About Me
My research program operates at the intersection of Microeconomic Theory, Operations Management, and Data Science. I view operational challenges through the lens of rigorous Game Theory — characterizing the strategic incentives of agents, whether they are firms, job seekers, or AI algorithms — to design markets that are efficient, transparent, and robust.
What distinguishes my work is a theory-driven empirical approach. I do not treat theory and data as separate silos; instead, I use economic theory to build the structural framework for analysis, and then employ advanced data science tools — including causal inference, simulations, and randomized control trials — to validate these models against real-world complexities. This allows me to derive managerial insights that are theoretically sound but empirically grounded.
The core goal of my lab is to engineer better systems. We tackle multifaceted problems in areas like hiring and screening processes, organ allocation, and online platforms. This philosophy extends to my teaching, where I apply the principles of mechanism design to create resilient pedagogical solutions.
This interdisciplinary rigor is reflected in my publications, which appear in leading journals across economics (Theoretical Economics, Games and Economic Behavior), operations (Management Science), and top-tier computer science conferences (NeurIPS, ACM EC, ICML).
My research is supported by the Israel Science Foundation (ISF), the Shamir Fellowship, and the Fulbright Postdoctoral Fellowship. Prior to joining Ben-Gurion University, I held postdoctoral fellowships at Tel Aviv University, Harvard University, and Stanford University. I hold a Ph.D. in Economics from the Technion.
Featured Paper
Title: The Gatekeeper Effect: The Implications of Pre-Screening, Self-Selection, and Bias for Hiring Processes
One-line pitch: Gatekeepers can alter who applies; under common conditions this lowers applicant quality and accuracy — this paper characterizes when, and how to fix it.
News
| Date | Update |
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| Oct 31, 2026 | Heading to the INFORMS Annual Meeting in San Francisco! On Wednesday, November 4, I will present "Batch Offering Under Uncertainty: A Common Value Stopping Game Model for Organ Allocation" (joint work with Vivian Bar Nir and Yuval Cornfeld) at 10:15 AM in the invited session WB41: Designing Allocation Mechanisms Under Informational Frictions (Auctions and Market Design, Moscone South-303). Come say hi! |
| Oct 31, 2026 | Yuval Peled will present "Experimental Investigation of Information Aggregation in Batching Mechanisms" in the same INFORMS session, right after me (Wednesday, November 4, 10:30 AM). Yuval, who joined the lab as a Ph.D. candidate this October, ran an online experiment showing that competition does not simply make decision-makers more aggressive: it changes the value of waiting and how much evidence people need before they act. |
| Oct 27, 2026 | Our proposal “Contractual Alignment for Delegated AI Agents” has been funded by the Ministry of Science and Technology under its 2026 Call for Research Proposals in Artificial Intelligence (topic: safety in the use of generative AI). I am the PI at BGU, with Prof. Nir Rosenfeld as project coordinator. The project runs 2027–2029. |
| Oct 07, 2026 | Welcome to the lab's 2026 M.Sc. cohort: Yarden Weiss, Sharona Isacov, Daniel Azoulay and Ron Halevi. Looking forward to the year ahead! |
| Sep 19, 2026 | Honored to receive Ben-Gurion University's Innovative Lecturer Award for the 2025–26 academic year, from the Unit for the Advancement of Teaching and Learning Quality, for the redesign of my course Game Theory and Agentic Design — where students learn game theory by building the strategic agents themselves. |
| Aug 03, 2026 | I've joined MathEconLib (then EconLib), the Axiom Math-supported effort to build machine-checked foundations for economics in Lean 4, as a core contributor. I'm contributing to the effort to formalize auction theory. |
| Jul 31, 2026 | Gave an invited talk — "LLM Based Workflow for Theory" — to the research department at a16z (virtual), on the verification-first workflow behind Theorist Toolbox: external verification, not model capability, is the binding design variable. |
| Jun 28, 2026 | I've joined the organizing committee of Data Science, Operations and Analytics, a new interdisciplinary conference on operations, industrial engineering, and analytics running as part of Mind-IL 2026 on October 26, 2026. The program features keynotes and tutorials by Edieal Pinker (Yale SOM), Assaf Zeevi (Columbia Business School), Yonatan Gur (Netflix), and Mor Armony (NYU Stern), with abstract submissions open through the Mind-IL portal (deadline Aug 26, 2026). Co-organized with Irad Ben Gal, Tal Raviv, and Ran Snitkovsky (TAU). Looking forward to it! |
| Jun 23, 2026 | New preprint out 📄 — "Theorist Toolbox: Tools for Agent-Based LLM-Assisted Economic Theory Research" is now on arXiv (arXiv:2606.22337). By 2026 large language models can produce and check nontrivial mathematics, so the binding constraint on machine-assisted theory is no longer production but trust — a fluent model will prove a false theorem as readily as a true one. I propose a verification-first protocol and three reusable methods that differ only in how the work is checked: a single disciplined pass, an adversarial prover–verifier pair, and a structured multi-agent project with a reviewer gate — worked through on a Groves/Pigouvian incentive mechanism for the Gans–Kominers eigengrade model of grade inflation. The takeaway: external verification, not model capability, is the design variable. |
| May 13, 2026 | Just back from the ORSIS 2026 Annual Meeting at the Technion (my Ph.D. alma mater), where I presented "Batch Offering Under Uncertainty: A Common-Value Stopping Game Model for Organ Allocation" in the Game Theory I session (joint work with Vivian Bar Nir and Yuval Cornfeld). Great to reconnect with the Israeli OR community — and the Haifa tour and dinner by the beach were a fitting close to day one. |
