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International Conference on Operations Research and Enterprise Systems最新文献

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On the Advancement of Project Management through a Flexible Integration of Machine Learning and Operations Research Tools 通过机器学习和运筹学工具的灵活集成推进项目管理
International Conference on Operations Research and Enterprise Systems Pub Date : 2019-02-19 DOI: 10.5220/0007387103620369
Nikos Kanakaris, N. Karacapilidis, Alexis Lazanas
{"title":"On the Advancement of Project Management through a Flexible Integration of Machine Learning and Operations Research Tools","authors":"Nikos Kanakaris, N. Karacapilidis, Alexis Lazanas","doi":"10.5220/0007387103620369","DOIUrl":"https://doi.org/10.5220/0007387103620369","url":null,"abstract":"Project Management is a complex practice that is associated with a series of challenges to organizations and experts worldwide. Aiming to advance this practice, this paper proposes a hybrid approach that builds on the synergy between contemporary Machine Learning and Operations Research tools. The proposed approach integrates the predictive orientation of Machine Learning techniques with the prescriptive nature of Operations Research algorithms. It can aid the planning, monitoring and execution of common PM tasks such as resource allocation, task assignment, and task duration estimation. The applicability of our approach is demonstrated through two realistic examples.","PeriodicalId":235376,"journal":{"name":"International Conference on Operations Research and Enterprise Systems","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133807294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
A State Dependent Chat System Model 状态依赖的聊天系统模型
International Conference on Operations Research and Enterprise Systems Pub Date : 2019-02-19 DOI: 10.5220/0007391001210132
P. Enqvist, G. Svensson
{"title":"A State Dependent Chat System Model","authors":"P. Enqvist, G. Svensson","doi":"10.5220/0007391001210132","DOIUrl":"https://doi.org/10.5220/0007391001210132","url":null,"abstract":"The main purpose of this paper is to introduce a model of a chat based communication system, as well as developing the necessary tools to enable resource optimization with regards to a measure of the service quality. The system is modeled by a Markov process in continuous time and with a countable state space. The construction of the intensity matrix corresponding to this system is outlined and proofs of a stationary state distribution and an efficient way of calculating it are introduced. A numerical example for system optimization when the service measure is the average sojourn time is included as well as a heuristic algorithm for quicker solution generation.","PeriodicalId":235376,"journal":{"name":"International Conference on Operations Research and Enterprise Systems","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116384295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Iterative Request Exchange Mechanism for Carrier Collaboration in Less than Truckload Transportation 小货车运输中承运人协作的迭代请求交换机制
International Conference on Operations Research and Enterprise Systems Pub Date : 2019-02-19 DOI: 10.5220/0007368602990306
Xiaohui Lyu, Haoxun Chen, Nengmin Wang
{"title":"An Iterative Request Exchange Mechanism for Carrier Collaboration in Less than Truckload Transportation","authors":"Xiaohui Lyu, Haoxun Chen, Nengmin Wang","doi":"10.5220/0007368602990306","DOIUrl":"https://doi.org/10.5220/0007368602990306","url":null,"abstract":"In carrier collaboration, multiple carriers form an alliance and exchange some of their transportation requests to improve the overall profit of the alliance and the individual profit of each carrier. In this paper, we propose a mechanism for the request exchange with limited information sharing among the carriers. In each round of the mechanism, each carrier first outsources multiple bundles of requests with the corresponding transfer payments and then insources bundles of requests from other carriers. The auctioneer reassigns bundles of requests among carriers based on the outsourcing bundles and insourcing bundles of requests. The auction mechanism iterates until a certain criterion is met. Numerical experiments on randomly generated instances show that our iterative request exchange mechanism can provide high quality solutions.","PeriodicalId":235376,"journal":{"name":"International Conference on Operations Research and Enterprise Systems","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116069753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Newsvendor Model for Multi-Inputs and -Outputs with Random Yield: Applications to Agricultural Processing Industries 具有随机产量的多投入产出报贩模型:在农业加工业中的应用
International Conference on Operations Research and Enterprise Systems Pub Date : 2019-02-19 DOI: 10.5220/0007346900720081
Kannapha Amaruchkul
