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Rommel G. Regis, Ph.D.



Welcome to my home page! I am an Associate Professor in the Department of Mathematics at Saint Joseph's University. Below is my CV.

 

EDUCATION

CORNELL UNIVERSITY, Ithaca, NY
Ph.D. in Operations Research, August 2004
M.S. in Operations Research, May 2002
Major: Mathematical Programming (Optimization)
Minors: Applied Probability & Statistics, Computer Science

UNIVERSITY OF FLORIDA, Gainesville, FL
M.S. in Mathematics, May 1998

ATENEO DE MANILA UNIVERSITY, Quezon City, Philippines
B.S. in Mathematics, Honors Program, March 1993

 

ACADEMIC APPOINTMENTS

SAINT JOSEPH'S UNIVERSITY, Mathematics Department, Philadelphia, PA
Associate Professor, 2013 – present
Assistant Professor, 2007 – 2013

CORNELL UNIVERSITY, Cornell Theory Center, Ithaca, NY
Postdoctoral Associate, 2004 - 2007

CORNELL UNIVERSITY, Civil and Environmental Engineering, Ithaca, NY
Research Assistant, 2003 –  2004

CORNELL UNIVERSITY, Department of Computer Science, Ithaca, NY
Research Assistant, 2000 – 2003

CORNELL UNIVERSITY, School of Operations Research & Industrial Engineering, Ithaca, NY
Teaching Assistant, 1998 – 2000

UNIVERSITY OF FLORIDA, Mathematics Department, Gainesville, FL
Teaching Assistant, 1996 – 1998

ATENEO DE MANILA UNIVERSITY, Mathematics Department, Philippines
Assistant Instructor, 1993 – 1996

 

COURSES

  • MAT 313 Mathematical Optimization (Spring 2014, Spring 2012)
  • MAT 316 Operations Research (Spring 2010, Spring 2008)
  • MAT 321 Probability (Spring 2012, Fall 2009, Fall 2008)
  • MAT 322 Mathematical Statistics (Fall 2012, Fall 2011, Spring 2009)
  • ASC 301 Actuarial Probability (Fall 2013, Spring 2010)
  • MAT 226 Introduction to Linear Algebra (Spring 2011)
  • MAT 238 Differential Equations (Spring 2013)
  • CSC 370 Topics in Computer Science: Machine Learning and Data Mining (Fall 2007)
  • MED 553 Discrete Structures (Spring 2009)
  • MAT 161 Calculus I (Fall 2010)
  • MAT 128 Applied Statistics (Fall 2012, Fall 2011, Fall 2010, Fall 2009, Fall 2008, Fall 2007)
  • MAT 118 Introduction to Statistics (Spring 2010, Spring 2008)
  • MAT 130 The Whole Truth About Whole Numbers (Fall 2013, Spring 2012, Spring 2011)
  • MAT 131 Linear Methods (Spring 2014, Spring 2013)

 

RESEARCH INTERESTS

Engineering Optimization, Global Optimization, Nonlinear Programming, Derivative-Free Trust-Region Methods, Machine Learning, Combinatorial Optimization

 

CITATION INFORMATION

Google Scholar Profile (> 600 citations)

 

JOURNAL PUBLICATIONS

R. G. Regis. Constrained Optimization by Radial Basis Function Interpolation for High-Dimensional Expensive Black-Box Problems with Infeasible Initial Points. Engineering Optimization, Vol. 46, Issue 2, pp. 218-243, 2014. Online supplement.

R. G. Regis. Evolutionary Programming for High-Dimensional Constrained Expensive Black-Box Optimization Using Radial Basis Functions. IEEE Transactions on Evolutionary Computation, Vol. 18, Issue 3, pp. 326-347, 2014.

R. G. Regis. Particle Swarm with Radial Basis Function Surrogates for Expensive Black-Box Optimization. Journal of Computational Science, Vol. 5, Issue 1, pp. 12-23, 2014.

R. G. Regis and C. A. Shoemaker. A Quasi-Multistart Framework for Global Optimization of Expensive Functions using Response Surface Models. Journal of Global Optimization, Vol. 56, Issue 4, pp. 1719-1753, 2013.

R. G. Regis and C. A. Shoemaker. Combining Radial Basis Function Surrogates and Dynamic Coordinate Search in High-Dimensional Expensive Black-Box Optimization. Engineering Optimization, Vol. 45, Issue 5, pp. 529-555, 2013.

R. G. Regis. Stochastic Radial Basis Function Algorithms for Large-Scale Optimization Involving Expensive Black-Box Objective and Constraint Functions. Computers and Operations Research, Vol. 38, Issue 5, pp. 837-853, 2011.

