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2017 Winter Simulation Conference (WSC)最新文献

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Multi-fidelity simulation optimization with level set approximation using probabilistic branch and bound 基于概率分支定界的水平集近似的多保真度仿真优化
2017 Winter Simulation Conference (WSC) Pub Date : 2017-12-03 DOI: 10.1109/WSC.2017.8247939
David D. Linz, Hao Huang, Z. Zabinsky
{"title":"Multi-fidelity simulation optimization with level set approximation using probabilistic branch and bound","authors":"David D. Linz, Hao Huang, Z. Zabinsky","doi":"10.1109/WSC.2017.8247939","DOIUrl":"https://doi.org/10.1109/WSC.2017.8247939","url":null,"abstract":"Simulated systems are often described with a variety of models of different complexity. Making use of these models, algorithms can use low complexity, “low-fidelity” models or meta-models to guide sampling for purposes of optimization, improving the probability of generating good solutions with a small number of observations. We propose an optimization algorithm that guides the search for solutions on a high-fidelity model through the approximation of a level set from a low-fidelity model. Using the Probabilistic Branch and Bound algorithm to approximate a level set for the low-fidelity model, we are able to efficiently locate solutions inside of a target quantile and therefore reduce the number of high-fidelity evaluations needed in searches. The paper provides an algorithm and analysis showing the increased probability of sampling high-quality solutions within a low-fidelity level set. We include numerical examples that demonstrate the effectiveness of the multi-fidelity level set approximation method to locate solutions.","PeriodicalId":145780,"journal":{"name":"2017 Winter Simulation Conference (WSC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131470364","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: 3
Virtual time III: Unification of conservative and optimistic synchronization in parallel discrete event simulation 虚拟时间III:并行离散事件仿真中保守与乐观同步的统一
2017 Winter Simulation Conference (WSC) Pub Date : 2017-12-03 DOI: 10.1109/WSC.2017.8247832
D. Jefferson, P. Barnes
{"title":"Virtual time III: Unification of conservative and optimistic synchronization in parallel discrete event simulation","authors":"D. Jefferson, P. Barnes","doi":"10.1109/WSC.2017.8247832","DOIUrl":"https://doi.org/10.1109/WSC.2017.8247832","url":null,"abstract":"There has long been a divide in synchronization approaches for parallel discrete event simulation, between conservative methods requiring lookahead and optimistic methods requiring rollback. These are usually seen as dichotomous, so that a model writer must make an early, static design decision between them. An optimistic simulator does not need lookahead information but is unable to take advantage of it even if it were available, whereas a conservative simulator may perform poorly or even deadlock without good lookahead information. Here we introduce unified virtual time (UVT) synchronization which provides the advantages of both conservative and optimistic synchronization dynamically for all models. Conservative synchronization becomes an accelerator for optimistic synchronization. When lookahead information is available the simulation will execute conservatively. Otherwise it will execute optimistically. In this paper we present UVT, argue for its correctness, and show adaptations of Time Warp, YAWNS, and Null Messages which cooperatively synchronize a single simulation.","PeriodicalId":145780,"journal":{"name":"2017 Winter Simulation Conference (WSC)","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131628278","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
Improving patient waiting time at a pure walk-in clinic 改善患者在纯免预约诊所的等待时间
2017 Winter Simulation Conference (WSC) Pub Date : 2017-12-03 DOI: 10.1109/WSC.2017.8248001
Haydon D. Reese, V. Anandhan, Eduardo Pérez, C. Novoa
{"title":"Improving patient waiting time at a pure walk-in clinic","authors":"Haydon D. Reese, V. Anandhan, Eduardo Pérez, C. Novoa","doi":"10.1109/WSC.2017.8248001","DOIUrl":"https://doi.org/10.1109/WSC.2017.8248001","url":null,"abstract":"Walk-in clinics have grown in popularity in the United States as a substitute for traditional medical care delivered in primary care clinics and emergency rooms. Walk-in clinics offer an affordable option for basic medical services when compared to a hospital emergency room or an urgent care clinic. This type of medical facility simplifies the health care process for many patients with non-life threatening conditions since no previous appointments are required to see a provider. However, the open access nature and lack of patient scheduling can lead to long wait times for patients or long periods of idle time for providers. In this paper, we derive a discrete event simulation model to study pure walk-in clinics where patients are served without appointments. A case study is discussed that considers a walk-in clinic located in central Texas. The computational study provides useful insights that are applicable to any walk-in health care facility.","PeriodicalId":145780,"journal":{"name":"2017 Winter Simulation Conference (WSC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133582715","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
The impact of item weight on travel times in picker-to-parts order picking: An agent-based simulation approach 货物重量对拣货到零件订单拣货运输时间的影响:一种基于智能体的模拟方法
2017 Winter Simulation Conference (WSC) Pub Date : 2017-12-03 DOI: 10.1109/WSC.2017.8248035
R. Elbert, Jan-Philipp Müller
