SN operations research forum最新文献

筛选
英文 中文
An Auxiliary Hybrid Heuristic Approach for Objective Function Design Evaluation-Using Train Unit Scheduling as an Example. 目标函数设计评价的辅助混合启发式方法——以列车单元调度为例。
SN operations research forum Pub Date : 2025-01-01 Epub Date: 2025-08-14 DOI: 10.1007/s43069-025-00529-7
Li Lei, Raymond Kwan, Zhiyuan Lin
{"title":"An Auxiliary Hybrid Heuristic Approach for Objective Function Design Evaluation-Using Train Unit Scheduling as an Example.","authors":"Li Lei, Raymond Kwan, Zhiyuan Lin","doi":"10.1007/s43069-025-00529-7","DOIUrl":"https://doi.org/10.1007/s43069-025-00529-7","url":null,"abstract":"<p><p>Real-world combinatorial optimization problems are mostly NP-hard, and often only near-optimal solutions can be obtained practically. To differentiate as fine-grained as possible the near-optimal solutions is therefore desirable. Moreover, a real-world problem may have numerous possible structural properties of concern to the practitioners, too numerous to be all elicited and incorporated as optimization criteria in an objective function. In contrast with pure heuristics, we consider hybrid (meta-)heuristics that utilize an exact solver iteratively to solve a series of significantly reduced problem instances converging to near-optimal solutions within practical time. To avoid the hybrid heuristic being stranded in a \"poorly differentiated\" solution space, an effective objective function design plays an important role. We propose a methodology to benchmark the effectiveness of alternative objective function designs. The main metric used is the structural similarity between the solutions obtained by the hybrid heuristic and by the exact solver. Several other solution features are also distilled and aggregated in the benchmark. This methodology is explained and demonstrated on a train unit scheduling problem tested with four alternative objective functions. The results show that two of them are significantly more effective than the others in differentiating solutions of different qualities and speeding up the solution process. Moreover, some criteria not modeled explicitly could also be satisfied implicitly in the effective objective designs.</p>","PeriodicalId":521026,"journal":{"name":"SN operations research forum","volume":"6 3","pages":"121"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12369404/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144986812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信