Scholarly Presentations
Conference Presentations (Invited)
T. Giovannelli, G. Kent, L.N. Vicente. A stochastic gradient method for trilevel optimization. Portuguese American Optimization Workshop (PAOW), Horta, Azores, Portugal, June 2025.
T. Giovannelli, G. Kent, L.N. Vicente. How to address derivative calculation in stochastic bilevel optimization. 2024 INFORMS Annual Meeting, Seattle, WA, USA, October 2024.
T. Giovannelli, G. Kent, L.N. Vicente. Bilevel optimization with a multi-objective lower-level problem: Risk-neutral and risk-averse formulations. Modeling and Optimization: Theory and Applications (MOPTA) 2024, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, August 2024.
T. Giovannelli, O. Sohab, L.N. Vicente. The Limitation Of Neural Nets For Approximation And Optimization. 2023 INFORMS Annual Meeting, Phoenix, AZ, USA, October 2023.
T. Giovannelli, G. Kent, L.N. Vicente. Inexact Bilevel Stochastic Gradient Methods for Constrained and Unconstrained Lower-Level Problems. Modeling and Optimization: Theory and Applications (MOPTA) 2023, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, August 2023.
T. Giovannelli, G. Kent, L.N. Vicente. Bilevel Stochastic Methods for Optimization and Machine Learning: Bilevel Stochastic Descent and DARTS, 2022 INFORMS Annual Meeting, Indianapolis, IN, USA, October 2022.
T. Giovannelli, G. Kent, L.N. Vicente. Bilevel Stochastic Methods for Optimization and Machine Learning: Bilevel Stochastic Descent and DARTS, International Conference on Continuous Optimization (ICCOPT 2022), Lehigh University, Bethlehem, PA, USA, July 2022.
T. Giovannelli, G. Kent, L.N. Vicente. Bilevel Stochastic Methods for Optimization and Machine Learning: Bilevel Stochastic Descent and DARTS, 56th Annual Conference on Information Sciences and Systems (CISS), Princeton University, NJ, USA, March 2022.
T. Giovannelli, G. Liuzzi, S. Lucidi, F. Rinaldi. Derivative-free methods for mixed-integer nonsmooth constrained optimization. Modeling and Optimization: Theory and Applications (MOPTA 2021), Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, August, 2021.
L. Maccarrone, D. Ferone, T. Giovannelli (speaker), J. Panadero, A.A. Juan. A simheuristic algorithm for solving an integrated resource allocation and scheduling problem. Winter Simulation Conference 2018, Gothenburg, Sweden, December 9-12, 2018.
Seminars (Invited)
T. Giovannelli. Exploring Bilevel Optimization: Applications in Machine Learning. Blue Yonder Series on Optimization for Machine Learning, virtual talk, March 18, 2025.
T. Giovannelli. Using Multiple Levels, Objectives, and Models for Optimization in Engineering and Data Science. University of Cincinnati, Cincinnati, OH, USA, December 1, 2023.
T. Giovannelli. Using Multiple Models and Functions for Optimization in Data Science and Engineering. Rensselaer Polytechnic Institute, Troy, NY, USA, April 18, 2023.
T. Giovannelli. Addressing Bias and Fairness Issues in Artificial Intelligence. Pennsylvania State University Berks, Reading, PA, USA, February 20, 2023.
T. Giovannelli. Bilevel Stochastic Methods for Optimization and Machine Learning: Bilevel Stochastic Descent and DARTS, Sapienza University of Rome, Italy, December 2021.
Selected Talks
T. Giovannelli, G. Kent, L.N. Vicente. A stochastic gradient method for trilevel optimization. International Conference on Continuous Optimization (ICCOPT) 2025, University of Southern California, Los Angeles, CA, USA, July 2025.
T. Giovannelli, G. Kent, L.N. Vicente. A stochastic gradient method for trilevel optimization. Modeling and Optimization: Theory and Applications (MOPTA) 2025 Conference, Ponta Delgada, Azores, Portugal, June 2025.
A. De Santis, L. De Vito, T. Giovannelli, S. Lucidi, M. Messedaglia, M. Roma, F. Romano. A Simulation-based Optimization approach for the improvement of the hospital Emergency Department management. 2020 INFORMS Virtual Annual Meeting, November 8-13, 2020.
A. De Santis, T. Giovannelli, S. Lucidi, M. Messedaglia, M. Roma. An optimal non-uniform piecewise constant approximation of the patient arrival rate for a more efficient representation of the Emergency Department arrival process. Operational Research Applied to Health Services (e-ORAHS 2020), Virtual Conference, July 26-31, 2020.
A. De Santis, T. Giovannelli, S.Lucidi, M. Messedaglia, M. Roma. A simulation-based optimization approach for the improvement of the Emergency Department Management. EURO PhD Summer School on Operational Research for Value-based Healthcare, Instituto Superior Técnico, University of Lisbon, Portugal, September 1-8, 2019.
T. Giovannelli, S. Lucidi, M. Messedaglia, M. Roma. A Simulation-based Optimization approach for reducing the hospital Emergency Department overcrowding through the improvement of low-complexity patient flow. Operational Research Applied to Health Services (ORAHS 2019), Karlsruhe, Germany, July 28 - August 02, 2019.
