Welcome to the ORAHS International Seminar Series!
Our next seminar on OR applied to Health Services is scheduled for September 24th.
The ORAHS International Seminar Series aims to provide state-of-the-art research talks for scholars worldwide who are active in the nexus of OR/OM and healthcare applications. We believe these seminars will prepare and support graduate students and researchers who are active in the field with the newest research conducted worldwide. Moreover, they provide opportunities for academic members to get acquainted and find possible future collaborations.
How to join?
The seminars are planned monthly, every last Tuesday of the month, via Zoom in the late afternoon (Europe), morning (US), or evening (Asia/Pacific).
Register now!
You can register soon for the upcoming seminar on September 24th 2024.
Upcoming seminars
September 24th, 16:00-17:00 CEST - Prof. Dimitris Bertsimas (Massachusetts Institute of Technology, USA) - The R.O.A.D. to precision medicine
Title The R.O.A.D. to precision medicine
Abstract We propose a prognostic stratum matching framework that uses optimization in its core that addresses the deficiencies of Randomized trial data subgroup analysis and transforms Observational Data to be used as if they were randomized, thus paving the road or precision medicine. Our approach counters the effects of unobserved confounding in observational data by correcting the estimated probabilities of the outcome under a treatment through a novel two-step process. We applied our framework to observational data of patients with gastrointestinal stromal tumors (GIST) and validated our approach in an external cohort using the sensitivity and specificity metrics. We show that these recommendations outperformed those of experts in GIST. We further applied the same framework to randomized clinical trial (RCT) data of patients with extremity sarcomas. Remarkably, despite the initial trial results suggesting that all patients should receive treatment, our framework, after addressing imbalances in patient distribution due to the trial’s small sample size, identified a subset of patients with unique characteristics who may not require treatment. Again, we successfully validated our recommendations in an external cohort. Joint work with Dr. Antonis Margonis and Angelos Koulouras.
Bio Dimitris Bertsimas is the Boeing Professor of Operations Research and the Associate Dean of Business Analytics at the Sloan School of Management at the Massachusetts Institute of Technology. He is a member of the US National Academy of Engineering, an INFORMS fellow, recipient of the John von Neumann Theory Prize, the Frederick W. Lanchester Prize, the Erlang Prize, finalist of the Franz Edelman Prize four times, and the INFORMS President's Award, among many other research and teaching awards, supervisor of 91 completed and 26 current doctoral theses, co-author of seven graduate level textbooks, 300+ publications, editor of the INFORMS Journal on Optimization and co-founder of ten analytics companies and two non-profit foundations.
Registration You can register soon for the upcoming seminar on September 24th 2024.
Seminar archive
Recordings of our previous seminar talks are available below.
- June 25th 2024: Dr. Derya Demirtas, University of Twente, NL. Unlocking the Value of Extensive Data: Estimating spatial cardiac arrest risk to guide resource allocation decisions. The recording of the talk can be found here.
- May 28th 2024: Prof. Dionne Aleman, University of Toronto, Canada. Pandemic planning from A (agent-based simulation) to V (vaccine prioritization). The recording of the talk can be found here.
- April 30th 2024: Prof. Mónica Oliveira, University of Lisbon, Portugal. Advancing collaborative value modeling in health settings: From applications to novel tools. The recording of the talk can be found here.
- March 19th 2024: Dr. Ana María Anaya-Arenas, Université du Québec à Montréal, Canada. The Biomedical Sample Transportation Problem: routing commodities with very short lifespan. The recording of the talk will be uploaded soon.
- February 27th 2024: Prof. Christine Currie, University of Southampton, UK. A Generalisable Digital Twin Simulation Model of an Emergency Department. The recording of the talk can be found here.
- January 30th 2024: Prof. Vedat Verter, Queens University, Canada. Nurse Workload Balancing Using Real-Time Location Data. The recording of the talk can be requested via email.
- November 28th 2023: Dr. Melanie Reuter, University of Twente, NL. SPELL: Supporting emergency services with OR- and AI-based approaches.
- October 17th 2023: Prof. Nadia Lahrichi, Polytechnique Montreal, Canada. Integrating bed use and patient selection to the master surgical planning in the OR. The recording of the talk can be found here.
- September 26th 2023: Prof.Em. Warren Powell, Princeton University, USA. A Universal Framework for Sequential Decision Problems in Health Applications. The recording of the talk can be found here.
- June 27th 2023: Dr. Ana Viana, Polytechnic of Porto, Portugal. Kidney Exchange Programmes: a guided tour from 2004 to 2023. The recording of the talk can be found here, and the corresponding slides here.
- May 30th 2023: Prof. Brian Denton, University of Michigan, MI, USA. Predictive and Prescriptive Models for Early Detection of Prostate Cancer. The recording of the talk can be found here.
- April 25th 2023: Dr. Gréanne Leeftink, University of Twente, NL. Capacity sharing in neonatal care networks. The recording of the talk can be found here.
- March 28th 2023: Prof. Lerzan Örmeci, Koç University, Turkey. Appointment Scheduling with Patient Preferences. The recording of the talk can be found here.
- February 28th 2023: Prof. Jens Brunner, University of Augsburg, Germany. Resident scheduling in teaching hospitals with the use of quantitative methods. The recording of the talk can be found here.
- January 31st 2023: Prof. Retsef Levi, MIT, USA. Analytics Driven Innovation in Health Systems. The recording of the talk can be found here.
- December 6th 2022: Prof. Richard Boucherie, University of Twente, NL. Dynamic assignment of capacity and fair balancing of COVID-19 patients over hospitals. The recording of the talk can be found here.
- November 11th 2022: Prof. Margaret Brandeau, Stanford University, USA. Replacing Complex Models for Health Decision Making with Metamodels: Three Examples. The recording of the talk can be found here.
- October 4th 2022 (joint seminar with WORMS): Prof. Sonya Crowe and Dr. Zella King, University College London, UK. Using OR to make real-time aggregated predictions of hospital admission for emergency patients. The recording of the talk can be found here.
- June 28th 2022: Prof. Paul Harper and Michalis Panayides, Cardiff University, UK. Modelling Healthcare Behaviours: A Game Theoretic Model Between Emergency Departments and Emergency Medical Services Queueing Systems. The recording of the talk can be found here.
- May 31st 2022: Prof. Stefan Nickel, Karlsruhe Institute of Technology, Germany. Health Care Logistics in EMS: A real world case combining Analytics, Simulation and Optimization. The recording of the talk can be found here.
Organizing committee
The ORAHS international seminar series is organized by Amin Asadi, Aleida Braaksma, Derya Demirtas, Daniela Guericke, Gréanne Leeftink, Janusz Meylahn, Sebastian Rachuba, and Anne Zander of the CHOIR research center of the University of Twente (The Netherlands). For questions and inquiries feel free to reach out to us via email.
The ORAHS international seminar series is supported by its advisory board, consisting of Richard Boucherie (University of Twente, The Netherlands), and Erwin Hans (University of Twente, the Netherlands), and the ORAHS board.