| Apr 28, 2026 | Exciting news — Yuval Peled has been accepted as a Ph.D. candidate in our lab, starting October 2026. Yuval's research focuses on strategic decision-making under competition in common value markets. Looking forward to the journey ahead! |
| Apr 28, 2026 | Congratulations to Bar Hoter and Ohad Kiperman on successfully defending their M.Sc. theses! Bar is now a Data Analyst at Vi, and Ohad is now a Data Scientist at Zefr. Wishing them both continued success in their next chapters. |
| Apr 28, 2026 | Congratulations to lab members on outstanding academic recognition: Oriya Sheetrit, Ohad Kiperman, and Gal Ram received the Dean's Honors for their M.Sc. studies, and Yuval Doron received the Rector's Honors for her M.Sc. studies. A wonderful reflection of the lab's hard work. |
| Mar 30, 2026 | I am happy to share that I have been promoted to Senior Lecturer (corresponding to an early U.S. Associate Professor) at the Dept. of Industrial Engineering & Management, Ben-Gurion University of the Negev. The promotion was retroactively conferred since June 2025. |
| Dec 16, 2025 |
I will be co-chairing Mid-Chain 2026 at BGU — an inaugural event connecting academic researchers with industry innovators. We are creating a space to discuss the structural and operational future of the blockchain ecosystem. Stay tuned for updates! |
| Nov 07, 2025 | We're proud to celebrate an exciting achievement in our research group! Bar Hoter has been awarded the KKL Fellowship for Sustainability and Climate Change, in memory of Goldman Sonnenfeld. This prestigious fellowship recognizes academic excellence and contributions to research in the fields of sustainability, environment, and climate change. The committee highlighted Bar's outstanding performance and his commitment to advancing impactful research. Congratulations, Bar! We're so proud of you and wish you continued success in your research journey. |
| Nov 07, 2025 | Yesterday was the first lesson of my revised course in game theory and agentic design. The course comprises an introduction for game theory and a hands-on workshop in agent design. In the GT part, we studied how to model real world scenarios into a formal game, what is an equilibrium, and started discussing how to find it. In the agent design workshop, we learned what are agents, how they differ from previous programming paradigms and some of the tools available to construct agentic workflows. Next week the students will present their first "job-seeking" agent, designed to help job seekers find and secure a position. |
| Oct 17, 2025 | We are now after the INFORMS Annual Meeting (Atlanta, GA), where I presented "Strategic Behavior and Uncertainty in Allocation Markets: Insights from Online Experiments." It was great to meet friends and colleagues. Old and new. Discuss research, and enjoy a wonderful venue. |
| Sep 30, 2025 | Our paper "Strategic Behavior in Crowdfunding: Insights from a Large-Scale Online Experiment.", led by MSc students Bar and Din, was accepted to WINE 2025. See you in December! |
| Jul 15, 2025 | Congrats to Lab Cohort 2025 on the beginning of a new academic year! |
My Background
Appointments, training and industry, newest first.
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2025 –Senior LecturerBen-Gurion University of the Negev
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- Promoted; corresponds to early U.S. Associate Professor. Founder and PI, Game Theory and Agent Design Lab
- Department of Industrial Engineering and Management; member, Statistics and Data Analysis Program
- Faculty lead for accelerated MSc programs; founded and led the ‘Young Researchers (Hetz)’ track (2024–2026)
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2022 – 2025LecturerBen-Gurion University of the Negev
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- Tenure-track rank; corresponds to U.S. Assistant Professor
- Department of Industrial Engineering and Management
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2021 – 2022Postdoctoral Research FellowTel Aviv University
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- School of Mathematical Sciences
- Hosts: Prof. Eilon Solan and Prof. Ehud Lehrer
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2020 – 2021Postdoctoral Research FellowHarvard University
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- Center of Mathematical Sciences and Applications
- Host: Prof. Scott Duke Kominers
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2019 – 2020Postdoctoral Research Fellow (Fulbright Scholar)Stanford University
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- Management Science and Engineering
- Host: Prof. Itai Ashlagi
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2019Ph.D. in EconomicsTechnion – IE&M (now Data and Decision Sciences)
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- Advisors: Prof. Rann Smorodinsky & Prof. Itai Arieli
- Dissertation: “Social Learning in Adaptive Environments”
- Keiden Prize for Graduate Students (2018)
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2018Ph.D. Research InternCornell Tech, Social Technologies Lab
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- Social computing research on crowd-based news evaluation and online behavior
- Host: Prof. Mor Naaman
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2015M.A. in EconomicsHebrew University of Jerusalem
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- Research track (joint with TAU)
- Advisor: Dr. Liad Blumrosen
- Thesis: “To Pool or Not to Pool? On Mining Competition and Transfer Fees in Bitcoin”
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2013 – 2015Senior Data ScientistTaboola, Tel Aviv
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- Recommendation and content-ranking systems at scale
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2009B.A. in Economics & BusinessHebrew University of Jerusalem
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- Magna cum Laude, Dean’s List for Honors Students
My Research
Published work, papers under review, and working papers. Each entry states the question the paper asks; open it for the short answer and a summary.
