Conference Presentations

International

Trafalis, T.B. and H. Ince, "Support Vector Machine for Regression and Applications to Financial Forecasting", Submitted to IEEE-INNS-ENNS International Joint Conference on Neural Networks, Como, Italy, July 24-27, 2000.

Malyscheff, A.M., T. B. Trafalis and S. Raman, "Determination of the Minimum Enclosing Zone using a Sequential Gradient Ascent Approach", submitted to 2000 Japan-USA Symposium on Flexible Automation, Ann Arbor, MI, USA, July 23-26, 2000.

Trafalis, T.B., "Robust and Interior Point Optimization Methods in Support Vector Machine Training", International Conference on Advances in Convex Analysis and Global Optimization, accepted, Pythagorion, Samos, Greece, June 5-9, 2000.

Trafalis, T.B., "Interior Point Optimization Methods in ANNS and Support Vector Machines Training", NIPS99, Workshop, Learning with SVMS: Theory and Applications, Breckenridge, CO, December 3, 1999

Kasap, S. and T.B. Trafalis, "Interior Point Methods in Engineering Optimization Problems & a New Approach to the Parameterization of the Central Trajectory", INFORMS, Philadelphia, PA, November 1999.

Trafalis T.B. and C. Jeyabalan, "Statistical Analysis of the Base Data from the WSR-88D Weather Radar and Description of Mesocyclone Features Using Neural and Radial Basis Function Networks", to be presented at ANNIE'99, St. Louis, MO, November 1999.

Trafalis, T.B., "Artificial Neural Networks Applied to Financial Forecasting", to be presented at ANNIE'99, St. Louis, MO, November 1999.

Trafalis, T. B., "A Hybrid Genetic Incremental Primal-Dual Algorithm for Design and Training of Multilayer Neural Networks", Proceedings of 5th International Conference of the Decision Sciences Institute, Athens, Greece, July 1999.

Trafalis, T.B. and S. Kasap, "A New Approach to the Parameterization of the Central Trajectory in the Primal Dual Interior Point Method for Linear and Convex Quadratic Programming", 1999.

Trafalis, T.B., “Neural Networks and Mathematical Programming”, invited paper for the Encyclopedia of Optimization, Kluwer Academic Publishers, forthcoming.

Trafalis, T.B., "Primal-Dual Methods for Nonlinear Programming and Applications to Neural Networks", Institut Gerard Desargues, Universite' Claude Bernard-Lyon I, October 1998.

Trafalis, T.B., "An Incremental Nonlinear Primal-dual Algorithm and Applications to Artificial Neural Networks Training", LSS'98, July 1998.

Trafalis, T.B. and M. Milatovic, "Utility Functions and Radial Basis Function Networks", 11th Hellenic Conference of Statistics, June 5-8, 1998.

Trafalis, T.B., "An Incremental Primal-dual Method for Nonlinear Programming Problems with Special Decomposable Structure", APMOD'98, Limassol, Cypress, March 11-13, 1998.

Trafalis, T.B. and M. Milatovic, "Radial Basis Function Networks for Effective Approximation of Multiple Criteria Decision Maker’s Utility Functions", presented at ANNIE’97, St Louis, MO, November 1997.

Trafalis, T.B. and Ya-Bing Liu, "Genetic Algorithms in Neural Network Training and Applications to Breast Cancer Diagnosis", presented at ANNIE’97, St. Louis, MO, November 1997.

Trafalis, T.B., N.P. Couellan, Po-I Li, G. Stumpf,C. Marzban, A. White, "An Affine Scaling Neural Network Training Algorithm for Prediction of Tornados" presented at ANNIE’97, St. Louis, MO, November 1997.

Trafalis, T.B. and N.P. Couellan, "A Stochastic Pprimal-Dual Technique for Nonlinear Programming", invited talk, to be presented at EURO XVI , July 12-15, 1998.

Trafalis, T.B., "Primal-Dual Techniques for Neural Network Training and Applications", National Center for Scientific Research Demokritos, Athens, GREECE, July 1997.

Trafalis, T.B. and N.P. Couellan, "An Incremental Primal-Dual Technique for Nonlinear Programming and Applications to Artificial Neural Network Training", International Symposium on Mathematical Programming, Lausanne, Switzerland, August 1997.

Milatovic, M. and T.B. Trafalis, "Approximation of Utility Functioning via Radial Basis Function Networks", invited talk, to be presented at the 1998 Spring INFORMS/CORS meeting, Montreal, CANADA, April 1998.

