Stephen Billups
Stephen Billups
Associate Professor of Mathematics, University of Colorado Denver
Verified email at
Cited by
Cited by
Algorithm 652: HOMPACK: A suite of codes for globally convergent homotopy algorithms
LT Watson, SC Billups, AP Morgan
ACM Transactions on Mathematical Software (TOMS) 13 (3), 281-310, 1987
Complementarity problems
SC Billups, KG Murty
Journal of computational and Applied Mathematics 124 (1-2), 303-318, 2000
A comparison of large scale mixed complementarity problem solvers
SC Billups, SP Dirkse, MC Ferris
Computational Optimization and Applications 7 (1), 3-25, 1997
A dynamic model of differential human capital and criminal activity
HN Mocan, SC Billups, J Overland
Economica 72 (288), 655-681, 2005
Algorithms for complementarity problems and generalized equations
SC Billups
QPCOMP: A quadratic programming based solver for mixed complementarity problems
SC Billups, MC Ferris
Mathematical Programming 76 (3), 533-562, 1997
Stochastic derivative-free optimization using a trust region framework
J Larson, SC Billups
Computational Optimization and applications 64 (3), 619-645, 2016
Derivative-free optimization of expensive functions with computational error using weighted regression
SC Billups, J Larson, P Graf
SIAM Journal on Optimization 23 (1), 27-53, 2013
A homotopy-based algorithm for mixed complementarity problems
SC Billups
SIAM Journal on Optimization 12 (3), 583-605, 2002
Reference manual for the CONTAIN 1. 1 code for containment severe accident analysis
KE Washington, KK Murata, RG Gido, F Gelbard, NA Russell, SC Billups, ...
Nuclear Regulatory Commission, Washington, DC (United States). Div. of …, 1991
Solving the canonical dual of box-and integer-constrained nonconvex quadratic programs via a deterministic direct search algorithm
DY Gao, LT Watson, DR Easterling, WI Thacker, SC Billups
Optimization Methods and Software 28 (2), 313-326, 2013
An augmented Jacobian matrix algorithm for tracking homotopy zero curves
SC Billups
Virginia Polytechnic Institute and State University, 1985
ProxECAT: Proxy External Controls Association Test. A new case-control gene region association test using allele frequencies from public controls
AE Hendricks, SC Billups, HNC Pike, IS Farooqi, E Zeggini, SA Santorico, ...
PLoS genetics 14 (10), e1007591, 2018
A probability-one homotopy algorithm for nonsmooth equations and mixed complementarity problems
SC Billups, LT Watson
SIAM Journal on Optimization 12 (3), 606-626, 2002
Identifying significant temporal variation in time course microarray data without replicates
SC Billups, MC Neville, M Rudolph, W Porter, P Schedin
BMC bioinformatics 10 (1), 1-14, 2009
An iterative method for generalized set-valued nonlinear mixed quasi-variational inequalities
E Al-Shemas, SC Billups
Journal of Computational and Applied Mathematics 170 (2), 423-432, 2004
Convergence of an infeasible interior-point algorithm from arbitrary positive starting points
SC Billups, MC Ferris
SIAM Journal on Optimization 6 (2), 316-325, 1996
Improving the robustness of descent-based methods for semismooth equations using proximal perturbations
SC Billups
Mathematical Programming 87 (1), 153-175, 2000
Probability-one homotopy maps for mixed complementarity problems
K Ahuja, LT Watson, SC Billups
Computational Optimization and Applications 41 (3), 363-375, 2008
A comparison of algorithms for large scale mixed complementarity problems
SC Billups, SP Dirkse, MC Ferris
University of Colorado at Denver, 1995
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