PMID- 33531309 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220720 IS - 2168-2275 (Electronic) IS - 2168-2267 (Linking) VI - 52 IP - 8 DP - 2022 Aug TI - A Route Clustering and Search Heuristic for Large-Scale Multidepot-Capacitated Arc Routing Problem. PG - 8286-8299 LID - 10.1109/TCYB.2020.3043265 [doi] AB - The capacitated arc routing problem (CARP) has attracted much attention for its many practical applications. The large-scale multidepot CARP (LSMDCARP) is an important CARP variant, which is very challenging due to its vast search space. To solve LSMDCARP, we propose an iterative improvement heuristic, called route clustering and search heuristic (RoCaSH). In each iteration, it first (re)decomposes the original LSMDCARP into a set of smaller single-depot CARP subproblems using route cutting off and clustering techniques. Then, it solves each subproblem using the effective Ulusoy's split operator and local search. On one hand, the route clustering helps the search for each subproblem by focusing more on the promising areas. On the other hand, the subproblem solving provides better routes for the subsequent route cutting off and clustering, leading to better problem decomposition. The proposed RoCaSH was compared with the state-of-the-art MDCARP algorithms on a range of MDCARP instances, including different problem sizes. The experimental results showed that RoCaSH significantly outperformed the state-of-the-art algorithms, especially for the large-scale instances. It managed to achieve much better solutions within a much shorter computational time. FAU - Zhang, Yuzhou AU - Zhang Y FAU - Mei, Yi AU - Mei Y FAU - Huang, Shihua AU - Huang S FAU - Zheng, Xin AU - Zheng X FAU - Zhang, Cuijuan AU - Zhang C LA - eng PT - Journal Article DEP - 20220719 PL - United States TA - IEEE Trans Cybern JT - IEEE transactions on cybernetics JID - 101609393 SB - IM EDAT- 2021/02/04 06:00 MHDA- 2021/02/04 06:01 CRDT- 2021/02/03 05:47 PHST- 2021/02/04 06:00 [pubmed] PHST- 2021/02/04 06:01 [medline] PHST- 2021/02/03 05:47 [entrez] AID - 10.1109/TCYB.2020.3043265 [doi] PST - ppublish SO - IEEE Trans Cybern. 2022 Aug;52(8):8286-8299. doi: 10.1109/TCYB.2020.3043265. Epub 2022 Jul 19.