Trafalis, T.B. and N.P. Couellan, "An Incremental Nonlinear Primal-Dual Algorithm for Neural Network Training and Applications to Financial Forecasting", invited talk, to be presented at the 1998 Spring INFORMS/CORS meeting, Montreal, CANADA, April 1998.

Alkahtani, R. and T.B. Trafalis, "An Interior Point Algorithm for MOLP Problems", Joint International Meeting, EURO XV-INFORMS, Barcelona, Spain, July 1997.

Trafalis, T.B., N.P. Couellan and S.C. Bertrand, "Training of Supervised Neural Networks via a Nonlinear Primal-Dual Interior Point Method, Joint ICNN/IEEE, Houston, TX, June 1997.

Trafalis, T.B. and N.P. Couellan, "Feedforward Supervised Neural Networks for Stock Price Prediction", invited speaker, Joint International Meeting EURO XV -INFORMS, Barcelona, Spain, July 1997.

Trafalis, T.B. and T. Mishina, "A Circumscribed Ellipsoid Method for Multiobjective Programming and Applications to Financial Planning", invited, 19th Meeting of the EURO Working Group on Financial Modelling, Technical University of Crete, Chania, Greece, November 1996.

Trafalis, T.B., J.H. Zhu and M.M. Zaman, "Prediction of Shear Stress-Strain Behavior of Soil with Recurrent Neural Network", ANNIE ‘96, Saint Louis, MO, November 1996.

Trafalis, T.B., "Interior Point Methods for Global Optimization and Applications to Artificial Neural Network Training", invited talk, International Symposium on Mathematical Programming, Lausanne, Switzerland, August 1997.

Trafalis, T.B., and S. Kasap, "An Affine Scaling Scatter Search Approach for Continuous Global Optimization Problems", ANNIE ‘96, Saint Louis, MO, November 1996.

Trafalis, T.B. and T. A. Tutunji, "Training of Artificial Neural Networks via a Barrier Function with L₁ Norm", ANNIE ‘96, Saint Louis, MO, November 1996.

Trafalis, T.B., "Neural Network Training via Interior Point Methods", invited speaker at INFORMS, Vancouver, BC., July 1996.

Trafalis, T.B., "Interior Point Methods for Supervised Neural Network Training", invited talk, Blaise Pascal, Clermond Ferrand, France, July 1996.

Trafalis, T.B., "Deterministic and Stochastic Logarithmic Barrier Function Methods for Supervised Neural Network Training", invited talk, Department of Mathematics, University, , Sweden, June 1996.

Trafalis, T.B., "Interior Point Methods for Supervised Training of Artificial Neural Networks with Bounded Weights", invited talk, Technical University of Crete, Chania, Greece, May 1996.

Trafalis, T.B. and R.V. Parekh, "Primal-Dual Training of Artificial Neural Networks with an L_{_} Error", presented at ANNIE'95, St. Louis, MO, November 12-14, 1995.

Trafalis, T.B. and I. Al-Harkan, "A Continuous Scatter Search Approach for Global Optimization", APMOD'95, London, UK, April 1995.

Trafalis, T.B., "Interior Point Algorithms in Supervised Neural Networks", invited talk, APMOD'95, London, UK, 1995.

Trafalis, T.B. and T. Tutunji, "A Quasi-Newton Barrier Function Algorithm for Artificial Neural Network Training with Bounded Weights", presented at ANNIE ' 94, St. Louis, MO, 1994.

Trafalis, T.B. and T.L. Morin, Invited Session Chair, "Short Step and Long Step Path Following Algorithms in MOLP", TIMS XXXII, Anchorage, Alaska, June 12-15, 1994.

Kapur, K. C., Byung-Rae Cho, and T. B. Trafalis, "Evaluation of Customer Satisfaction by Quality Loss Functions", 1994 International Industrial Engineering Conference, IIE, Atlanta, GA.

Trafalis, T.B. and D.B. Sieger, "Logarithmic Barrier Adaptation in a Feedforward ANN", invited talk, APMOD-93, Budapest, Hungary, January 1993.

Trafalis, T.B. and D.B. Sieger, "Training of Multi-layer Feedforward ANN by a Logarithmic Barrier Function Adaptation Scheme", presented at ANNIE'93, Saint Louis, MO, November 1993.

Trafalis, T.B., "An Aspiration Interior Point Algorithm for Multiobjective Linear Programming", invited talk, VI^th CLAIO Conference, Mexico City, Mexico, October 5-9, 1992.

Trafalis, T.B., A.W. Haas, and T.L. Morin, "An Interior Point Algorithm for Multiple Objective Linear Programming," EURO XII/TIMS XXXI Joint International Conference, Helsinki, Finland, June 29-July 1, 1992.

