Working Papers

1. Stability of Fork-Join Systems with Redundancy and Heterogeneous Servers.

   With Seyed Iravani and Ohad Perry. Rejected and resubmitted to Operations Research. arXiv:2609.09237 (2026). [arXiv]

2. Multi-Turn LLM Conversations under the Least-Recently-Used Policy: Mean-Field Asymptotics and Hit Ratio Approximation.

   With Heyuan Yao, Yuan Lyu, Izzy Grosof, and David Simchi-Levi. arXiv preprint arXiv:2609.02027 (2026). [Preprint]

3. OR-Transformer: Scaling Real-Time Decision-Making to 1,000 Items.

   With Shuze Daniel Liu, David Simchi-Levi, Claire Chen, and Shangtong Zhang. arXiv preprint arXiv:2609.01933 (2026). [Preprint]

4. The Value and Curse of Redundancy in Designing Fork-Join Systems.

   With Seyed Iravani and Ohad Perry. In preparation for submission to Management Science.

5. Asymptotic Equivalence of a Little Redundancy and a Little Flexibility.

   With Seyed Iravani and Ohad Perry. Work in progress.

6. Continuous Scheduling in LLM Inference with Time-Varying Resource Requirements.

   With Izzy Grosof and Heyuan Yao. Work in progress.

Publications

1. Robust Optimization on Unrelated Parallel Machine Scheduling with Setup Times.

   Weihao Wang, Chutong Gao, Leyuan Shi. IEEE Transactions on Automation Science and Engineering 20.1 (2022): 346-360. [Link]

2. Workload Balancing for Production Planning With Lot Streaming and Multilevel BOM.

   Weihao Wang, Chutong Gao, Leyuan Shi. IEEE Transactions on Automation Science and Engineering 18.1 (2020): 255-268. [Link]

Dissertation

1. Design and Control Principles in Fork-Join Systems With Redundancy and Flexibility.

   Chutong Gao. Doctoral dissertation, Northwestern University (2026). [Link]