R. G. Regis. Convergence Guarantees for Generalized Adaptive Stochastic Search Methods for Continuous Global Optimization. European Journal of Operational Research, Vol. 207, Issue3, pp. 1187-1202, 2010.

R. G. Regis and C. A. Shoemaker. Parallel Stochastic Global Optimization Using Radial Basis Functions. INFORMS Journal on Computing, Vol. 21, No. 3, pp. 411-426, Summer 2009.

S. Wild, R. G. Regis, and C. A. Shoemaker.  ORBIT: Optimization by Radial Basis Function Interpolation in Trust-Regions. SIAM Journal on Scientific Computing, Vol. 30, No. 6, pp. 3197-3219, 2008.

N. Blizniouk, D. Ruppert, C. A. Shoemaker, R. G. Regis, S. Wild and P. Mugunthan. Bayesian Calibration of Computationally Expensive Models Using Optimization and Radial Basis Function Approximation. Journal of Computational and Graphical Statistics, Vol. 17, No.  2, pp. 270-294, 2008.

R. G. Regis and C. A. Shoemaker. A Stochastic Radial Basis Function Method for the Global Optimization of Expensive Functions. INFORMS Journal on Computing, Vol. 19, No. 4, pp. 497-509, Fall 2007.

R. G. Regis and C. A. Shoemaker. Parallel Radial Basis Function Methods for the Global Optimization of Expensive Functions. European Journal of Operational Research, Vol. 182, Issue 2, pp. 514-535, 2007.

R. G. Regis and C. A. Shoemaker. Improved Strategies for Radial Basis Function Methods for Global Optimization. Journal of Global Optimization, Vol. 37, No. 1, pp. 113-135, 2007.

C. A. Shoemaker, R. G. Regis and R. C. Fleming. Watershed Calibration Using Multistart Local Optimization and Evolutionary Optimization with Radial Basis Function Approximation. Hydrological Sciences Journal – Journal Des Sciences Hydrologiques, Vol. 52, Issue 3 (Special issue: Hydroinformatics), pp. 450-465, 2007.

R. G. Regis and C. A. Shoemaker. Constrained Global Optimization of Expensive Black Box Functions Using Radial Basis Functions. Journal of Global Optimization, Vol. 31, No. 1, pp. 153-171, 2005.

P. Mugunthan, C. A. Shoemaker and R. G. Regis. Comparison of Function Approximation, Heuristic and Derivative-Based Methods for Automatic Calibration  of Computationally Expensive Groundwater Bioremediation Models. Water Resources Research, Vol. 41, W11427, doi:10.1029/2005WR004134, 2005.

R. G. Regis and C. A. Shoemaker. Local Function Approximation in Evolutionary Algorithms for Costly Black Box Optimization. IEEE Transactions on Evolutionary Computation, Vol. 8, No. 5, pp. 490–505, October 2004.

C. P. Gomes, R. G. Regis and D. B. Shmoys. An Improved Approximation Algorithm for the Partial Latin Square Extension Problem. Operations Research Letters, Vol. 32, No. 5, pp. 479–484, 2004.

 

PEER-REVIEWED CONFERENCE PROCEEDINGS

R. G. Regis. An Initialization Strategy for High-Dimensional Surrogate-Based Expensive Black-Box Optimization. In: L.F. Zuluaga and T. Terlaky (eds). Selected Contributions from the MOPTA 2012 Conference Series: Springer Proceedings in Mathematics & Statistics, Vol. 62, pp. 51-85, 2013.

R. G. Regis. Surrogate-Assisted Evolutionary Programming for High Dimensional Constrained Black-Box Optimization. In: T. Soule and J.H. Moore (eds). Genetic and Evolutionary Computation Conference (GECCO 2012) Companion Material Proceedings: 1431-1432.

C. P. Gomes, R. G. Regis and D. B. Shmoys. An Improved Approximation Algorithm for the Partial Latin Square Extension Problem. Proceedings of the 14th Annual ACM-SIAM Symposium on Discrete Algorithms (SODA ’03), Baltimore, Maryland, 2003.

C. A. Shoemaker and R. G. Regis. MAPO: Using a Committee of Algorithm-Experts for Parallel Optimization of Costly Functions. Proceedings of the 15th ACM Symposium on Parallelism in Algorithms and Architectures (SPAA ’03), San Diego, CA, 2003.