Journal Articles
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Journal
Koren, M. (2026). "The Gatekeeper Effect: The Implications of Pre-Screening, Self-Selection, and Bias for Hiring Processes". Management Science, 72(1), 426–441.
Does adding a pre-screening stage to hiring improve the pool of people who apply?
Show a short answer
Not necessarily. An accurate gatekeeper lowers the cost of applying for marginal candidates and makes everyone less selective about whether to apply, so the pool can get worse and the process less accurate. When the screening signal is biased against a group, qualified members of that group are the ones deterred, which makes the bias self-perpetuating; affirmative action can break the cycle.
Show summary
Summary: This paper analyzes how pre-screening stages ("gatekeepers") in hiring can paradoxically lower the average quality of the applicant pool by altering candidates' self-selection incentives and perpetuating historical biases.
Tools & Methodologies: Game Theory, Algorithmic Screening, Information Design, Self-Selection Models.
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Journal
Danino, G., Koren, M., & Madmon, O. (2026). "The Multi-BMBY Mechanism: Proportionality-Preserving and Strategyproof Ownership Restructuring in Private Companies". Journal of Economics & Management Strategy, 35(1), 50–58.
How can the co-owners of a private company reduce their number without anyone gaming the process?
Show a short answer
With a strategyproof, budget-balanced mechanism that extends the classic buy-me-buy-you rule to many owners. It preserves proportionality among those who remain, lets the parties fix the final ownership structure in advance, and applies to recapitalizations, buyouts and share buybacks.
Show summary
Summary: We develop a practical, strategy-proof mechanism for resolving ownership deadlocks in contexts like joint ventures or supply chain partnerships, ensuring efficient and fair outcomes.
Tools & Methodologies: Mechanism Design, Game Theory, Corporate Finance.
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Journal
Berkovich, E., Shapira, S., Koren, M., Talmon, N., & Nitzan, D. (2026). "Reimagining Israel's Food System: Balancing Mediterranean Diet Recommendations with National Food Security, Sovereignty and Resilience". Israel Journal of Health Policy Research, 15(1), Article 6.
Can Israel feed itself along Mediterranean-diet lines, and where is it exposed?
Show a short answer
Only partly. Combining FAO food balance sheets with CBS data, we find heavy import dependency in cereals, fish, nuts and added fats, and a supply that undersupplies plant-based proteins relative to the diet’s recommendations. Shifting toward locally produced plant-based food and feed serves health, food security and resilience at once.
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Summary: Examines Israel's food system through the lens of the Mediterranean Diet, combining FAO Food Balance Sheets and CBS data to quantify import-dependency ratios and alignment with MD guidelines. Documents heavy import dependency in cereals, fish, nuts, and added fats, and shows that the current supply deviates from MD recommendations — notably undersupplying plant-based proteins. Argues for a shift toward locally produced, plant-based food and feed as a joint lever for public health, food security, resilience, and sustainability.
Tools & Methodologies: Food Systems Analysis, Operations Management, Public Policy, Resilience, Mediterranean Diet, Import Dependency.
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Journal
Arieli, I., Koren, M., & Smorodinsky, R. (2024). "Information Aggregation in Large Collective Purchases". Economic Theory, 78(1), 295–345.
When many people decide whether to join a collective purchase or a crowdfunding campaign, does the outcome reveal what they collectively know?
Show a short answer
Never fully. Because contributions bind only if the campaign succeeds, pessimists over-participate, and the correctness of the collective decision stays strictly bounded below one even with arbitrarily many participants, against the Condorcet intuition. When the entrepreneur sets price and threshold endogenously, the outcome becomes asymptotically efficient.
Show summary
Summary: This work examines how information from individual consumers is aggregated in settings like group buying or crowdfunding, analyzing the efficiency of collective decision-making under uncertainty.
Tools & Methodologies: Information Aggregation, Game Theory, Collective Action.
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Journal
Cohen, A., Deligkas, A., & Koren, M. (2023). "Learning Approximately Optimal Contracts". Theoretical Computer Science, 980, 114219.
Can a principal learn a near-optimal contract for an agent whose costs she does not know?
Show a short answer
Yes, by treating contracts as arms in a bandit problem. For risk-averse agents we introduce “monotone-smooth” contracts, a class rich enough to approximate the optimum yet discretizable finely enough that a learning algorithm converges with provable guarantees.
Show summary
Summary: This research connects contract theory with machine learning by introducing algorithms that enable a principal to learn the optimal contract to offer an agent whose cost structure is initially unknown.
Tools & Methodologies: Algorithmic Mechanism Design, Contract Theory, Machine Learning, Online Learning.
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Journal
Arieli, I., Koren, M., & Smorodinsky, R. (2022). "The Implication of Pricing on Social Learning". Theoretical Economics, 17(4), 1761-1802.
