Prof. Ella Segev

Ella Segev is a faculty member at the Operations Research Department at the Hebrew University Business School and a member of the Federmann Center for the study of Rationality. Her research is interdisciplinary and lies in the intersection of Operations Research, Computer Science and Economics. She is primarily an analytical modeler. She uses game theoretic models to describe interactive situations and examine players’ incentives and behavior. She has collaborated with many researchers from different departments and different universities but throughout her research she applies game theory to describe situations or interactions and derive understanding of the behavior of the different players in the game. Prof. Segev teaches courses in Operations Management, Decision Theory and Game Theory.

Publications

1. Heifetz A. and E. Segev (2004), “The Evolutionary Role of Toughness in Bargaining”, Games and Economic Behavior 49 (1), pp. 117-134.

2. Heifetz A. and E. Segev (2005), “Escalation and Delay in Protracted International  Conflicts”, Mathematical Social Sciences 49 (1), pp. 17-37.

3. Heifetz A., Segev E. and E. Talley (2007),  “Market Design with Endogenous Preferences”, Games and Economic Behavior 58 (1), pp. 121-153.

4. Halpern J., D. Samet and E. Segev (2009), "On Definability in Multimodal Logic”, The Review of Symbolic Logic, 2 (3), pp. 451-468.

5. Halpern J., D. Samet and E. Segev (2009), "Defining Knowledge in Terms of Belief: The Modal Logic Perspective”, The Review of Symbolic Logic, 2 (3), pp. 469-487.

6. Hochman G. and E. Segev (2010), "Managed Trade with Imperfect Information", International Economic Review, 51 (1), pp. 187-211.

7. Schweinzer P. and E. Segev (2012), "The optimal prize structure of symmetric Tullock contests", Public Choice, 153 (1), pp. 69-82.

8. Gayer G. and E. Segev (2012), "Revealing Private Information in Bargaining", The BE journal of Theoretical Economics, 12 (1) (Topics), pp. 1-34.

9. Segev E. and A. Sela (2014), "Sequential All-Pay Auctions with Noisy Outputs", The Journal of Mathematical Economics, 50 (1), pp. 251–261.

10. Gavious A., Greenberg D., Hammerman A. and Segev E (2014), "Impact of a Financial Risk-Sharing Scheme on Budget-Impact Estimations: A Game-Theoretic Approach", The European Journal of Health Economics, 15, pp. 553-561.

11. Segev E. and A. Sela (2014), "Multi-Stage Sequential All-Pay Auction", European Economic Review, 70, pp. 371-382.

12. Lavi R. and Segev E (2014), "Efficiency Levels in Sequential Auctions with Dynamic Arrivals", International Journal of Game Theory, 43 (4), pp. 791-819.

13. Segev E. and A. Sela (2014), "Sequential All-Pay Auctions with Head Starts", Social Choice and Welfare, 43 (4), pp. 893-923.

14. Gavious A. and E. Segev (2015), "Price Discrimination based on Buyers' Purchase History", Dynamic Games and Applications, 7 (2), pp. 229-265.

15. Chen Z., D. Ong, and E. Segev (2017), "Heterogeneous Risk/Loss Aversion in Complete Information All-pay Auctions", European Economic Review, 75, pp. 23-37.

16.  Cohensius G. and E. Segev (2018), "Sequential Bidding in Asymmetric First Price Auctions", The BE journal of Theoretical Economics, 18 (1), pp. 1-21.

17.  Feldman P., Papanastasiou Y., and E. Segev (2019), "Social Learning and the Design of New Experience Goods", Management Science, 65(4), pp. 1502–1519.

18.  Segev E. (2020), “Crowdsourcing Contests”, European Journal of Operational Research, 281(2), pp. 241-255.

19.  Feldman P., and E. Segev (2022), “The Important Role of Time Limits when Consumers Choose their Time in Service”, Forthcoming in Management Science

20. Iliaev D., Oren S., and E. Segev (2022), “A Tullock-Contest-Based Approach for Cyber Security Investments”, Forthcoming in Annals of Operations Research

Book Chapter

Heifetz A., Segev E. and E. Talley (2014), “Legislation with Endogenous Preferences”, Handbook of Market Design, Edited by Neeman, Niederle, Vulkan, and Roth, Oxford University Press.

Publications in Refereed Conferences

Efficiency of Sequential English Auctions with Dynamic Arrivals, 2012

by (names by alphabetic order) Coral Haggiag, Sigal Oren and Ella Segev

Proceedings of the 31st International Joint Conference on Artificial Intelligence (IJCAI 22)

By Gal Hochman, Ella Segev, Geoffrey Barrow, and David Zilberman

USAEE Dialogue, October 2013, Vol. 21, No. 3, available on-line at: dialogue.usaee.org.

Picking the Right Winner: Why Tie-Breaking in Crowdsourcing Contests Matters

By (names by alphabetic order) Olivier Compte, Ron Lavi and Ella Segev

Proceedings of the 13th ACM Conference on Electronic Commerce (EC'12).

The impact of the US energy policy on the balance of trade, 2013

Awards

Recent Awards and Grants

2023 - 2028     The Israel Science Foundation (ISF) grant no. 301/23. Title: “User behavior on crowdsourcing platforms with multiple activities”, Total amount – 1,350,000 NIS, PI’s: Ella Segev and Lior Fink.

2019 - 2023     The Israel Science Foundation (ISF) grant no. 2167/19. Title: “Mechanisms for the Platform Economy”, Total amount – 880,000 NIS, PI’s: Ella Segev and Sigal Oren.

2021–2023     The Bi-National Science Foundation (BSF) grant no. 2020170. Title: “Managing Scarcity through limits”, Total amount 70,000$, PI’s: Ella Segev and Pnina Feldman.

The paper “The Important Role of Time Limits when Consumers Choose their Time in Service” won the Uriel G. Rothblum prize for excellent work in Operations Research from the Israeli OR society (ORSIS) for 2022 as well as 3rd place for the 2021 INFORMS Service Science Best Cluster paper award