 

RECENT CONFERENCE PRESENTATIONS

R. G. Regis. A Radial Basis Function Algorithm for Constrained Expensive Multi-Objective Optimization. 4th International Conference on Engineering Optimization (EngOpt 2014). Lisbon, Portugal, September 2014.

R. G. Regis. An Adaptive and Locally-Biased Optimization Method Using Kriging Metamodels. 4th International Conference on Engineering Optimization (EngOpt 2014), poster presentation. Lisbon, Portugal, September 2014.

R. G. Regis and S. M. Wild. CONORBIT: Constrained Optimization by Radial Basis Function Interpolation in Trust Regions. Modeling and Optimization: Theory and Applications (MOPTA) 2014. Lehigh University, Bethlehem, PA, August 2014.

R. G. Regis. On the Properties of Simplex Gradients. Modeling and Optimization: Theory and Applications (MOPTA) 2014. Lehigh University, Bethlehem, PA, August 2014.

R. G. Regis. Handling Equality Constraints in Expensive Black-Box Optimization Using Radial Basis Function Surrogates. Modeling and Optimization: Theory and Applications (MOPTA) 2013. Lehigh University, Bethlehem, PA, August 2013.

R. G. Regis. Constraint Handling in Surrogate-Based Expensive Black-Box Optimization. EURO-INFORMS Joint International Meeting. Rome, Italy, July 2013.

R. G. Regis. Locally-Biased Efficient Global Optimization for Black-Box Optimization using Kriging Surrogates. INFORMS Annual Meeting, Phoenix, AZ, October 2012.

R. G. Regis. and S.M. Wild. A Derivative-Free Trust-Region Algorithm for Constrained, Expensive Black-Box Optimization Using Radial Basis Functions. 21st International Symposium on Mathematical Programming (ISMP). Berlin, Germany, August 2012.

R. G. Regis. Pushing the Limits of High-Dimensional Surrogate-Based Black-Box Optimization. Modeling and Optimization: Theory and Applications (MOPTA) 2012. Lehigh University, Bethlehem, PA, July 2012.

R.G. Regis. Surrogate-Assisted Evolutionary Programming for High Dimensional Constrained Black-Box Optimization. Genetic and Evolutionary Computation Conference (GECCO) 2012, poster presentation. Philadelphia, PA, July 2012.

R. G. Regis. Recent Developments in Surrogate-Based Algorithms for Constrained Black-Box Optimization. Journees de l'Optimisation 2012 (Optimization Days), Montreal, Canada, 2012.

R. G. Regis. Large-scale Optimization of Expensive Black-box Functions Subject to Expensive Black-Box Constraints. INFORMS Annual Meeting, Charlotte, NC, 2011.

R. G. Regis. Constrained Black-box Optimization Using Evolutionary Algorithms with Radial Basis Function Models. INFORMS Annual Meeting, Charlotte, NC, 2011.

R. G. Regis. Large-Scale Constrained Black-Box Optimization Using Radial Basis Functions. 12th INFORMS Computing Society (ICS) Conference, Monterey, CA, 2011.

R. G. Regis. Radial Basis Function Methods for the Optimization of Expensive Black-Box Objective Functions Subject to Expensive Black-Box Constraints. 2010 Modeling and Optimization: Theory and Application (MOPTA) Conference, Lehigh University, Bethlehem, PA, 2010.

R. G. Regis. Radial Basis Function Algorithms for Large-Scale Nonlinearly Constrained Black-Box Optimization. 20th International Symposium on Mathematical Programming (ISMP), Chicago, IL, 2009.

R. G. Regis. On the Convergence of Adaptive Stochastic Search Methods for Continuous Global Optimization. Joint Mathematics Meetings, Washington, DC, 2009.

R. G. Regis. Recent Developments in Derivative-Free Optimization. Joint Mathematics Meetings, Washington, DC, 2009.

 

PROFESSIONAL SOCIETIES

Institute for Operations Research and the Management Sciences (INFORMS)

Mathematical Optimization Society (MOPS)

Mathematical Association of America (MAA)

Sigma Xi Scientific Research Society

 

RECENT HONORS AND AWARDS

Michael J. Morris '56 Grant for Scholarly Research, Saint Joseph’s University, 2014

Summer Research Grant, Saint Joseph’s University, 2012

Faculty Merit Award for Research, Saint Joseph’s University, 2011

Faculty Merit Award for Teaching, Saint Joseph’s University, 2009

Project NExT Fellow, Mathematical Association of America (MAA), 2008-2009
Project NExT (New Experiences in Teaching) is a professional development program of the MAA.

 

OTHER PROFILES:

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