Vallada, Eva; Ruiz, Rubén; Framinan, Jose M. - In: European Journal of Operational Research 240 (2015) 3, pp. 666-677
In this work a new benchmark of hard instances for the permutation flowshop scheduling problem with the objective of minimising the makespan is proposed. The new benchmark consists of 240 large instances and 240 small instances with up to 800 jobs and 60 machines. One of the objectives of the...