Clique |
Independent Set |
Vertex Cover |
Traveling Salesman Problem |
Hamiltonian Cycle |
Graph Partition |
Vertex Coloring |
Edge Coloring |
Graph Isomorphism |
Steiner Tree |
Feedback Edge/Vertex Set |
Approximation Algorithms for NP-hard Problems by Dorit Hochbaum | Computers and Intractability: A Guide to the Theory of NP-Completeness by M. R. Garey and D. S. Johnson | Handbook of Approximation Algorithms and Metaheuristics by T. Gonzalez |
Complexity and Approximation: Combinatorial Optimization Problems and Their Approximability Properties by G. Ausiello and P. Crescenzi and G. Gambosi and V. Kann and S. Marchetti-Spaccamela and M. Protasi | Approximation Algorithms by V. Vazirani |