When a seller sets prices while consumers learn from each other’s choices, does the market eventually learn the product’s quality?
Show a short answer
It depends on the tails of private beliefs, not on whether signals are bounded. Learning fails exactly when margins vanish, that is, when extreme private beliefs have density approaching zero. Strategic pricing overturns the textbook link between bounded signals and herding, and more informative signals need not help once prices adjust.
Show summary
Summary: This paper investigates how a manager can use dynamic pricing as an operational lever to learn consumer demand, identifying conditions under which a firm can overcome informational herds and guarantee long-run learning.
Tools & Methodologies: Social Learning, Game Theory, Dynamic Pricing, Information Design.
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Journal
Koren, M., & Mueller-Frank, M. (2022). "The Welfare Costs of Informationally Efficient Prices". Games and Economic Behavior, 131, 186-196.
If prices aggregate information efficiently, is society better off?
Show a short answer
No. Informationally efficient prices guarantee that beliefs converge, but they strictly lower welfare compared with fixed prices, a Hirshleifer-type effect: a more informative aggregate statistic can leave everyone worse off.
Show summary
Summary: We demonstrate a critical managerial tradeoff by showing that operational policies designed to be "informationally efficient" can paradoxically reduce short-term profitability and overall welfare.
Tools & Methodologies: Information Economics, Game Theory, Market Efficiency.
Submitted & Working Papers
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Submitted / Working
Koren, M. "Theorist Toolbox: Tools for Agent-Based LLM-Assisted Economic Theory Research". (Working paper, arXiv:2606.22337, 2026).
If language models can now produce and check nontrivial mathematics, what still limits machine-assisted theory?
Show a short answer
Trust, not production: a fluent model will prove a false theorem as readily as a true one. The toolbox is a verification-first protocol with three methods that differ only in how the work is checked (a disciplined single pass, an adversarial prover–verifier pair, and a multi-agent project with a reviewer gate), worked through on a grade-inflation mechanism-design problem.
Show summary
Summary: Proposes a verification-first protocol for doing economic theory with large language models, instantiated as three reusable methods that differ only in how the work is checked: a single disciplined pass, an adversarial prover–verifier pair, and a structured multi-agent project with a reviewer gate. Demonstrated on designing a Groves/Pigouvian incentive mechanism for the Gans–Kominers eigengrade model of grade inflation. The methodological takeaway: external verification, not model capability, is the design variable.
Tools & Methodologies: LLM-Assisted Theory, Mechanism Design, Adversarial Verification, Multi-Agent Workflows.
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Submitted / Working
Peled, Y., & Koren, M. "Information Aggregation and Strategic Urgency in Common Value Markets: Experiment and Analysis". (Submitted to AAMAS 2027).
When competitors race to act on an item of common but uncertain value, how much information do they sacrifice for speed?
Show a short answer
We model competition in common-value markets, derive the equilibrium trade-off between urgency and accuracy, and test it in a large online experiment that measures decision speed and ex-post decision quality under varying competitive pressure. The setting mirrors organ allocation, where offers are decided fast and under competition.
Show summary
Summary: A model of competition in common value markets whose equilibrium predictions are tested in a large-scale online experiment, measuring how competitive pressure trades off decision speed against the quality of information aggregation. Based on Yuval Peled's MSc thesis.
Tools & Methodologies: Game Theory, Online Experiments, Information Aggregation, Common-Value Markets.
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Submitted / Working
Koren, M., & Levin, S. "Saying, Planning, Doing: Grounding Mechanisms and Stated-Intent Consistency of LLM Agents in Settlers of Catan". (Submitted to AAMAS 2027).
Do LLM agents do what they say they will do?
Show a short answer
We put them in Settlers of Catan, a multi-player negotiation game, measure how consistently stated intentions match subsequent play, and compare grounding mechanisms that tie talk to action. The gap between saying, planning and doing is the object of study.
Show summary
Summary: Tests whether LLM agents do what they say in Settlers of Catan, a multi-player negotiation game: how consistent are stated intentions with actual play, and which grounding mechanisms close the gap.
Tools & Methodologies: LLM Agents, Multi-Agent Systems, Game Theory, Agent Evaluation.
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Submitted / Working
Koren, M., & Taitler, A. "Goldstein Equilibrium for Two-Player Lipschitz Games: Theory and Certification". (Submitted to AAMAS 2027).
What does equilibrium mean when payoffs are only Lipschitz, so gradients may not exist?
Show a short answer
We define Goldstein equilibrium, a stationary-point notion built on the Goldstein subdifferential, for two-player Lipschitz games, develop its basic theory, and give procedures that certify a candidate profile as an approximate equilibrium.
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Summary: Defines Goldstein (stationary-point) equilibria for two-player games with Lipschitz payoffs and gives procedures to certify them.
Tools & Methodologies: Game Theory, Nonsmooth Optimization, Equilibrium Computation, Certification.
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Submitted / Working
Hermelin, D., Koren, M., Pinedo, M. L., & Shabtay, D. "On the Complexity and the Price of Fairness in Repetitive Scheduling Problems". (Submitted to Journal of Scheduling).
How hard is it to schedule one machine so that every client is treated fairly day after day, and what does fairness cost?
