Operations Research Perspectives最新文献_第9页

An unsupervised learning-based generalization of Data Envelopment Analysis 基于无监督学习的数据包络分析泛化

IF 2.5 4区管理学

Operations Research Perspectives Pub Date : 2023-12-01 Epub Date: 2023-06-19 DOI: 10.1016/j.orp.2023.100284

Raul Moragues , Juan Aparicio , Miriam Esteve

引用次数: 0

Variable Neighborhood Search Algorithm for the Single Assignment Incomplete Hub Location Problem with Modular Capacities and Direct Connections 具有模块化容量和直接连接的单分配不完全集线器定位问题的变邻域搜索算法

IF 2.5 4区管理学

Operations Research Perspectives Pub Date : 2023-12-01 Epub Date: 2023-07-20 DOI: 10.1016/j.orp.2023.100286

Raed AL Athamneh , Moayad Tanash , Dania Bani Hani , Mustafa Rawshdeh , Abdallah Alawin , Zaid Albataineh

{"title":"Variable Neighborhood Search Algorithm for the Single Assignment Incomplete Hub Location Problem with Modular Capacities and Direct Connections","authors":"Raed AL Athamneh , Moayad Tanash , Dania Bani Hani , Mustafa Rawshdeh , Abdallah Alawin , Zaid Albataineh","doi":"10.1016/j.orp.2023.100286","DOIUrl":"10.1016/j.orp.2023.100286","url":null,"abstract":"<div><p>In distribution systems such as airlines and express package delivery, the use of hub-and-spoke networks is common, and flow consolidation at hub facilities is essential for cost reduction. While a constant discount factor is typically used to model cost reduction in interhub links, this paper explores an extension of the incomplete hub location problem with modular capacity that enables direct connections between non-hub nodes. The modified approach, called MHLPDC, aims to locate a set of hub facilities, connect each non-hub node to a hub, and activate hub facility links, access arc links, and direct links between non-hub nodes to minimize network costs. The MHLPDC integrates link activation decisions into the decision-making process and utilizes modular arc costs to model the flow dependence of transportation costs in all arcs. To solve the problem, the paper presents a mixed-integer mathematical programming formulation and heuristic algorithm based on a greedy randomized adaptive search and variable neighborhood search approach. The proposed algorithm produces high-quality solutions, as demonstrated through computational experiments on benchmark instances with up to 40 nodes. Furthermore, a sensitivity analysis of the optimal network structure indicates that increasing the discount factor, by varying hub and access arc capacities as well as the associated variable costs, results in fewer hubs being established and more direct shipments between non-hub nodes being permitted.</p></div>","PeriodicalId":38055,"journal":{"name":"Operations Research Perspectives","volume":"11 ","pages":"Article 100286"},"PeriodicalIF":2.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44222853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Early detection of students’ failure using Machine Learning techniques 使用机器学习技术早期发现学生的失败

IF 2.5 4区管理学

Operations Research Perspectives Pub Date : 2023-12-01 Epub Date: 2023-11-20 DOI: 10.1016/j.orp.2023.100292

Aarón López-García , Olga Blasco-Blasco , Marina Liern-García , Sandra E. Parada-Rico

{"title":"Early detection of students’ failure using Machine Learning techniques","authors":"Aarón López-García , Olga Blasco-Blasco , Marina Liern-García , Sandra E. Parada-Rico","doi":"10.1016/j.orp.2023.100292","DOIUrl":"https://doi.org/10.1016/j.orp.2023.100292","url":null,"abstract":"<div><p>The educational system determines one of the significant strengths of an advanced society. A country with a lack of culture is less competitive due to the inequality suffered by its people. Institutions and organizations are putting their efforts into tackling that problem. Nevertheless, it is not an easy task to ascertain why their students have failed or what are the conditions that affect such situations. In this work, an intelligent system is proposed to predict academic failure by using student information stored by the Industrial University of Santander (Colombia). The prediction model is powered by the XGBoost algorithm, where a TOPSIS-based feature extraction and ADASYN oversampling have been conducted. Hyperparameters of the classifier were tuned by a cross-validated grid-search algorithm. We have compared our results with other decision-tree classifiers and displayed the feature importance of our intelligent system as an explainability phase. In conclusion, our intelligent system has shown a superior performance of our prediction model and has indicated to us that economic, health and social factors are decisive for the academic performance of the students.</p></div>","PeriodicalId":38055,"journal":{"name":"Operations Research Perspectives","volume":"11 ","pages":"Article 100292"},"PeriodicalIF":2.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2214716023000271/pdfft?md5=d89e17319a9f617588eb399039619fc0&pid=1-s2.0-S2214716023000271-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138437032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A real-time balancing market optimization with personalized prices: From bilevel to convex 具有个性化价格的实时平衡市场优化:从双层到凸面

