Xiao, Yiyong; Zhang, Renqian; Zhao, Qiuhong; Kaku, Ikou; Xu, Yuchun
(Elsevier Science B.V., Amsterdam., 2014-05-16)
In this study, we improved the variable neighborhood search (VNS) algorithm for solving uncapacitated multilevel lot-sizing (MLLS) problems. The improvement is two-fold. First, we developed an effective local search method ...