Show a short answer
n clients each submit a job every day over q days, and each must receive a quality of service above a threshold. We resolve several open questions on the problem’s computational complexity and on the price of fairness, and chart the ones that remain.
Show summary
Summary: Revisits fair solutions to repetitive single-machine scheduling: n clients each submit one job per day over q days, and the schedules must give every client a quality of service (e.g., total waiting or completion time over the horizon) above a threshold. Resolves several open questions on the problem's computational complexity and on the price of fairness, and maps directions for further work.
Tools & Methodologies: Scheduling Theory, Computational Complexity, Fairness, Price of Fairness, Approximation Algorithms.
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Submitted / Working
Sheetrit, O., Koren, M., & Shperberg, S. "Fairness-Constrained Actor–Critic for Multi-Agent Reinforcement Learning". (Submitted to AAAI; under review).
Can cooperating learning agents be trained to share outcomes fairly rather than only maximize the total?
Show a short answer
We add a fairness constraint to actor–critic training for multi-agent reinforcement learning: a real-time measure of the performance gap between agents drives dual updates that steer the group toward balanced, cooperative policies, including in asymmetric environments.
Show summary
Summary: Develops a fairness-constrained actor–critic method for multi-agent reinforcement learning; Koren leads the economic-theory aspects of the work.
Tools & Methodologies: Multi-Agent Reinforcement Learning, Fairness, Actor–Critic Methods.
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Submitted / Working
Koren, M. "Build the Player: Teaching Game Theory by Designing Strategic Agents". (Revise & Resubmit, major revision, at INFORMS Transactions on Education).
What happens when students learn game theory by building the players instead of using AI as a copilot?
Show a short answer
Every latent object, from beliefs and best responses to reservation values and equilibria, has to be made explicit in code. Measured against a closed-book, AI-free exam, students who spent a third of the course building agents passed with no failures, and some caught their AI assistants’ mistakes.
Show summary
Summary: A sole-authored pedagogical approach that teaches game theory by having students design and build strategic agents, turning abstract equilibrium concepts into hands-on engineering of the players themselves.
Tools & Methodologies: Game Theory, Pedagogy, Agent Design.
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Submitted / Working
Kang, J., Koren, M., Monachou, F., & Ashlagi, I. "Counterbalancing Learning and Strategic Incentives in Allocation Markets". (Major Revision at Manufacturing & Service Operations Management).
Why are viable kidneys discarded, and can the offering process be redesigned?
Show a short answer
Sequential offering lets each center’s rejection signal “bad organ” to the next, producing herding and high discard rates. We design incentive-compatible batched voting mechanisms that aggregate centers’ private information through majority voting and strictly improve allocation correctness, as long as private signals are at least as informative as the prior.
Show summary
Summary: This work designs mechanisms that balance information acquisition and strategic incentives in dynamic allocation markets (e.g., organ/platform markets). It proposes a novel batch-based voting mechanism to mitigate herd behavior and improve allocation efficiency.
Tools & Methodologies: Mechanism Design, Game Theory, Social Learning, Market Design, Simulations.
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Submitted / Working
Ban, A., & Koren, M. "Sequential Fundraising and Mutual Insurance". (Revise & Resubmit at JPE-Micro).
In sequential fundraising, do early contributors act on what they know?
Show a short answer
Not always. Forward-looking contributors invest unconditionally to insure later ones and delegate the pivotal decision to them, producing cascade dynamics unlike classical backward-looking herds. We characterize when this risk-sharing creates inefficiency and which design fixes restore it.
Show summary
Summary: Characterizes when sequential fundraising with risk-sharing generates inefficiency and provides implementable design fixes; delivers testable comparative statics.
Tools & Methodologies: Game Theory, Mechanism Design, Crowdfunding, Social Learning.
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Submitted / Working
Koren, M., Bar Nir, V., & Cornfeld, Y. "Batch Offering Under Uncertainty: A Common Value Stopping Game Model for Organ Allocation". (Submitted to AAMAS 2027; presented at ORSIS 2026, Technion).
Would offering an organ to several centers at once, rather than one by one, improve allocation?
Show a short answer
We cast batch offering as a common-value stopping game: centers receive private signals over time and trade off waiting for information against losing the organ. A symmetric threshold equilibrium exists; larger batches raise the chance of a mistake but lower waste and shorten resolution. Numerically, signal accuracy dominates batch size as a welfare lever.
Show summary
Summary: Models the proposed switch to batch offering in organ allocation as a common-value variant of the Dynkin (1969) stopping game. Agents compete over an offering of unknown value and receive private signals over time; each must trade off waiting for more information against losing the offer to a competitor. We prove existence of a symmetric threshold equilibrium in the binary-signal case, characterize the asymptotic barrier strategy (its velocity rises with signal accuracy), and show numerically that larger batches raise the probability of a mistake, lower the probability of waste, and shorten time-to-resolution in the good state. Translating the parameters into policy levers (batch size, diagnostic quality, organ preservation, supply), we find that signal accuracy dominates batch size for welfare — the success of batch offering depends less on how many centers compete and more on how good their information is.
Tools & Methodologies: Stopping Games, Common-Value Auctions, Mechanism Design, Organ Allocation, Numerical Equilibrium Analysis.