Trafalis, T.B. and T.L. Morin, "Interior Point Methods in Multiobjective Convex Optimization", invited talk at the TIMS XXX-SOBRARO XXIII Joint International Meeting, Rio de Janeiro, Brazil, July 15-17, 1991.

Trafalis, T.B., "Interior Point Methods in Generalized Programming with Convex Preferences", invited talk at the XIV Systems Engineering Meeting, Santiago, Chile, July 8-12, 1991.

Trafalis, T.B. and T.L. Morin, "New Approaches to Multiple Objective Optimization", IFORS 90, Athens, Greece, June 1990.

Trafalis, T.B., "The Method of Centers in Multiobjective Optimization", invited presentation, University of Crete, Iraklion, Crete, Greece, July 1989.

National

Trafalis, T.B. and Suat Kasap, "An Overview of Mean Field Theory from Statistical Physics in Combinatorial Optimization", Cincinnati INFORMS, Ohio, May 2-5, 1999.

Trafalis, T.B. and Suat Kasap, "Differential-Algebraic Equations in Primal-Dual Interior Point Methods for Linear Programming Problems", Smart Engineering System Design: Neural Networks, Fuzzy Logic and Evolutionary Programming, ANNIE'98, St. Louis, MO, November 1-4, 1998.

Trafalis, T.B., "Optimizatioon in Neural Networks and Financial Engineering, Center for Engineering Optimization, University of Oklahoma, December 1997.

Trafalis, T.B., T. Terlaky, W.P. Warners and C. Ross, "Unsupervised Neural Network Training via a Potential Reduction Approach", INFORMS, Dallas, TX, Fall 1997.

Trafalis, T.B., and N.P. Couellan, "Nonlinear Primal-Dual Methods for Neural Network Training and Applications", INFORMS, Dallas, TX, Fall 1997.

Trafalis, T.B. and Tsutomu Mishina, "A Circumscribed Ellipsoid Method for Multiobjective Optimization and Applications", INFORMS, Dallas, TX, Fall 1997.

Trafalis, T.B. and N.P. Couellan, "Incremental Nonlinear Primal-Dual Methods for Supervised Neural Network Training", INFORMS, Dallas, TX, Fall 1997.

Trafalis, T.B. and N.P. Couellan, "Primal-Dual Interior Point Methods for Supervised Learning", invited talk, INFORMS, Dallas, TX October 1997.

Trafalis, T.B., N.P. Couellan and S.C. Bertrand, "Training of Supervised Neural Networks via a Primal-Dual Interior Point Method for Nonlinear Programming", MASECT ‘96.

Trafalis, T.B., I.M. Al-Harkan and S. Kasap, "A Hybrid Affine Scaling Scatter Search Approach for Continuous Global Optimization", INFORMS, San Diego, CA, invited talk, May 1997.

Trafalis, T.B., "Stochastic Logarithmic Barrier Functions and Applications to Neural Network Training", INFORMS, San Diego, CA, invited talk, May 1997.

Trafalis, T.B., J.P. Warners and T. Terlaky, "A Potential Reduction Method for Unsupervised Learning", INFORMS, San Diego, CA, invited talk, May 1997.

Trafalis, T.B., "Stochastic Interior Point Methods for Global Optimization", INFORMS, San Diego, CA, invited talk, May 1997.

Trafalis, T.B. and S. Kasap, "An Affine Scaling Scatter Search Approach for Global Optimization", invited presentation, INFORMS, Atlanta, GA, November 1996.

Trafalis, T.B. and N.P. Couellan, "Training of Artificial Neural Networks via Primal-Dual Interior Point Methods", invited speaker at INFORMS meeting, Atlanta, GA, November 1996.

Trafalis, T.B. and T.A.Tutunji, "A Stochastic Logarithmic Barrier Function for Global Optimization", invited speaker at INFORMS meeting, Atlanta, GA, November 1996.

Trafalis, T.B., "Neural Network Training via Interior Point Algorithms", invited talk, Conference on Network Optimization, University of Florida, Gainsville, FL, February 12-14, 1996.

Trafalis, T.B., and S.H. Vasilev, "On the Dynamics of Surfaces Under the Flows of Interior Point Method Fields," INFORMS, Washington, DC, May 1996.

Trafalis, T.B., invited session chair at INFORMS meeting, Washington, DC, May 1996.

Trafalis, T.B., N.P. Couellan, and T. Tutunji, "Interior Point Methods in Neural Network Training", INFORMS meeting, Washington, DC, May 1996.