IF 2.5 4区管理学

Operations Research Perspectives Pub Date : 2023-01-01 Epub Date: 2023-04-21 DOI: 10.1016/j.orp.2023.100276

Koorosh Shomalzadeh , Jacquelien M.A. Scherpen , M. Kanat Camlibel

{"title":"A real-time balancing market optimization with personalized prices: From bilevel to convex","authors":"Koorosh Shomalzadeh , Jacquelien M.A. Scherpen , M. Kanat Camlibel","doi":"10.1016/j.orp.2023.100276","DOIUrl":"10.1016/j.orp.2023.100276","url":null,"abstract":"<div><p>This paper studies the static economic optimization problem of a system with a single aggregator and multiple prosumers in a Real-Time Balancing Market (RTBM). The aggregator, as the agent responsible for portfolio balancing, needs to minimize the cost for imbalance satisfaction in real-time by proposing a set of optimal personalized prices to the prosumers. On the other hand, the prosumers, as price taker and self-interested agents, want to maximize their profit by changing their supplies or demands and providing flexibility based on the proposed personalized prices. We model this problem as a bilevel optimization problem. We first show that the optimal solution of this bilevel optimization problem can be found by solving an equivalent convex problem. In contrast to the state-of-the-art Mixed-Integer Programming (MIP)-based approach to solve bilevel problems, this convex equivalent has very low computation time and is appropriate for real-time applications. Next, we compare the optimal solutions of the proposed personalized scheme and a uniform pricing scheme. We prove that, under the personalized pricing scheme, more prosumers contribute to the RTBM and the aggregator’s cost is less. Finally, we verify the analytical results of this work by means of numerical case studies and simulations.</p></div>","PeriodicalId":38055,"journal":{"name":"Operations Research Perspectives","volume":"10 ","pages":"Article 100276"},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45380927","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Production planning decisions in the broiler chicken supply chain with growth uncertainty 具有增长不确定性的肉鸡供应链生产计划决策

IF 2.5 4区管理学

Operations Research Perspectives Pub Date : 2023-01-01 Epub Date: 2023-03-02 DOI: 10.1016/j.orp.2023.100273

Alfaima L. Solano-Blanco , Jaime E. González , Andrés L. Medaglia

{"title":"Production planning decisions in the broiler chicken supply chain with growth uncertainty","authors":"Alfaima L. Solano-Blanco , Jaime E. González , Andrés L. Medaglia","doi":"10.1016/j.orp.2023.100273","DOIUrl":"10.1016/j.orp.2023.100273","url":null,"abstract":"<div><p>Broiler chickens are specially raised for meat production and their supply chain is composed of breeders, hatcheries, feed mills, farms, slaughterhouses, wholesalers, and retailers. The coordination between supply chain players has great potential to streamline production and increase competitiveness in the market. A critical element in the decision-making process of this agri-system is the weight gain of broiler chickens. Variability in chicken growth patterns can affect production plans in practice. The most efficient weight estimation models require sensors in real-time, which are not available in many companies. Thus, some small farms require a simpler approach to adjust production planning based on the uncertainty of chickens’ weight while they transition to new technologies. This research proposes an optimization-based methodology for the integration of farms and slaughterhouses to plan production under chicken growth uncertainty. The methodology includes two models: (i) a two-stage stochastic model that supports lot-sizing and inventory management decisions while considering scenarios of chicken growth uncertainty; and (ii) a mixed-integer linear programming model that supports lot allocation. We present the results of implementing the methodology in a poultry company in Santa Marta (Colombia), where we improved costs by 8.6% while meeting tactical, biological, and biosecurity constraints.</p></div>","PeriodicalId":38055,"journal":{"name":"Operations Research Perspectives","volume":"10 ","pages":"Article 100273"},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42768785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Methods to analyze customer usage data in a product decision process:A systematic literature review 在产品决策过程中分析顾客使用数据的方法:系统的文献综述

IF 2.5 4区管理学

Operations Research Perspectives Pub Date : 2023-01-01 Epub Date: 2023-05-05 DOI: 10.1016/j.orp.2023.100277

