About

Hello! My name is Sean, and I am a third-year PhD student in Operations Research at Massachusetts Institute of Technology. I am very fortunate to be advised by Prof. Alexandre Jacquillat. I am interested in large-scale integer optimization and sequential decision-making under uncertainty, with applications in transportation, healthcare, and logistics.

In my free time, I enjoy running, playing the horn, and climbing. I grew up in Singapore.

Email: seanlo [at] mit [dot] edu
Google Scholar | GitHub | LinkedIn

Research

(Author order is alphabetical.)

Online Rack Placement in Large-Scale Data Centers

Saumil Baxi, Kayla Cummings, Alexandre Jacquillat, Sean Lo, Rob McDonald, Konstantina Mellou,
Ishai Menache, Marco Molinaro
Jan 2025 (preprint)

Subpath-Based Column Generation for the Electric Routing-Scheduling Problem

Alexandre Jacquillat, Sean Lo
Jul 2024 (preprint) (code)
  • Finalist: INFORMS TSL Best Student Paper Award 2024

Optimal Low-Rank Matrix Completion: Semidefinite Relaxations and Eigenvector Disjunctions

Dimitris Bertsimas, Ryan Cory-Wright, Sean Lo, Jean Pauphilet
Jan 2024 (preprint) (code) (experiments)

Presentations

Online Assignment-Routing for Organ Delivery

  • Talk at INFORMS Computing Society Conference 2025
    Mar 2025, Toronto, Canada

Subpath-Based Column Generation for the Electric Routing-Scheduling Problem

  • Talk at Economics and Policy of Electric Vehicle Transportation Charging Infrastructure Workshop
    Oct 2024, Cambridge MA, USA
  • Talk at INFORMS Annual Meeting 2024
    Oct 2024, Seattle WA, USA
  • Talk at International Symposium for Mathematical Programming 2024
    Jul 2024, Montreal, Canada
  • Talk at INFORMS Optimization Society Conference 2024
    Mar 2024, Houston TX, USA
  • Talk at INFORMS Annual Meeting 2023
    Oct 2023, Phoenix AZ, USA

Optimal Low-Rank Matrix Completion: Semidefinite Relaxations and Eigenvector Disjunctions

  • Poster at Mixed-Integer Workshop 2023
    May 2023, Los Angeles CA, USA

Teaching

MIT 15.C57 Optimization Methods

Teaching Assistant, Fall 2024Teaching assistant for graduate class with over 250 students. Developed material, conducted recitations, graded assignments, projects and exam. (evaluations)

MIT 15.S60 Optimization with Julia and JuMP

Session Instructor, Jan 2024Session instructor for a practical optimization session for first-year doctoral students.

MIT 15.083 Integer Programming and Combinatorial Optimization

Teaching Assistant, Spring 2023Sole teaching assistant for doctoral class with over 30 students. Developed material, conducted recitations, graded assignments, projects and exam. (evaluations)

Education

Ph.D. in Operations Research

Massachusetts Institute of Technology, Operations Research Center, 2027 (expected)
Advisor: Alexandre Jacquillat

Master in Business Analytics

Massachusetts Institute of Technology, Sloan School of Management, 2022
  • Academic Achievement Award

Bachelors of Science in Mathematics

Imperial College London, 2020
  • Governors' BSc Prize in Mathematics

Service

Student Coordinator: MIT ORC Seminar Series, Fall 2024

Invited academics to speak at MIT ORC's seminar series, and made logistical arrangements.

Treasurer: MIT INFORMS Student Chapter, 2023

Managed operating funds and organized department events: highlights include an annual department retreat and formal dinner.