{"title":"Newsvendor Model for Multi-Inputs and -Outputs with Random Yield: Applications to Agricultural Processing Industries","authors":"Kannapha Amaruchkul","doi":"10.5220/0007346900720081","DOIUrl":"https://doi.org/10.5220/0007346900720081","url":null,"abstract":"Consider a newsvendor model, which we extend to include both multiple inputs and outputs. Different input types possess different levels of quality, and are purchased at different prices by a processing firm. Each type of input is processed into multiple outputs, which are sold at different prices. The yield for each output type is random and depends on the input type. We need to determine the purchase quantities of different types of input, before demands of different types of output are known. In our analytical results, we show that the expected total profit is jointly concave in the purchasing quantities and derive the optimality condition. Our multi-input and -output newsvendor model is suitable for processing industries in agriculture supply chain. In our numerical example, we apply our model to the rice milling industry, whose primary output is head rice and byproducts are broken rice, bran and husk. Our model can help the rice mill to decide which paddy types to procure and how much, in order to maximize the total expected profit from all outputs. We also show that the expected profit can be significantly better than using the standard newsvendor model.","PeriodicalId":235376,"journal":{"name":"International Conference on Operations Research and Enterprise Systems","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132864601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
A Heuristic Method for the Multi-skill Project Scheduling Problem with Partial Preemption 多技能项目部分抢占调度问题的一种启发式方法
International Conference on Operations Research and Enterprise Systems Pub Date : 2019-02-19 DOI: 10.5220/0007390001110120
Oliver Polo-Mejía, C. Artigues, P. Lopez
{"title":"A Heuristic Method for the Multi-skill Project Scheduling Problem with Partial Preemption","authors":"Oliver Polo-Mejía, C. Artigues, P. Lopez","doi":"10.5220/0007390001110120","DOIUrl":"https://doi.org/10.5220/0007390001110120","url":null,"abstract":"In this article we consider a new scheduling problem known as the Multi-Skill Project Scheduling Problem with Partial Preemption. The main characteristic of this problem is the way we handle the resources release during the preemption periods: only a subset of resources are released. Since this problem is NP-hard, we propose a greedy algorithm based on priority rules, modeling the subproblem of technicians allocation as a Minimum-Cost Maximum-Flow problem. In order to improve the performance of the greedy algorithm, we propose a randomized tree-based local search algorithm. Computational tests are carried out and analyzed.","PeriodicalId":235376,"journal":{"name":"International Conference on Operations Research and Enterprise Systems","volume":"180 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122196805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Decision Models as Software Artifacts - Bridging the Business-Software Gap for Decision Support Systems 作为软件工件的决策模型——为决策支持系统弥合业务与软件之间的差距
International Conference on Operations Research and Enterprise Systems Pub Date : 2018-09-02 DOI: 10.5220/0004282000860095
Armando Guarnaschelli, O. Chiotti, H. E. Salomone
{"title":"Decision Models as Software Artifacts - Bridging the Business-Software Gap for Decision Support Systems","authors":"Armando Guarnaschelli, O. Chiotti, H. E. Salomone","doi":"10.5220/0004282000860095","DOIUrl":"https://doi.org/10.5220/0004282000860095","url":null,"abstract":"In this work we introduce a methodology for integrating the development of decision models with model driven software development approaches. This methodology captures the relationships between service oriented architecture software models and decision models by deriving from a common reference model, the data and conceptual elements of both types of models. Using this reference model and through successive model transformations and refinements, the methodology delivers integrated models and implementation models of software aimed to be more resilient to changes in business models. As all software artifacts are connected through a unique reference model, the collaboration with business partners is enabled at all levels by sharing or reusing existent reference models.","PeriodicalId":235376,"journal":{"name":"International Conference on Operations Research and Enterprise Systems","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114905632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A Fuzzy Approach to Risk Analysis in Information Systems 信息系统风险分析的模糊方法
International Conference on Operations Research and Enterprise Systems Pub Date : 2018-08-31 DOI: 10.5220/0004212001300133
E. Vicente, A. Jiménez-Martín, A. Mateos
{"title":"A Fuzzy Approach to Risk Analysis in Information Systems","authors":"E. Vicente, A. Jiménez-Martín, A. Mateos","doi":"10.5220/0004212001300133","DOIUrl":"https://doi.org/10.5220/0004212001300133","url":null,"abstract":"Assets are interrelated in risk analysis methodologies for information systems promoted by international standards. This means that an attack on one asset can be propagated through the network and threaten an organization’s most valuable assets. It is necessary to valuate all assets, the direct and indirect asset dependencies, as well as the probability of threats and the resulting asset degradation. These methodologies do not, however, consider uncertain valuations and use precise values on different scales, usually percentages. Linguistic terms are used by the experts to represent assets values, dependencies and frequency and asset degradation associated with possible threats. Computations are based on the trapezoidal fuzzy numbers associated with these linguistic terms.","PeriodicalId":235376,"journal":{"name":"International Conference on Operations Research and Enterprise Systems","volume":"19 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125890037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Business Process Enterprise Model - Operations Research for Managing Business Process Communication and Performance 业务流程企业模型——管理业务流程通信和性能的运筹学