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Submitted / Working
Doron, Y., Koren, M., & Kulik, A. "A Graph-Based Mechanism for Assigning Displaced Individuals". (Working paper).
How should displaced families be assigned to shelters so that communities are not torn apart?
Show a short answer
Treat the population as a weighted social network and partition it into capacity-constrained groups that minimize severed ties. The cut-minimizing assignment is stable, and a cycle-based heuristic scales to realistic instances.
Show summary
Summary: Introduces a graph-theoretic resettlement mechanism that partitions a weighted social network into capacity-constrained groups while minimizing severed social ties; proves the cut-minimizing assignment is stable and develops a scalable cycle-based heuristic with strong empirical performance.
Tools & Methodologies: Network Optimization, Matching & Allocation, Minimum-Cut Partitioning, Refugee/IDP Resettlement, Heuristics.
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Submitted / Working
Horowitz, S., Koren, M., & Doron, Y. "Placement Games with Threshold-Linear Congestion: A Graphical Potential-Game Approach to Decentralized Assignment". (Working paper).
What if displaced people choose localities themselves while caring about neighbors and crowding?
Show a short answer
The decentralized assignment is an exact potential game with threshold-linear congestion, so pure Nash equilibria exist and best-response dynamics converge; we bound the price of anarchy of the resulting placements.
Show summary
Summary: Models decentralized assignment of agents to localities over a weighted social network as an exact potential game with threshold-linear congestion; establishes existence and convergence of pure Nash equilibria and tight price-of-anarchy bounds for socially-aware resettlement. Extends S. Horowitz's BSc final project.
Tools & Methodologies: Potential Games, Congestion Games, Price of Anarchy, Decentralized Mechanism Design.
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Submitted / Working
Tzidkolov, S., & Koren, M. "The KAS250 Kidney Offer Acceptance Decline: Behavior or Mechanism? Adjudicating the Post-Reform Fall in Offer Acceptance and Its Operational Cost in Donation After Circulatory Death". (Submitted to American Journal of Transplantation).
After the 2021 KAS250 reform, did transplant centers become reluctant to accept kidneys, or do longer match runs explain the drop mechanically?
Show a short answer
Both, and the behavioral part is larger than a naive depth adjustment implies. At rank 1, where match-run depth cannot operate, acceptance fell from 24.1% to 14.1%. Genuine reluctance accounts for roughly 40% of the decline versus the 19% that depth alone suggests, and broader sharing independently raised discard, concentrated in DCD kidneys.
Show summary
Summary: Per-offer kidney acceptance fell by roughly half after KAS250 replaced DSA/regional allocation with a 250-nautical-mile circle in March 2021. Using 67 million OPTN STAR offer decisions (2018–19 vs. April 2021–April 2023), the paper decomposes the decline into a mechanical match-run-depth component and genuine center reluctance. At rank 1, where depth cannot operate, acceptance fell from 24.1% to 14.1% (adjusted OR 0.53), and provisional-yes-to-final conversion fell 42%; genuine reluctance (~40%) exceeds what a naive depth adjustment implies (~19%). Broader sharing independently raised discard, concentrated in DCD kidneys.
Tools & Methodologies: Registry Data (OPTN STAR), Before/After and Difference-in-Differences Analysis, Logistic Regression, Organ Allocation Policy.
Refereed Conference Papers
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Proceedings
Amir, D., Hoter, B., Koren, M. (2025). "Strategic Behavior in Crowdfunding: Insights from a Large-Scale Online Experiment". WINE 2025. [Acceptance: 29.8%]
Do people in crowdfunding behave as the theory predicts?
Show a short answer
Largely yes. In an online experiment with 1,368 participants, higher signal accuracy reduced risk aversion and increased mutual insurance, as predicted. Unexpectedly, higher thresholds amplified risk aversion, pointing to cognitive constraints the standard model omits.
Show summary
Summary: This student-led publication serves as a proof-of-concept for translating a core research agenda into a productive, student-driven research program. It directly validates theoretical predictions from earlier work.
Tools & Methodologies: Online Experiments, Behavioral Economics, Game Theory, Crowdfunding Platforms.
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Proceedings
Havin, M., Wharton Kleinman, T., Koren, M., Goldstein, A., & Dover, Y. (2025). "Can (A)I Change Your Mind?". CogSci 2025.
Can an AI change your mind?
Show a short answer
An experimental study of AI persuasion, measuring whether and how much people’s opinions move after exchanges with an AI interlocutor. I designed, ran and analyzed the experiment with the team.
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Proceedings
Hoter, B., Koren, M., Nitzan, D., Shapira, S., & Talmon, N. (2025). "Enhancing Food Security with Blockchain: Developing a Web3 Application to Strengthen National Food System Resilience". IEEE ISCC 2025.
Can a blockchain platform help a country monitor and strengthen its food security?
Show a short answer
We built a Web3 application that tracks food-system resilience in Israel, simulates disaster preparedness and evaluates waste-reduction strategies. One finding: recovering about a fifth of current food waste could eliminate national food insecurity.
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Proceedings
Horowitz, G., Sommer, Y., Koren, M., & Rosenfeld, N. (2024). "Classification Under Strategic Self-Selection". ICML 2024.