Christian Micus , Simon Schramm , Markus Boehm , Helmut Krcmar

{"title":"Methods to analyze customer usage data in a product decision process:A systematic literature review","authors":"Christian Micus , Simon Schramm , Markus Boehm , Helmut Krcmar","doi":"10.1016/j.orp.2023.100277","DOIUrl":"10.1016/j.orp.2023.100277","url":null,"abstract":"<div><p>To remain competitive, companies must decide on new, desirable products. This can be achieved by integrating insights how customers use a product into the process of deciding on a new product. Currently, this process is primarily based on market research that can only reveal the intention of consumers. Through the digitization of products, companies have access to large amounts of customer data that allow the application of data analytics methods. We provide a taxonomy of artificial intelligence, machine learning and data analysis, so that the notion of data analytics can be defined. Thus, the terms customer usage data, as well as a generic, five-stage product decision process (PDP) are defined and differentiated from consumer data and the product development process. Eventually, we show which data analytics methods on customer usage data can be used in order to tackle current challenges within the PDP. We incorporate the results of our structured literature review by connecting selected examples to our concept of the PDP. Our insights help to apply the proper data analytics methods in the PDP and thereby address the interplay between product decision and product development. Finally, future research directions for data analytics methods on customer usage data are put forward.</p></div>","PeriodicalId":38055,"journal":{"name":"Operations Research Perspectives","volume":"10 ","pages":"Article 100277"},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45647610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Corrigendum to modeling multicriteria group decision making as games from enhanced pairwise comparisons [Operations Research Perspectives 8 (2021) 100194] 从增强的两两比较中将多标准群体决策建模为游戏的勘误表[运筹学展望8 (2021)100194]

IF 2.5 4区管理学

Operations Research Perspectives Pub Date : 2023-01-01 Epub Date: 2022-05-17 DOI: 10.1016/j.orp.2022.100239

Alexandre Bevilacqua Leoneti , Luiz Flavio Autran Monteiro Gomes

引用次数: 0

Efficiency in university hospitals: A genetic optimized semi-parametric production function 大学医院效率:一个遗传优化的半参数生产函数

IF 2.5 4区管理学

Operations Research Perspectives Pub Date : 2023-01-01 Epub Date: 2023-05-18 DOI: 10.1016/j.orp.2023.100279

Peter Wanke , Claudia Araujo , Yong Tan , Jorge Antunes , Roberto Pimenta

{"title":"Efficiency in university hospitals: A genetic optimized semi-parametric production function","authors":"Peter Wanke , Claudia Araujo , Yong Tan , Jorge Antunes , Roberto Pimenta","doi":"10.1016/j.orp.2023.100279","DOIUrl":"10.1016/j.orp.2023.100279","url":null,"abstract":"<div><p>This paper investigates the social-welfare efficiency drivers of public university hospitals in Brazil by focusing on how the surrounding social welfare conditions may affect their performance. A novel Genetic Envelopment Analysis (GEA) approach is developed here to this end. Subsequently, LASSO regression is applied to filter the impact of social-welfare related variables –on efficiency scores. Results indicate that beds, number of employees and number of doctors are the influential factors in determining the efficiency level, while the operating scales are not relevant to the productivity level. We further find that there is a degree of difference related to the efficiency level among the hospitals in the sample. Finally, our results show that GEA estimates present higher discrimination and dispersion compared to DEA, SFA and TOPSIS, also GEA provides the most reliable and accurate results. In the second stage analysis, we find that female population ratio and high school ratio significantly affect the efficiency level in a negative manner, while the urban population ratio has a significant and positive impact. Based on these results, we provide important policy implications.</p></div>","PeriodicalId":38055,"journal":{"name":"Operations Research Perspectives","volume":"10 ","pages":"Article 100279"},"PeriodicalIF":2.5,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45279242","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"管理学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

One-parametric analysis of column-oriented linear programs 面向列线性规划的一参数分析

IF 2.5 4区管理学

Operations Research Perspectives Pub Date : 2023-01-01 Epub Date: 2023-05-06 DOI: 10.1016/j.orp.2023.100278

Torbjörn Larsson, Nils-Hassan Quttineh

引用次数: 0

Retraction notice to “SIR model for the spread of COVID-19: A case study” [Operations Research Perspectives 10 (2023) 100265] 关于“新冠肺炎传播的SIR模型:案例研究”的撤稿通知[运筹学展望10 (2023)100265]

IF 2.5 4区管理学

Operations Research Perspectives Pub Date : 2023-01-01 Epub Date: 2023-05-24 DOI: 10.1016/j.orp.2023.100280

Ayoob Salimipour , Toktam Mehraban , Hevi Seerwan Ghafour , Noreen Izza Arshad , M.J. Ebadi

引用次数: 0