Proceedings of the Winter Simulation Conference 2014最新文献_第6页

Yard crane deployment in container terminals 堆场起重机在集装箱码头的部署

Proceedings of the Winter Simulation Conference 2014 Pub Date : 2014-12-07 DOI: 10.1109/WSC.2014.7020023

Shell-Ying Huang, Ya Li, Meimei Lau, T. C. Tay

引用次数: 4

A comprehensive simulation modeling of an emergency department: A case study for simulation optimization of staffing levels 急诊科综合仿真建模:人员配置水平仿真优化案例研究

Proceedings of the Winter Simulation Conference 2014 Pub Date : 2014-12-07 DOI: 10.1109/WSC.2014.7019996

K. Ghanes, O. Jouini, Zied Jemaï, M. Wargon, R. Hellmann, Valérie Thomas, G. Koole

引用次数: 34

Efficient Monte Carlo CVA estimation 有效的蒙特卡罗CVA估计

Proceedings of the Winter Simulation Conference 2014 Pub Date : 2014-12-07 DOI: 10.1109/WSC.2014.7019911

Samim Ghamami, Bo Zhang

引用次数: 0

On adaptive sampling rules for stochastic recursions 随机递归的自适应抽样规则

Proceedings of the Winter Simulation Conference 2014 Pub Date : 2014-12-07 DOI: 10.1109/WSC.2014.7020221

F. Hashemi, Soumyadip Ghosh, R. Pasupathy

{"title":"On adaptive sampling rules for stochastic recursions","authors":"F. Hashemi, Soumyadip Ghosh, R. Pasupathy","doi":"10.1109/WSC.2014.7020221","DOIUrl":"https://doi.org/10.1109/WSC.2014.7020221","url":null,"abstract":"We consider the problem of finding a zero of an unknown function, or optimizing an unknown function, with only a stochastic simulation that outputs noise-corrupted observations. A convenient paradigm to solve such problems takes a deterministic recursion, e.g., Newton-type or trust-region, and replaces function values and derivatives appearing in the recursion with their sampled counterparts. While such a paradigm is convenient, there is as yet no clear guidance on how much simulation effort should be expended as the resulting recursion evolves through the search space. In this paper, we take the first steps towards answering this question. We propose using a fully sequential Monte Carlo sampling method to adaptively decide how much to sample at each point visited by the stochastic recursion. The termination criterion for such sampling is based on a certain relative width confidence interval constructed to ensure that the resulting iterates are consistent, and efficient in a rigorous (Monte Carlo canonical) sense. The methods presented here are adaptive in the sense that they “learn” to sample according to the algorithm trajectory. In this sense, our methods should be seen as refining recent methods in a similar context that use a predetermined sequence of sample sizes.","PeriodicalId":446873,"journal":{"name":"Proceedings of the Winter Simulation Conference 2014","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131118350","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: 29

Enabling simheuristics through designs for tens of variables: Costing models and online availability 通过数十个变量的设计实现相似启发式:成本模型和在线可用性

Proceedings of the Winter Simulation Conference 2014 Pub Date : 2014-12-07 DOI: 10.1109/WSC.2014.7020034

Yaileen M. Méndez-Vázquez, Kasandra L. Ramírez-Rojas, Hecny Pérez-Candelario, M. Cabrera-Ríos

引用次数: 2

Sensitivity analysis for a whole hospital system dynamics model 全医院系统动力学模型的敏感性分析

Proceedings of the Winter Simulation Conference 2014 Pub Date : 2014-12-07 DOI: 10.1109/WSC.2014.7019986