What happens to a classifier when people decide whether to apply based on how it treats them?
Show a short answer
Applicants self-select on the classifier’s reported precision, so the learner induces its own distribution shift. A fully strategic learner can steer which groups apply; fairness constraints such as statistical parity tame that power, and a strategically unaware learner incurs unbounded error.
Show summary
Summary: Develops entry-aware classification under endogenous applicant pools and proposes screening rules that are robust to self-selection.
Tools & Methodologies: Machine Learning, Algorithmic Game Theory, Causal Inference, Fairness in AI.
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Proceedings
Cohen, A., Deligkas, A., & Koren, M. (2022). "Learning Approximately Optimal Contracts". SAGT 2022.
Can a principal learn a near-optimal contract for an agent whose costs she does not know?
Show a short answer
Yes. This is the conference version of the Theoretical Computer Science article above, invited to the journal as one of the top SAGT 2022 papers: contracts as bandit arms, with monotone-smooth contracts making the problem learnable.
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Proceedings
Kang, J., Koren, M., Monachou, F., & Ashlagi, I. (2021). "Counterbalancing Learning and Strategic Incentives in Allocation Markets". NeurIPS 2021.
Why are viable kidneys discarded, and can the offering process be redesigned?
Show a short answer
Conference version of the paper now under revision at M&SOM: sequential offering induces herding, and batched voting mechanisms that aggregate centers’ private information strictly improve allocation correctness.
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Proceedings
Ban, A., & Koren, M. (2020). "Sequential Fundraising and Social Insurance". ACM EC '20.
In sequential fundraising, do early contributors act on what they know?
Show a short answer
Conference version of “Sequential Fundraising and Mutual Insurance”: early movers rationally shade or discard their own information to insure later contributors, a social-insurance logic absent from classical cascades.
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Proceedings
Jakesch, M., Koren, M., Evtushenko, A., & Naaman, M. (2020). "How Partisan Crowds Affect News Evaluation". TTO 2020.
Do partisan crowds judge news by its content or by who is around them?
Show a short answer
In experiments on crowd-based news evaluation, we separate the roles of the source, the headline and expressive responding (answering to signal identity rather than belief) in how people rate political news. Work from my internship at Cornell Tech.
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Proceedings
Arieli, I., Koren, M., & Smorodinsky, R. (2019). "The Implication of Pricing on Social Learning". ACM EC '19.
When a seller sets prices while consumers learn from each other’s choices, does the market eventually learn the product’s quality?
Show a short answer
Conference version of the Theoretical Economics article: with strategic prices, learning hinges on vanishing margins rather than on bounded signals.
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Proceedings
Arieli, I., Koren, M., & Smorodinsky, R. (2018). "The One-Shot Crowdfunding Game". ACM EC '18.
Why do crowdfunding campaigns attract contributors who doubt the project?
Show a short answer
Because a pledge binds only if the campaign succeeds, pessimists face little downside and over-participate, the social-insurance effect. The threshold mechanism therefore aggregates less information than voting intuition suggests.
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Proceedings
Arieli, I., Koren, M., & Smorodinsky, R. (2017). "The Crowdfunding Game". WINE 2017.
What is the equilibrium of a crowdfunding campaign in which contributions bind only if a threshold is met?
Show a short answer
We set up the crowdfunding game and characterize its equilibria, laying the groundwork for the one-shot and large-population analyses that followed.
Talks & Conferences
Invited seminars, keynotes and refereed-conference presentations by year.
- INFORMS Annual Meeting, San Francisco (invited speaker) — “Batch Offering Under Uncertainty”
- a16z Research Department (invited, virtual) — “LLM Based Workflow for Theory”
- University of York, Economics (invited) — “The Gatekeeper Effect”
- Bar-Ilan University, Economics (two seminars)
- Ben-Gurion University, Economics — “From Herding to Batching”
- ORSIS Annual Meeting, Technion
- Mid-Chain 2026, BGU
- INFORMS Annual Meeting, Atlanta (invited speaker)
- WINE, New Brunswick
- Stony Brook Game Theory Festival
- Israeli Game Theory Day, HUJI
- ORSIS Annual Meeting
- IEEE ISCC, Bologna
- CogSci, San Francisco
- TUM School of Social Sciences and Technology, Munich
- Tel Aviv University, Operations Management Seminar
- ICML, Vienna
- ORSIS Annual Meeting, BGU
- Israeli Industrial Engineering Day, BGU
- Bar-Ilan University, Game Theory Seminar
- ORSIS Annual Meeting
- Technion, Game Theory Seminar
- Hebrew University of Jerusalem, Economics
- Stony Brook International Conference on Game Theory
- SAGT, Colchester
- Harvard CMSA Big Data Conference (keynote)
- Marketplace Innovation Workshop
- Ariel University
- Ben-Gurion University, IE&M
- NeurIPS
- 6th World Congress of the Game Theory Society
- Ben-Gurion University, Economics
- ACM EC, Phoenix
- EC Workshop on Learning in the Presence of Strategic Behavior
- Israeli Chapter of the Game Theory Society, TAU
- Early Career Researcher Day, Haifa
- ACM EC, Ithaca
- Tel Aviv University, Coller School of Management
- WINE, Bangalore
- Lisbon Meetings in Game Theory and Applications
- 5th World Congress of the Game Theory Society, Maastricht
- Bar-Ilan University, Game Theory Seminar
- Bar-Ilan University, Economics
Teaching
Innovative Lecturer Award, Ben-Gurion University (2026) for the redesign of the course “Game Theory and Agentic Design”.