T. Giovannelli. A simulation-based optimization approach for the improvement of the Emergency Department Management. Doctoral Consortium ORAHS (Operational Research Applied to Health Services) 2019, Karlsruhe, Germany, July 26-27, 2019.
L. De Vito, T. Giovannelli, S. Lucidi, M. Messedaglia, L. Palagi, A. De Santis, A. Nastasi, F. Romano, M. Roma. A simulation-based optimization approach for the improvement of the Emergency Department management of Policlinico Umberto I. Workshop Stitch@Diag, Rome, Italy, May 15, 2019.
Departmental Seminars
T. Giovannelli, Advancing Healthcare, Machine Learning, and Transportation through ISE Principles and Tools, Industrial & Systems Engineering Student Association (ISESA ), University of Cincinnati, Cincinnati, OH, USA, November 21, 2025.
T. Giovannelli, L. N. Vicente, Set-valued optimization, Optimization and Machine Learning (OptML) Group Seminar Series, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, March 23, 2023.
T. Giovannelli. How to make a personal academic website. Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, September 29, 2022.
T. Giovannelli. Bilevel optimization for fairness in machine learning. Optimization and Machine Learning (OptML) Group Seminar Series, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, November 17, 2021.
T. Giovannelli. Bilevel stochastic methods for optimization and machine learning: Bilevel stochastic descent and DARTS. PhD Seminar, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, November 11, 2021.
T. Giovannelli, O. Sohab. Ridge functions: Exploiting lower-dimensional structure. Optimization and Machine Learning (OptML) Group Seminar Series, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, March 10, 2021.
T. Giovannelli. Derivative-free methods for mixed-integer nonsmooth constrained optimization problems. Optimization and Machine Learning (OptML) Group Seminar Series, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, February 17, 2021.
T. Giovannelli. A black-box optimization approach for Emergency Department. Optimization and Machine Learning (OptML) Group Seminar Series, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, September 9, 2020.
T. Giovannelli. Siège Perilous (monthly meeting of the Continuous Optimization Research Group). Department of Computer, Control and Management Engineering , Sapienza University of Rome, Italy, April 18, 2019.
Conference Organizing Committee Membership
Co-Chair of the Organizing Committee for the Modeling and Optimization: Theory and Application (MOPTA) Conference 2025, Ponta Delgada, Azores, Portugal, June 17-20, 2025.
Co-Chair of the Organizing Committee for the Portuguese American Optimization Workshop (PAOW), Horta, Azores, Portugal, June 13-15, 2025.
Chair of the Organizing Committee for the Modeling and Optimization: Theory and Application (MOPTA) Conference 2024, Lehigh University, Bethlehem, PA, USA, August 14-16, 2024.
Chair of the Organizing Committee for the Modeling and Optimization: Theory and Application (MOPTA) Conference 2023, Lehigh University, Bethlehem, PA, USA, August 16-18, 2023.
Member of the Local Organizing Committee for the International Conference on Continuous Optimization (ICCOPT) 2022, Lehigh University, Bethlehem, PA, USA, July 23–28, 2022.
Organized/Chaired Conference Sessions
Chair of Serge Gratton’s plenary session. Modeling and Optimization: Theory and Applications (MOPTA) 2025 Conference, Ponta Delgada, Azores, Portugal, June 2025.
Chair of the “Advances in Multi-stage, Multi-level, and Multi-objective Optimization” session. Modeling and Optimization: Theory and Applications (MOPTA) 2025 Conference, Ponta Delgada, Azores, Portugal, June 2025.
Chair of two contributed sessions. Portuguese American Optimization Workshop (PAOW), Horta, Azores, Portugal, June 2025.
Chair of Dorit S. Hochbaum’s plenary session. Modeling and Optimization: Theory and Applications (MOPTA) 2024 Conference, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, August 2024.
Chair of the “Bilevel Stochastic Methods for Optimization and Learning” session. Modeling and Optimization: Theory and Applications (MOPTA) 2024 Conference, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, August 2024.
Chair of Fatma Kılınç-Karzan’s plenary session. Modeling and Optimization: Theory and Applications (MOPTA) 2023 Conference, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, August 2023.
Chair of the "Bilevel Stochastic Methods for Optimization and Learning" session. Modeling and Optimization: Theory and Applications (MOPTA) 2023 Conference, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, August 2023.
Chair of the Nonlinear Optimization Flash Session. 2022 INFORMS Annual Meeting, Indianapolis, IN, USA, October 2022.
Chair of the "Bilevel Stochastic Methods for Optimization and Learning" session. 2022 INFORMS Annual Meeting, Indianapolis, IN, USA, October 2022.
Chair of the "Stochastic Bilevel Optimization Methods" session. 2022 INFORMS Optimization Society Conference, Clemson University, Greenville, SC, USA, March 2022.
Chair of two sessions on "New Deterministic and Stochastic Methods for Derivative-Free Optimization". Modeling and Optimization: Theory and Applications (MOPTA) Conference 2021, Department of Industrial and Systems Engineering, Lehigh University, Bethlehem, PA, USA, August 2021.
Research Visits
Computer Science, Multimedia and Telecommunication Department at Universitat Oberta de Catalunya, Barcelona, Spain. Invited by Prof. Angel A. Juan (February 19-23, 2018).