Tamar Cohen-Hillel

Ph.D. Candidate, at Massachusetts Institute of Technology in Operations Research.


I am a Ph.D. candidate in Operations Research at the Massachusetts Institute of Technology, supervised by Professor Georgia Perakis. My current research in revenue management involves developing new methods for demand estimation and optimizes pricing decisions in order to maximize revenue.

Prior to joining MIT, I received an M.Sc. degree with summa cum laude in Information Management Engineering, and a B.Sc. degree in Industrial Engineering both from the Technion - Israel Institute of Technology.

My Master's thesis title is “Complexity Results for Periodic Decision Problems” and was supervised by Professor Liron Yedidsion.

During my Bachelor studies I worked at Intel Corporation as a system administrator and customer side developer.

My CV can be found here.

Research Interests

My research interests lie broadly in mathematical modeling and discrete optimization in the field of revenue management and logistics. In particular, I am currently working on solving problems in the realm of pricing, promotion scheduling and promotion targeting.

I am also interested in personalized demand estimation based on behavioral aspects such as social interaction and price anchoring.

Publications

Published

Under Review

In Progress

  • Cohen-Hillel, T., Panchamgam, K. and Perakis, G., High-Low Promotion Policies for Peak End Demand Models, soon to be submitted.
  • Cohen-Hillel, T., Panchamgam, K. and Perakis, G., Bounded Memory Peak End Models Can be Surprisingly Good, work in progress.
  • Baardman, L., Cohen-Hillel, T. and Perakis, G., Trade Funds from the Manufacturer's Perspective: Joint Demand Forecasting and Dynamic Pricing, work in progress.
  • Cohen-Hillel, T. Lukin, G., Revah, Y. and Yedidsion, L., Minimize the Flow Time of Multi Stages Jobs on Multi-Purpose Machines, work in progress.

Honors and Awards

  • 2018: INFORMS Service Science Best Cluster Paper Competition.
  • 2016: Rothblum Award - ORSIS Prize for Excellence in Research in OR.

Talks and Presentations

Conferences

  • Cohen, T., Panchamgam, K., and Perakis, G., (2018, June). Peak-End Demand Models and their Impact on Promotion Optimization Problems. Oral presentation at 2018 Manufacturing & Services Operation Management Conference in Dallas, Texas.
  • Baardman, L., Borjian Boroujeni, S., Cohen, T., Panchamgam, K., Perakis, G., (2018, June). Customer-trends for Personalized Demand Estimation and Targeted Promotions. Oral presentation at 2018 Manufacturing & Services Operation Management Conference in Dallas, Texas.
  • Cohen, T., Panchamgam, K., and Perakis, G., (2018, June). Peak-End Demand Models and their Impact on Promotion Optimization Problems. Oral presentation at 2018 Revenue Management & Pricing Conference in Toronto, Canada.
  • Baardman, L., Borjian Boroujeni, S., Cohen, T., Panchamgam, K., Perakis, G., (2017, October). Customer-trends for Personalized Demand Estimation and Targeted Promotions. Oral presentation at 2017 INFORMS Annual Conference in Houston, Texas.
  • Cohen, T., Panchamgam, K., and Perakis, G., (2017, October). Peak-end Demand Models And Their Impact On Promotion Planning. Oral presentation at 2017 INFORMS Annual Conference in Houston, Texas.
  • Baardman, L., Borjian Boroujeni, S., Cohen, T., Panchamgam, K., Perakis, G., (2017, June). Customer-Trends for Personalized Demand Estimation and Targeted Promotions. Oral presentation at MSOM 2017 in Chapel Hill, North Carolina.
  • Cohen, T., and Yedidsion, L., (2016, November). NP-Hardness Proof for Joint Replenishment Problem. Oral presentation at the INFORMS Annual Meeting 2016 in Nashville, Tennessee.
  • Cohen, T., and Yedidsion, L., (2015, February). Minimize the Flow Time of Multi Stages Jobs on Multi-Purpose Machines. Oral presentation at the 19th Industrial Engineering and Management Conference in Tel Aviv, Israel
  • Cohen, T., and Yedidsion, L., (2014, March). Assigning Employees to Vacations with Additional Constraints. Oral presentation at the 18th Industrial Engineering and Management Conference in Tel Aviv, Israel