International Conference on Operations Research and Enterprise Systems Pub Date : 2018-08-24 DOI: 10.5220/0003718200110020
Y. Caseau
{"title":"Business Process Enterprise Model - Operations Research for Managing Business Process Communication and Performance","authors":"Y. Caseau","doi":"10.5220/0003718200110020","DOIUrl":"https://doi.org/10.5220/0003718200110020","url":null,"abstract":"This paper presents a computational model of a generic enterprise (BPEM, which stands for Business Process Enterprise Model), based upon the core concept of business process. BPEM may be seen as a bridge between two worlds of “Enterprise Models”, the world of mathematical models, formal and fully operational for optimization purposes and the world of conceptual models (boxes & arrows type) for management science, for reasoning and communicating about what a company is. Our model was built as the minimal and most elegant model that is detailed enough to investigate difficult management science issues such as the influence of hierarchical organization on performance, the optimal usage of various communication channels or the benefits of lean-management-style control of processes. BPEM is organized around four concepts: business processes, capabilities that encapsulate resource management, hierarchical and transverse management organization, as well as information flows that are required to run business","PeriodicalId":235376,"journal":{"name":"International Conference on Operations Research and Enterprise Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129884227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evidence for the Relationship between Pilot Effectiveness, Surface Anomalies, and Operational Efficiency Data 飞行员效能、地表异常和操作效率数据之间关系的证据
International Conference on Operations Research and Enterprise Systems Pub Date : 2018-08-22 DOI: 10.5220/0004273302360241
D. Howell, S. Borener
{"title":"Evidence for the Relationship between Pilot Effectiveness, Surface Anomalies, and Operational Efficiency Data","authors":"D. Howell, S. Borener","doi":"10.5220/0004273302360241","DOIUrl":"https://doi.org/10.5220/0004273302360241","url":null,"abstract":"To justify an investment in a safety-related program, the U.S. Federal Aviation Administration must develop a business justification with a positive return on investment. While the assumed value of an avoided aviation accident is quite large, the rarity of such events many times makes a business case built strictly on safety metrics untenable. It is therefore helpful to examine if there are efficiency or capacity impacts related to the investment. One area of interest to the aviation safety community is fatigue and pilot effectiveness. Previous research has examined the connection between operator fatigue and accident frequency. In this study, we examine the relationships between pilot effectiveness, measured surface anomalies, and archived operational efficiency data at Atlanta Hartsfield-Jackson International Airport and Memphis International Airport to provide evidence to support future taxi path conformance or crew rest requirement investments.","PeriodicalId":235376,"journal":{"name":"International Conference on Operations Research and Enterprise Systems","volume":"213 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114843526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Pareto Frontier for Vehicle Fleet Purchases - Cost versus Sustainability 车队采购的帕累托边界——成本与可持续性
International Conference on Operations Research and Enterprise Systems Pub Date : 2018-08-17 DOI: 10.5220/0004222901750182
Daniel Reich, S. Winkler, Erica Klampfl
{"title":"The Pareto Frontier for Vehicle Fleet Purchases - Cost versus Sustainability","authors":"Daniel Reich, S. Winkler, Erica Klampfl","doi":"10.5220/0004222901750182","DOIUrl":"https://doi.org/10.5220/0004222901750182","url":null,"abstract":"Vehicle fleets for large corporations can have thousands of vehicles that are replaced between every few months and every few years. With the emergence of hybrid, plug-in hybrid, and other new vehicle technologies, combined with an increasing focus on sustainability, planning fleet purchases has and continues to become a significantly more complicated undertaking. This paper introduces Ford’s Fleet Purchase Planner system designed to present fleet customers with optimal purchase strategies that incorporate their companies’ cost and sustainability considerations.","PeriodicalId":235376,"journal":{"name":"International Conference on Operations Research and Enterprise Systems","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128695158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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