4 papers
Adaptive Partitioning in Column Generation for Nested Paths
Bart van Rossum, Rolf van Lieshout, Alexandre Jacquillat
We study a class of nested path problems, in which every path-based variable can be decomposed into a sequence of subpaths. Subpaths must satisfy local resources, while paths must…
Subpath-Based Column Generation for Electric Vehicle Routing Problems
Alexandre Jacquillat, Sean Lo
Motivated by widespread electrification targets, this paper studies an Electric Vehicle Routing Problem with Time Windows and Nonlinear Charging (EVRPTWNL) that jointly optimizes r…
Online Rack Placement in Large-Scale Data Centers: Online Sampling Optimization and Deployment
Saumil Baxi, Kayla Cummings, Alexandre Jacquillat +5
This paper optimizes the configuration of large-scale data centers toward cost-effective, reliable and sustainable cloud supply chains. The problem involves placing incoming racks…
A Double Decomposition Algorithm for Network Planning and Operations in Deviated Fixed-route Microtransit
Bernardo Martin-Iradi, Alexandria Schmid, Kayla Cummings +1
Microtransit offers opportunities to enhance urban mobility by combining the reliability of public transit and the flexibility of ride-sharing. This paper optimizes the design and…