Modified cuckoo optimization algorithm (MCOA) to solve graph coloring problem

- Novel discrete approach for combinational optimization based on cuckoo optimization algorithm (COA).
- Redefining the difference concept between two habitats as a differential list of movements.
- Proposed method enable to solve non-permutation problems.
- Modifying egg laying and immigration phase of COA in the proposed discrete cuckoo optimization algorithm (DCOA).
- High quality results obtained for graph coloring problems.