
A Continuous Refinement Strategy for the Multilevel Computation of Vertex Separators. LION (2014)
William W. Hager, Delphine Mico-Umutesi
Error estimation in nonlinear optimization. J. Glob. Optim. 59 (2-3) (2014)
William W. Hager, James T. Hungerford, Ilya Safro
A Multilevel Bilinear Programming Algorithm For the Vertex Separator Problem. CoRR (2014)
Fengjin Liu, William W. Hager, Anil V. Rao
An hp mesh refinement method for optimal control using discontinuity detection and mesh size reduction. CDC (2014)
Yunmei Chen, William W. Hager, Maryam Yashtini, Xiaojing Ye, Hongchao Zhang
Bregman operator splitting with variable stepsize for total variation image reconstruction. Comput. Optim. Appl. 54 (2) (2013)
William W. Hager, James T. Hungerford, Ilya Safro
A Continuous Refinement Strategy for the Multilevel Computation of Vertex Separators. CoRR (2013)
William W. Hager, Hongchao Zhang
The Limited Memory Conjugate Gradient Method. SIAM J. Optim. 23 (4) (2013)
Camila Francolin, Hongyan Hou, William W. Hager, Anil V. Rao
Costate estimation of state-inequality path constrained optimal control problems using collocation at Legendre-Gauss-Radau points. CDC (2013)
William W. Hager, Dzung T. Phan, Hongchao Zhang
An exact algorithm for graph partitioning. Math. Program. 137 (1-2) (2013)
Yunmei Chen, William W. Hager, Feng Huang, Dzung T. Phan, Xiaojing Ye, Wotao Yin
Fast Algorithms for Image Reconstruction with Application to Partially Parallel MR Imaging. SIAM J. Imaging Sci. 5 (1) (2012)
Maryam Yashtini, William W. Hager, Yunmei Chen, Xiaojing Ye
Partially parallel MR image reconstruction using sensitivity encoding. ICIP (2012)
William W. Hager, Dzung T. Phan, Hongchao Zhang
Gradient-Based Methods for Sparse Recovery. SIAM J. Imaging Sci. 4 (1) (2011)
Divya Garg, Michael A. Patterson, Camila Francolin, Christopher Darby, Geoffrey T. Huntington, William W. Hager, Anil V. Rao
Direct trajectory optimization and costate estimation of finite-horizon and infinite-horizon optimal control problems using a Radau pseudospectral method. Comput. Optim. Appl. 49 (2) (2011)
Divya Garg, William W. Hager, Anil V. Rao
Pseudospectral methods for solving infinite-horizon optimal control problems. Autom. 47 (4) (2011)
María D. González-Lima, William W. Hager, Hongchao Zhang
An Affine-Scaling Interior-Point Method for Continuous Knapsack Constraints with Application to Support Vector Machines. SIAM J. Optim. 21 (1) (2011)
Divya Garg, Michael A. Patterson, William W. Hager, Anil V. Rao, David A. Benson, Geoffrey T. Huntington
A unified framework for the numerical solution of optimal control problems using pseudospectral methods. Autom. 46 (11) (2010)
Guy Bencteux, Eric Cancès, William W. Hager, Claude Le Bris
Analysis of a Quadratic Programming Decomposition Algorithm. SIAM J. Numer. Anal. 47 (6) (2010)
William W. Hager, Dzung T. Phan
An Ellipsoidal Branch and Bound Algorithm for Global Optimization. SIAM J. Optim. 20 (2) (2009)
William W. Hager, Bernard A. Mair, Hongchao Zhang
An affine-scaling interior-point CBB method for box-constrained optimization. Math. Program. 119 (1) (2009)
Timothy A. Davis, William W. Hager
Dynamic Supernodes in Sparse Cholesky Update/Downdate and Triangular Solves. ACM Trans. Math. Softw. 35 (4) (2009)
William W. Hager, Dzung T. Phan, Hongchao Zhang
An exact algorithm for graph partitioning CoRR (2009)
Timothy A. Davis, William W. Hager
A sparse proximal implementation of the LP dual active set algorithm. Math. Program. 112 (2) (2008)
William W. Hager, Hongchao Zhang
Self-adaptive inexact proximal point methods. Comput. Optim. Appl. 39 (2) (2008)
William W. Hager, Jiangtao Luo
Optimization of Generalized Mean-Square Error in Noisy Linear Estimation. SIAM J. Matrix Anal. Appl. 30 (2) (2008)
Luis Alberto Fernandez, William W. Hager, Fredi Tröltzsch
Editorial. Comput. Optim. Appl. 39 (3) (2008)
Timothy A. Davis, William W. Hager
Dual multilevel optimization. Math. Program. 112 (2) (2008)
William W. Hager
COAP 2007 Best Paper Award. Comput. Optim. Appl. 41 (2) (2008)
Yanqing Chen, Timothy A. Davis, William W. Hager, Sivasankaran Rajamanickam
Algorithm 887: CHOLMOD, Supernodal Sparse Cholesky Factorization and Update/Downdate. ACM Trans. Math. Softw. 35 (3) (2008)
Yi Jiang, William W. Hager, Jian Li
The generalized triangular decomposition. Math. Comput. 77 (262) (2008)
Maxime Barrault, Eric Cancès, William W. Hager, Claude Le Bris
Multilevel domain decomposition for electronic structure calculations. J. Comput. Phys. 222 (1) (2007)
William W. Hager, Hongchao Zhang
Asymptotic Convergence Analysis of a New Class of Proximal Point Methods. SIAM J. Control. Optim. 46 (5) (2007)
Maxime Barrault, Guy Bencteux, Eric Cancès, William W. Hager, Claude Le Bris