Trafalis, T.B. and N.P. Couellan, "Neural Network Training via Quadratic Programming", Fifth INFORMS Computer Science Technical Section Conference, Dallas, TX, January 8-10, 1996.

Trafalis, T.B. and A. Maria, "Multiple Start Interior Point Methods for Nonconvex Optimization with a Convex Feasible Region", INFORMS meeting, New Orleans, October 1995.

Trafalis, T.B., K.C. Kapur, and B.R. Cho, "Quality Evaluation by Quadratic Loss Function", Proceedings of Quality Leadership Symposium, April 19-20, 1994.

Trafalis, T.B., "Neural Network Training via an Affine Scaling Algorithm", ORSA/TIMS, Spring, 1994, Boston, April, 1994.

Trafalis, T.B., S. Pulat, and N.P. Couellan, "Application of Interior Point Methods to a Project Management Problem", invited talk, ORSA/TIMS, Spring 1994, Boston, April, 1994.

Trafalis, T.B., "Neural Network Training via Interior Point Methods", session chair, ORSA/TIMS, Phoenix '93, November, 1993.

Trafalis, T.B., "A Homotopy Approach for Computing an Interior Point of a Convex Body", session chair, ORSA/TIMS, Phoenix '93, November, 1993.

Trafalis, T.B., "Interactive Interior Point Methods in Large Scale Multiobjective Optimization", invited talk, ORSA/TIMS, Phoenix '93, November, 1993.

Trafalis, T.B., "A Barrier Function Learning Algorithm in Supervised Learning", session chair, presented at the ORSA/TIMS meeting, Chicago, May 17, 1993.

Varanasi, B., B.L. Foote, and T.B. Trafalis, "A Surface Point Method for Linear Programming", ORSA/TIMS, Chicago, 1993, May 16-19, 1993.

Trafalis, T.B., "Recent Advances in Interior Point Methods", invited talk, Computer Science Seminar, University of Oklahoma, (February 1993).

Trafalis, T.B., A.W. Haas, and T.L. Morin, "Homotopies Computing Interior Points of Polyhedra", session chair, ORSA/TIMS San Francisco, San Francisco, California, November 1-4, 1992.

Trafalis, T.B., "A Method of Centers that Computes Pareto Solutions of Cooperative Games in Polynomial Time," session chair, presented at the TIMS/ORSA Joint National Meeting, Orlando, Florida, April 26-29, 1992.

Trafalis, T.B., "Interior Point Methods in Backpropagation Neural Networks", presented at the ORSA/TIMS Joint National Meeting, Anaheim, California, November 3-6, 1991.

Trafalis, T.B., T.L. Morin, and M.J. Kaiser, "Centers and Invariant Points of Convex Bodies", presented at the Joint National ORSA/TIMS Meeting, Philadelphia, October 1990.

Trafalis, T.B., T.L. Morin, and A. Haas, "An Implementation of an Interior Algorithm for Multiobjective Optimization", presented at the Joint National ORSA/TIMS Meeting, Las Vegas, NV, May 1990.

Trafalis, T.B., "Interior Point Algorithms and Multiobjective Optimization", School of Industrial Engineering, University of Oklahoma, March 7, 1990.

Trafalis, T.B., "Interior Point Algorithms and Multiobjective Optimization", Department of Management Sciences, University of Iowa, January 1990.

Trafalis, T.B., "Polynomial Time Path Following Algorithm of Centers for Linear Multiobjective Optimization", submitted to the Second Asilomar Workshop on Progress in Mathematical Programming which was held at the Asilomar Conference Center, Monterey, CA, February 1990.

Trafalis, T.B. and T.L. Morin, "An Efficient Face of a Polytope", presented at the Joint National ORSA/TIMS Meeting, New York, NY, October 1989.

Trafalis, T.B. and T.L. Morin, "Interior Algorithm for Multiobjective Optimization", presented at the Joint National ORSA/TIMS Meeting, Vancouver, B.C., May 1989.

Abhyankar, S., T.B. Trafalis, and T.L. Morin, "Maximal Facets of a Polytope: Parametrization of Hyperellipsoids and their Application in Multiple Objective Optimization", 1988 AMS-IMS-SIAM Summer Research Conference on Mathematical Developments Arising from Linear Programming, Bowdoin College, Bowdoin, Maine, June 25-July 1, 1988.

Berkovitz, L.D., T.L. Morin, and T.B. Trafalis, "Differential DP for Differential Games", TIMS/ORSA Washington DC Meeting, April 25-17, 1988.