Keyphrases
- particle swarm optimization
- lagrangian relaxation
- hybrid approaches
- integer programming
- feasible solution
- lower bound
- branch and bound algorithm
- column generation
- np hard
- dynamic programming
- dual decomposition
- lower and upper bounds
- linear programming
- mixed integer programming
- capacity constraints
- network design problem
- branch and bound
- relaxation algorithm
- shortest path
- lagrangian heuristic
- objective function
- valid inequalities
- linear programming relaxation
- mixed integer
- upper bound
- training set
- optimal solution
- neural network