FSO Wavelength minimization Optimisation combinatoire WDM network Network design Integer Linear Programming ILP Path generation Cutting plane Constrained shortest path Bilevel optimization Spanning problems All-optical WDM networks Checkpointing Column generation Approximability Scheduling ILP Constraint programming Degree-Constrained Spanning Problem Linear and mixed-integer programming Homomorphism Column Generation Optimisation FPTAS Investments optimization Spanning tree Graph theory Compatibility graph Complexité NP-hardness Integer programming Multicast routing Branch vertices constraint Complexity Multicommodity flows Robust Optimization Clearing algorithms Complexity & approximation Computational complexity Degree constrained minimum spanning hierarchy Integer Programming FPT algorithm Combinatorial optimization Affine routing Hierarchy Sparse splitting Kidney exchange Benders decomposition Capacity Expansion Light-tree Genome scaffolding Robust combinatorial optimization Bass model Exact methods Budgeted uncertainty Wireless sensor networks Model Driven Engineering Light-hierarchy K-adaptability Routing Dynamic Programming Bi-level programming Approximation algorithms Branch and Price Coupled-task scheduling model Quality of Service Heuristic Light-trail Exascale RPL Light-forest Spanning Hierarchy Linear programming IoT Branch-cut-and-price Variable link capacity Fault-tolerance Branch-and-Cut Dynamic programming Approximation algorithm Scaffolding Parallel job Homomorphisme Optimization Combinatorial Optimization Vehicle routing Free space optics Robust optimization IoT networks Energy-aware engineering K-MBVST Replication Quality of service Approximation ratio Coupled-tasks Time windows K-Adaptability Approximation Chordal graphs Réseaux de capteurs