Raymond L. Smith, S. D. Roberts

{"title":"Sensitivity analysis for a whole hospital system dynamics model","authors":"Raymond L. Smith, S. D. Roberts","doi":"10.1109/WSC.2014.7019986","DOIUrl":"https://doi.org/10.1109/WSC.2014.7019986","url":null,"abstract":"This paper presents a sensitivity analysis of unit capacity and patient flow for a hospital-wide system consisting of interdependent clinical and ancillary departments. The research employs system dynamics to model a hospital-wide system representative of a medium size, semi-urban, acute care community hospital. A sensitivity analysis using regression methods examines emergency department performance in the context of the hospital-wide system using a modified formulation of the Overall Equipment Effectiveness (OEE) hierarchy of metrics as a key performance indicator. The modified OEE metric demonstrates its usefulness first for the purpose of conducting a group screening design, and second for the purpose of performing the sensitivity analysis. The main results of the sensitivity analysis indicate that emergency department performance depends significantly on the unit capacity and patient flow in departments hospital-wide. More importantly, the analysis provides quantitative insight into the factors deemed to be important, their interactive relationships across departments, and their overall relative importance. These findings are useful for recommending hospital-wide performance improvement initiatives.","PeriodicalId":446873,"journal":{"name":"Proceedings of the Winter Simulation Conference 2014","volume":"395 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116524018","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 hybrid optimization-simulation approach for itinerary generation 行程生成的混合优化-仿真方法

Proceedings of the Winter Simulation Conference 2014 Pub Date : 2014-12-07 DOI: 10.1109/WSC.2014.7020036

Feng Cheng, B. Baszczewski, J. Gulding

{"title":"A hybrid optimization-simulation approach for itinerary generation","authors":"Feng Cheng, B. Baszczewski, J. Gulding","doi":"10.1109/WSC.2014.7020036","DOIUrl":"https://doi.org/10.1109/WSC.2014.7020036","url":null,"abstract":"Simulation models are often employed to evaluate projected future performance of the US National Airspace System (NAS) for the purposes of long-term aviation investment planning and performance benchmarking. The future schedules are developed as input for simulation to represent the forecast for airport operations. The itinerary structure of a future schedule has a significant impact on the operational characteristics such as schedule peaks and aircraft utilization. Itinerary generation algorithms seeking to maximize the aircraft utilization may cause schedule smoothing or de-peaking which is undesirable for airlines wishing to maintain their schedule peaks. In addition, itineraries with high aircraft utilization are likely to have more propagated delay. To achieve a certain level of balance between aircraft utilization and a desired level of schedule peaks and delay performance is a complex task for the itinerary generation process especially when the entire NAS is involved. This paper proposes a new method for creating future itineraries based on a hybrid solution of simulation and optimization techniques. The Mixed-Integer Programming (MIP) technique is used to solve the itinerary generation problem with the objective to maximize the aircraft utilization of the itinerary structure of the flights. The simulation technique is used to evaluate the performance of the NAS in terms of delay with the generated itineraries from the MIP solution. Based on the output of the simulation, the MIP model will be modified by adjusting its parameters and solved again. This iterative process will continue until the desired result is obtained from the simulation. This paper also provides a quantitative analysis to demonstrate a trade-off between the de-peaking strategies that minimize the number of aircraft in service and the banking strategies that maintain schedule banks.","PeriodicalId":446873,"journal":{"name":"Proceedings of the Winter Simulation Conference 2014","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127641305","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

AddSIM: A new Korean engagement simulation environment using high resolution models AddSIM:使用高分辨率模型的新型韩国交战模拟环境

Proceedings of the Winter Simulation Conference 2014 Pub Date : 2014-12-07 DOI: 10.1109/WSC.2014.7020134

Hyun-Shik Oh, Samjoon Park, HyungJun Kim, Taeho Lee, Sangjin Lee, Dohyung Kim, Ockhyun Paek, Ju-Hye Park

引用次数: 4

A unified race algorithm for offline parameter tuning 一种用于离线参数调整的统一竞争算法

Proceedings of the Winter Simulation Conference 2014 Pub Date : 2014-12-07 DOI: 10.1109/WSC.2014.7020222

T. V. Dijk, M. Mes, J. M. Schutten, J. Gromicho

引用次数: 2

The simulation life-cycle: Supporting the data collection and representation phase 模拟生命周期:支持数据收集和表示阶段

Proceedings of the Winter Simulation Conference 2014 Pub Date : 2014-12-07 DOI: 10.1109/WSC.2014.7020117

James Byrne, P. J. Byrne, D. Ferreira, A. Ivers

引用次数: 5