Benchmark instances
- Two-level capacitated facility location with concave costs (introduced in Malik, Contreras and Vidyarthi, 2022, TS)
- Multi-level uncapacitated facility location (introduced in Ortiz-Astorquiza, Contreras and Laporte, 2017, JOC)
- Uncapacitated hub location problem with single assignments (introduced in Contreras, Cordeau and Laporte, 2011, OR)