Current Courses (BGU)
Current Courses (BGU)
- Game Theory and Applications in Engineering (Graduate)
- Game Theory and Agentic Design (Undergraduate)
- Estimation and Hypothesis Testing
- Introduction to Decision Theory (undergraduate, mandatory)
Teaching interests, PhD mentoring and curriculum work
Teaching Interests & Coverage
Teaching Interests & Coverage
- Microeconomic Theory (UG/MA/PhD): static & dynamic games, information economics, contract theory
- Market & Mechanism Design (UG/MA elective): auctions, matching markets, pricing & screening, platform design
- Topics in Information & Learning (seminar): social learning, experimentation, gatekeeping/screening, allocation under uncertainty
PhD Teaching & Mentoring
- Seminars/mini-courses: Information & Mechanism Design; Learning vs. Incentives; Matching & Auctions
- Methods I can supervise: game-theoretic modeling, mechanism design, theory-driven experiments (online/field)
Curriculum Contributions
Faculty lead for accelerated MSc programs; founded and led the “Young Researchers (Hetz)” track (2024–2026).
Students & Lab
Supervising 5 MSc students (Yuval Doron, market design for displaced populations; Yarden Weiss, Sharona Isacov, Daniel Azoulay and Ron Halevi, who joined in 2026) and 1 Ph.D. candidate: Yuval Peled (from Oct 2026), researching strategic decision-making under competition in common value markets.
MSc graduates (2026): Bar Hoter (now Data Analyst at Vi), Ohad Kiperman (now Data Scientist at Zefr), Oriya Sheetrit, Din Amir, and Gal Ram.
Lab projects, alumni and B.Sc. capstonesLab updates on LinkedIn
Grants, Awards & Service
Research grants & fellowships
Competitive Research Grants
Competitive Research Grants
- MOST Call for Research Proposals in Artificial Intelligence 2026 (2027–2029): "Contractual Alignment for Delegated AI Agents" (topic: safety in the use of generative AI), PI at BGU with N. Rosenfeld (project coordinator), 500,000 NIS total (270,000 NIS share)
- ISF Personal Grant (2025–2026): "Pre-Filtering Mechanisms and Self-Selection", 380,000 NIS
- ISF Equipment Grant (2025–2026): Research Equipment Support, 67,500 NIS
- MOST Security, Food and Food Tech Program (2023–2026): Joint with D. Nitzan, N. Talmon, S. Shapira, 750,000 NIS total
External Non-Competitive Grants
- IDSI Projects for Social Good (2024): 20,000 NIS
University Internal Grants
- BGU Research Group Grant (2025): "Experimental Investigation of Crowdfunding Mechanisms", 12,000 NIS
- Paul Ivanier Research Grant (2025): "Adaptive Decentralized Two Regions Perimeter Control", (with A. Taitler), 7,500 USD
- BGU-CHER Grant (2025): "Market dynamics in organ procurement", (with I. Shurtz, N. Gershoni), 12,500 NIS
Awards & fellowships
- Innovative Lecturer Award, Ben-Gurion University (2026): for the redesign of the course "Game Theory and Agentic Design"
- ISF Shamir Fellowship for Returning Scientists (2021): 280,000 NIS
- Fulbright Post-doctoral Scholar (2019): $47,500
- CMSA Fellowship, Harvard (2020): $90,000
- Stanford Fellowship (2019): $30,000
- Harold & Inge Marcus Fellowship (2017)
- Technion Ph.D. Stipend (2015-2019)
Professional service & memberships
Editorial & Reviewing (selected)
Editorial & Reviewing (selected)
Ad-hoc reviewer: Review of Economics and Statistics; Review of Economic Studies; Journal of Economic Theory; Management Science; Theoretical Economics; Theory and Decision; International Journal of Game Theory; Artificial Intelligence; European Journal of Operational Research; Journal of Artificial Intelligence Research.
Program Committees (selected)
AAMAS (2027); The Web Conference (2026); ITCS (2026); ACM EC (2020, 2024-2025); IJCAI (2024); WINE (2021, 2024); SAGT (2023–2025); NeurIPS (2021).
Conference Organization
INFORMS Annual Meeting (2026), San Francisco — Cluster Co-Chair, Auctions and Market Design (AMD); Mid-Chain 2026 (Blockchain & Decentralized Economics), BGU — Co-Founder & Organizing Committee; Data Science, Operations and Analytics (Mind-IL 2026) — Organizing Committee; ORSIS Annual Meeting (2024) — Organizing Committee.
Memberships
MathEconLib — core contributor; machine-checked foundations for economics in Lean 4, developed with the support of Axiom Math; The Econometric Society; The Game Theory Society; American Economic Association; INFORMS; ACM; Mechanism Design for Social Good (MD4SG); Israeli Economics Society; ORSIS (Israeli OR Society).