Research

I specialize in developing exact and heuristic algorithms for large-scale optimization problems in transportation and logistics networks.

Interests

Network Design and Scheduling, Supply Chain Optimization, Data-driven Optimization, Integer Programming, Learning-based Decomposition Techniques for Large Scale Service Networks

Publications

Ojha, R., Erera, A., Boland, N., Savelsbergh, M. Inventory-aware Long-term Equipment Planning for Service Networks IISE Annual Conference and Expo, 2021.
1st Place Award in IISE Logistics and Supply Chain (LSC) Division Best Student Paper Competition.
Ojha, R., Ghadge, A., Tiwari, M. K., Bititci, U. Bayesian network modelling for supply chain risk propagation International Journal of Production Research (IJPR), 2018.
Ghadge, A., Dani, S., Ojha, R., Caldwell, N. Using risk sharing contracts for supply chain risk mitigation: A buyer-supplier power and dependence perspective Computers & Industrial Engineering (CAIE), 2017.

Submitted Papers

Ojha, R., Erera, A. (Nov 2023) Cross-Dock Trailer Scheduling with Worker Constraints: A Dynamic Discretization Discovery Approach
Ojha, R., Chen, W., Zhang, H., Khir, R., Erera, A., Van Hentenryck, P. (April 2024) Optimization-based Learning for Outbound Load Planning in Parcel Delivery Service Networks
Accepted for presentation in the 2nd Triennial TSL Conference, July 2023.

Accepted for presentation in TSL Workshop, December 2021.

Working Papers

Ojha, R., Erera, A. Integrated Inbound-Outbound Load Planning in Trucking Service Networks
Ojha, R., Erera, A. Robust Outbound Load Planning with Volume Splitting
Ojha, R., Marshall, L. Exact Algorithms for Large-scale Airline Schedule Design
Accepted for presentation in 9th Triennial ODYSSEUS Conference, May 2024.
Ojha, R. An Iterative Exact Algorithm for Unrelated Parallel Machine Scheduling Problems with Release Times

Patents