Equitable coloring Arbitrary color Benchmarking Ciencias Informáticas Computational experiment DSatur Equitable graph coloring Exact algorithm Exact algorithms Integer programming Algorithms Branch & cut Coloring Coloring problems Combinatorial optimization Cut and branch Graph coloring Graph coloring problem Heuristic algorithms Heuristic methods Heuristics Integer programming model Large-sized Local search Planning workday of bus drivers Tabu Search heuristic Tabu search códigos de identificación modelo de programación entera