Invited Talks

  • Baardman, L., Borjian Boroujeni, S., Cohen, T., Panchamgam, K., Perakis, G., (2019, January). Customer-trends for Personalized Demand Estimation and Targeted Promotions. Technion - Israel Institute of Technology, Israel.
  • Cohen, T., Panchamgam, K., and Perakis, G., (2018, October) High-Low Promotion Policies for Peak End Demand Models, Young Researchers Workshop Cornell ORIE 2018.
  • Cohen, T., Panchamgam, K., and Perakis, G., (2018, April) Peak-End Demand Models and their Impact on Promotion Planning Problems, MIT Sloan School of Management.
  • Cohen, T., and Yedidsion, L., (2016, January). NP-Hardness Proof for Joint Replenishment Problem. Computer Science Department, Technion - Israel Institute of Technology, Israel.

Posters

  • T. Cohen, L. Yedidsion, (2014, November). NP-Hardness Proof for the Maintenance Scheduling for Modular Systems problem. Poster presentation at the INFORMS Annual Meeting 2014 in San Francisco, California.

Teaching Experience

MIT

  • 15.730 Data, Models, and Decisions - Spring 2017,2018,2019
    Executive MBA course taught by Professor Georgia Perakis.
    Responsibilities included: class organization, teaching bi-weekly recitation and reviewing several case studies.

Technion, Israel Institute of Technology

  • 97211 Fault Tolerant Networks Protocols - Spring 2012, 2013
    Joint Graduate/Undergraduate course taught by Professor Shay Kutten.
    Responsibilities included: teaching weekly recitation, writing and grading homework and supervising student projects.
  • 96260 Advanced Topic in Information Systems - Winter 2013
    Joint Graduate/Undergraduate course taught by Professor Shay Kutten.
    Responsibilities included: grading students' presentations and supervising student projects.
  • 94210 Introduction to Computer Technologies - Spring 2014, 2015
    Undergraduate course taught by Professor Ofer Strichman.
    Responsibilities included: teaching weekly recitation, writing and grading of both homework and final exam.
  • 94223 Data Structures and Algorithms - Winter 2014, 2015
    Undergraduate course taught by Professor Avigdor Gal.
    Responsibilities included: teaching weekly recitation, writing and grading of both homework and final exam.
  • 96326 Introduction to Scheduling - Winter 2014
    Joint Graduate/Undergraduate course taught by Professor Liron Yedidsion.
    Responsibilities included: teaching weekly recitation, writing and grading homework and supervising student projects.
  • 94142 Operation of Production Service Systems - Spring 2015
    Undergraduate course taught by Professor Liron Yedidsion.
    Responsibilities included: teaching weekly recitation, writing and grading of both homework and final exam.

ASAT- Technion Student Association

  • Pre-test Preparation Class - Winter, Spring 2008, 2009, 2010 (Instructor)
    Undergraduate course.
    Responsibilities included: teaching daily lectures, preparing slides and designing a contest based on previous years' exams.
  • Pre-school Preparation Class - Summer 2010 (Instructor)
    Undergraduate course.
    Responsibilities included: teaching daily lectures.

Work Experience

Teva Pharmaceuticals (July 2013 - November 2013)

Programmer for consultation project for Teva Pharmaceuticals.
Developing and implementing an assignment algorithm with constraints.

Intel Corporation (February 2010 - January 2013)

System admin, customer side developer.
Developing and supporting customer side scheduling system. Managing customers’ work environment. Online support for customers around the world.

Contact

Address
Tamar Cohen-Hillel
Operations Research Center
77 Massachusetts Avenue, E40-103
Cambridge, MA 02139

Email
tcohen at mit dot edu