作者:Zweig, G
摘要:This paper presents an effective neighborhood structure for the traveling salesman problem. The neighbors of a tour are defined as the tours that can be produced by breaking the initial tour into two closed subtours, rejoining the subtours in a new configuration, and finally performing local optimization around all the changed edges. This process of generating a neighbor is termed divide and merge. Neighbor lists are used to develop variants of divide and merge that require linear and constant...
作者:Bilge, U; Ulusoy, G
摘要:This paper exploits the interactions between the machine scheduling and the scheduling of the material handling system in an FMS by addressing them simultaneously. The material transfer between machines is done by a number of identical automated guided vehicles (AGVs) which are not allowed to return to the load/unload station after each delivery. This operating policy introduces an additional complexity to the problem because it results in sequence-dependent travel times for the deadheading tr...