Stephen C. Billups

1.4k total citations
27 papers, 929 citations indexed

About

Stephen C. Billups is a scholar working on Numerical Analysis, Computational Theory and Mathematics and Control and Systems Engineering. According to data from OpenAlex, Stephen C. Billups has authored 27 papers receiving a total of 929 indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Numerical Analysis, 18 papers in Computational Theory and Mathematics and 6 papers in Control and Systems Engineering. Recurrent topics in Stephen C. Billups's work include Advanced Optimization Algorithms Research (16 papers), Optimization and Variational Analysis (8 papers) and Iterative Methods for Nonlinear Equations (6 papers). Stephen C. Billups is often cited by papers focused on Advanced Optimization Algorithms Research (16 papers), Optimization and Variational Analysis (8 papers) and Iterative Methods for Nonlinear Equations (6 papers). Stephen C. Billups collaborates with scholars based in United States, Australia and Kuwait. Stephen C. Billups's co-authors include Layne T. Watson, Alexander P. Morgan, Michael C. Ferris, Katta G. Murty, Steven P. Dirkse, Jody Overland, Jeffrey Larson, H. Naci Mocan, Peter Gräf and I. Sadaf Farooqi and has published in prestigious journals such as PLoS Genetics, BMC Bioinformatics and Mathematical Programming.

In The Last Decade

Stephen C. Billups

25 papers receiving 830 citations

Peers

Stephen C. Billups

CTM

CSE

E. N. Barron United States

C. B. Garcia United States

George P. Papavassilopoulos United States

Sanyang Liu China

Fuke Wu China

G.S. Ladde United States

Michael Neumann Germany

Fabio Camilli Italy

Marc Quincampoix France

Daniel Tabak United States

E. N. Barron United States

Stephen C. Billups

657 ×1.4

CTM

160 ×0.4

256 ×1.7

CSE

90 ×0.9

116 ×1.4

Citations per year, relative to Stephen C. Billups Stephen C. Billups (= 1×) peers E. N. Barron

Countries citing papers authored by Stephen C. Billups

Since Specialization

Citations

This map shows the geographic impact of Stephen C. Billups's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Stephen C. Billups with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Stephen C. Billups more than expected).

Fields of papers citing papers by Stephen C. Billups

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Stephen C. Billups. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Stephen C. Billups. The network helps show where Stephen C. Billups may publish in the future.

Co-authorship network of co-authors of Stephen C. Billups

This figure shows the co-authorship network connecting the top 25 collaborators of Stephen C. Billups. A scholar is included among the top collaborators of Stephen C. Billups based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Stephen C. Billups. Stephen C. Billups is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Watson, Layne T., et al.. (2022). Dynamic System Diversification for Securing Cloud-based IoT Subnetworks. ACM Transactions on Autonomous and Adaptive Systems. 17(1-2). 1–23.

Hendricks, Audrey E., Stephen C. Billups, I. Sadaf Farooqi, et al.. (2018). ProxECAT: Proxy External Controls Association Test. A new case-control gene region association test using allele frequencies from public controls. PLoS Genetics. 14(10). e1007591–e1007591. 24 indexed citations

Gräf, Peter & Stephen C. Billups. (2017). MDTri: robust and efficient global mixed integer search of spaces of multiple ternary alloys. Computational Optimization and Applications. 68(3). 671–687.

Larson, Jeffrey & Stephen C. Billups. (2016). Stochastic derivative-free optimization using a trust region framework. Computational Optimization and Applications. 64(3). 619–645. 31 indexed citations

Watson, Layne T., Stephen C. Billups, John E. Mitchell, & David R. Easterling. (2013). A Globally Convergent Probability-One Homotopy for Linear Programs with Linear Complementarity Constraints. SIAM Journal on Optimization. 23(2). 1167–1188. 2 indexed citations

Billups, Stephen C., Jeffrey Larson, & Peter Gräf. (2013). Derivative-Free Optimization of Expensive Functions with Computational Error Using Weighted Regression. SIAM Journal on Optimization. 23(1). 27–53. 19 indexed citations

Gao, David Yang, et al.. (2011). Solving the canonical dual of box- and integer-constrained nonconvex quadratic programs via a deterministic direct search algorithm. Optimization methods & software. 28(2). 313–326. 5 indexed citations

Billups, Stephen C., Margaret Neville, Michael C. Rudolph, Weston W. Porter, & Pepper Schedin. (2009). Identifying significant temporal variation in time course microarray data without replicates. BMC Bioinformatics. 10(1). 96–96. 12 indexed citations

Watson, Layne T., et al.. (2007). Probability-one homotopy maps for mixed complementarity problems. Computational Optimization and Applications. 41(3). 363–375. 12 indexed citations

10.

Mocan, H. Naci, Stephen C. Billups, & Jody Overland. (2005). A Dynamic Model of Differential Human Capital and Criminal Activity. Economica. 72(288). 655–681. 66 indexed citations

11.

Billups, Stephen C., et al.. (2004). An iterative method for generalized set-valued nonlinear mixed quasi-variational inequalities. Journal of Computational and Applied Mathematics. 170(2). 423–432. 12 indexed citations

12.

Billups, Stephen C. & Katta G. Murty. (2000). Complementarity problems. Journal of Computational and Applied Mathematics. 124(1-2). 303–318. 90 indexed citations

13.

Billups, Stephen C.. (2000). Improving the robustness of descent-based methods for semismooth equations using proximal perturbations. Mathematical Programming. 87(1). 153–175. 8 indexed citations

14.

Billups, Stephen C., Steven P. Dirkse, & Michael C. Ferris. (1997). A Comparison of Large Scale Mixed Complementarity Problem Solvers. Computational Optimization and Applications. 7(1). 3–25. 88 indexed citations

15.

Billups, Stephen C.. (1996). Algorithms for complementarity problems and generalized equations. Minds at UW (University of Wisconsin). 53 indexed citations

16.

Billups, Stephen C.. (1996). Improving the Robustness of Complementarity Solvers Using Proximal Perturbations. 2 indexed citations

17.

Billups, Stephen C. & Michael C. Ferris. (1996). Convergence of an Infeasible Interior-Point Algorithm from Arbitrary Positive Starting Points. SIAM Journal on Optimization. 6(2). 316–325. 9 indexed citations

18.

Watson, Layne T., Stephen C. Billups, & Alexander P. Morgan. (1990). HOMPACK: A Suite of Codes for Globally Convergent Homotopy Algorithms. VTechWorks (Virginia Tech). 77 indexed citations

19.

Watson, Layne T., Stephen C. Billups, & Alexander P. Morgan. (1987). Algorithm 652. ACM Transactions on Mathematical Software. 13(3). 281–310. 294 indexed citations

20.

Watson, Layne T., Stephen C. Billups, & Alexander P. Morgan. (1985). HOMPACK: a suite of codes for globally convergent homotopy algorithms. Technical report No. 85-34. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information). 4 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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