Domain Decomposition for Electronic Structure Computations. PARCO (2007)
Yong Liu, Tan F. Wong, William W. Hager
Training Signal Design for Estimation of Correlated MIMO Channels With Colored Interference. IEEE Trans. Signal Process. 55 (4) (2007)
Yi Jiang, William W. Hager, Jian Li
Tunable Channel Decomposition for MIMO Communications Using Channel State Information. IEEE Trans. Signal Process. 54 (11) (2006)
William W. Hager, Hongchao Zhang
Algorithm 851: CG_DESCENT, a conjugate gradient method with guaranteed descent. ACM Trans. Math. Softw. 32 (1) (2006)
William W. Hager
Editorial. Comput. Optim. Appl. 33 (1) (2006)
William W. Hager, Hongchao Zhang
A New Active Set Algorithm for Box Constrained Optimization. SIAM J. Optim. 17 (2) (2006)
William W. Hager, Soonchul Park
Global convergence of SSM for minimizing a quadratic over a sphere. Math. Comput. 74 (251) (2005)
Yi Jiang, Jian Li, William W. Hager
Joint transceiver design for MIMO communications using geometric mean decomposition. IEEE Trans. Signal Process. 53 (10) (2005)
Yi Jiang, Jian Li, William W. Hager
Uniform channel decomposition for MIMO communications. IEEE Trans. Signal Process. 53 (11) (2005)
Timothy A. Davis, William W. Hager
Row Modifications of a Sparse Cholesky Factorization. SIAM J. Matrix Anal. Appl. 26 (3) (2005)
William W. Hager, Hongchao Zhang
Recent Advances in Bound Constrained Optimization. System Modelling and Optimization (2005)
William W. Hager, Hongchao Zhang
A New Conjugate Gradient Method with Guaranteed Descent and an Efficient Line Search. SIAM J. Optim. 16 (1) (2005)
William W. Hager, Soonchul Park
The Gradient Projection Method with Exact Line Search. J. Glob. Optim. 30 (1) (2004)
Yijun Sun, Jian Li, William W. Hager
Two new regularized AdaBoost algorithms. ICMLA (2004)
Yi Jiang, Jian Li, William W. Hager
MIMO transceiver design using geometric mean decomposition. ITW (2004)
Hongchao Zhang, William W. Hager
A Nonmonotone Line Search Technique and Its Application to Unconstrained Optimization. SIAM J. Optim. 14 (4) (2004)
William W. Hager, Yaroslav Krylyuk
Multiset graph partitioning. Math. Methods Oper. Res. 55 (1) (2002)
William W. Hager
Minimizing the Profile of a Symmetric Matrix. SIAM J. Sci. Comput. 23 (5) (2002)
William W. Hager
The Dual Active Set Algorithm and Its Application to Linear Programming. Comput. Optim. Appl. 21 (3) (2002)
William W. Hager
Minimizing a Quadratic Over a Sphere. SIAM J. Optim. 12 (1) (2001)
Asen L. Dontchev, William W. Hager
The Euler approximation in state constrained optimal control. Math. Comput. 70 (233) (2001)
Timothy A. Davis, William W. Hager
Multiple-Rank Modifications of a Sparse Cholesky Factorization. SIAM J. Matrix Anal. Appl. 22 (4) (2001)
William W. Hager
Iterative Methods for Nearly Singular Linear Systems. SIAM J. Sci. Comput. 22 (2) (2000)
Asen L. Dontchev, William W. Hager, Vladimir M. Veliov
Second-Order Runge-Kutta Approximations in Control Constrained Optimal Control. SIAM J. Numer. Anal. 38 (1) (2000)
Asen L. Dontchev, William W. Hager, Vladimir M. Veliov
Uniform Convergence and Mesh Independence of Newton's Method for Discretized Variational Problems. SIAM J. Control. Optim. 39 (3) (2000)
William W. Hager
Runge-Kutta methods in optimal control and the transformed adjoint system. Numerische Mathematik 87 (2) (2000)
Dongxing Wang, Rouben Rostamian, William W. Hager
The Wave Annihilation Technique and the Design of Nonreflective Coatings. SIAM J. Appl. Math. 60 (4) (2000)
William W. Hager
Load Balancing and Continuous Quadratic Programming. IPDPS Workshops (2000)
Timothy A. Davis, William W. Hager
Modifying a Sparse Cholesky Factorization. SIAM J. Matrix Anal. Appl. 20 (3) (1999)
William W. Hager, M. Seetharama Gowda
Stability in the presence of degeneracy and error estimation. Math. Program. 85 (1) (1999)
William W. Hager
Stabilized Sequential Quadratic Programming. Comput. Optim. Appl. 12 (1-3) (1999)
William W. Hager, Yaroslav Krylyuk
Graph Partitioning and Continuous Quadratic Programming. SIAM J. Discret. Math. 12 (4) (1999)
Asen L. Dontchev, William W. Hager
Implicit Functions, Lipschitz Maps, and Stability in Optimization. Math. Oper. Res. 19 (3) (1994)
William W. Hager
Dual active sets and constrained optimization. Ann. Oper. Res. 43 (4) (1993)
William W. Hager, Donald W. Hearn
Application of the dual active set algorithm to quadratic network optimization. Comput. Optim. Appl. 1 (4) (1993)
William W. Hager
Editorial. Comput. Optim. Appl. 1 (1) (1992)
William W. Hager
Updating the Inverse of a Matrix. SIAM Rev. 31 (2) (1989)

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Publication Activity (10 Years)

Top Topics

Top Venues

William W. Hager