Large-Scale Storage/Retrieval Requests Sorting Algorithm for Multi-I/O Depots Automated Storage/Retrieval Systems

Figure 7

Equivalent merging process of subloops of the example shown in Table 3 (a) Three subloops determined by assignment. (b) Equivalent merging scheme. (c) New subloops after equivalent merging. (d) Minimum cost merging scheme. (e) Tour after minimum cost merging.