{"title":"The impact of item weight on travel times in picker-to-parts order picking: An agent-based simulation approach","authors":"R. Elbert, Jan-Philipp Müller","doi":"10.1109/WSC.2017.8248035","DOIUrl":"https://doi.org/10.1109/WSC.2017.8248035","url":null,"abstract":"In picker-to-parts order picking the traveling of the order picker between the storage locations account for approximately 50 % of the overall time. Reducing travel times can therefore substantially improve the productivity. Hereby, current research has almost exclusively focused on minimizing the travel distance and assumed a constant velocity of the order picker. However transported item weight can significantly influence the velocity and consequently travel times as well. Hence, the paper at hand analyzes to which extent travel times vary in dependence of item weights in the warehouse. New weight class based storage assignment policies are investigated. Their aim is to locate the items in the storage area according to their weight so that the heaviest items are collected at the end of the order picker's tours. Agent-based simulation experiments confirm that the new policies can significantly reduce travel times.","PeriodicalId":145780,"journal":{"name":"2017 Winter Simulation Conference (WSC)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132683872","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
Hypothesis-driven experiment design in computer simulation studies 计算机仿真研究中的假设驱动实验设计
2017 Winter Simulation Conference (WSC) Pub Date : 2017-12-03 DOI: 10.1109/WSC.2017.8247880
F. Lorig, Daniel S. Lebherz, J. Berndt, I. Timm
{"title":"Hypothesis-driven experiment design in computer simulation studies","authors":"F. Lorig, Daniel S. Lebherz, J. Berndt, I. Timm","doi":"10.1109/WSC.2017.8247880","DOIUrl":"https://doi.org/10.1109/WSC.2017.8247880","url":null,"abstract":"In simulation studies, the goal specifies the objective or purpose of the study and thus drives the entire experimentation process. Relevant experiments and respective experiment hypotheses are derived from the study's goal and the model's observed behavior provides evidence whether these hypotheses hold. Current assistance systems do not integrate research hypotheses. Thus, the researcher has to make important design decisions which limits both replicability and reproducibility of the results. In this paper, the process of simulation studies is systematized based on a formally specified hypothesis. By this means, the research hypothesis becomes the key element of the study and guides the entire process. Hypothesis-driven simulation studies allow for the automated design, execution, and evaluation of experiments based on specific research questions. This facilitates documentation and execution as well as replication of simulation studies.","PeriodicalId":145780,"journal":{"name":"2017 Winter Simulation Conference (WSC)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133343140","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: 17
The importance of the computer simulation archive 计算机仿真档案的重要性
2017 Winter Simulation Conference (WSC) Pub Date : 2017-12-03 DOI: 10.1109/WSC.2017.8247798
G. Raschke, Susan K. Nutter
{"title":"The importance of the computer simulation archive","authors":"G. Raschke, Susan K. Nutter","doi":"10.1109/WSC.2017.8247798","DOIUrl":"https://doi.org/10.1109/WSC.2017.8247798","url":null,"abstract":"This paper discusses the importance, historical significance, and prestige of the Computer Simulation Archive (https://d.lib.ncsu.edu/computer-simulation/) at North Carolina State University Libraries, including its importance to the field of simulation and its place in the broader context of esearch library archival collections.","PeriodicalId":145780,"journal":{"name":"2017 Winter Simulation Conference (WSC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133512111","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
Overcoming challenges in educational stem game design and development 克服教育系统游戏设计和开发中的挑战
2017 Winter Simulation Conference (WSC) Pub Date : 2017-12-03 DOI: 10.1109/WSC.2017.8247837
Katherine Smith, John B. Shull, Yuzhong Shen, A. Dean, J. Michaeli
{"title":"Overcoming challenges in educational stem game design and development","authors":"Katherine Smith, John B. Shull, Yuzhong Shen, A. Dean, J. Michaeli","doi":"10.1109/WSC.2017.8247837","DOIUrl":"https://doi.org/10.1109/WSC.2017.8247837","url":null,"abstract":"Captivate is a mobile game for STEM in higher education. In the development of Captivate, the employment of popular game mechanics and development of a set of mathematical tools have allowed developers to overcome some of the problems commonly facing developers of educational STEM games for higher education. Game mechanics from a variety of popular games are incorporated which supports player engagement by providing a familiar narrative to each game. Additionally, mathematical tools have been developed which provide symbolic and numeric manipulation capabilities within the game. These tools allow for graphing, problem generation and display, multiple types of player input, and evaluation of player answers all to be conducted at run time. This paper details how challenges were overcome and addressed in Captivate with examples, namely display and manipulation of complex expressions and the complexity and length of problems.","PeriodicalId":145780,"journal":{"name":"2017 Winter Simulation Conference (WSC)","volume":"73 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134025126","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: 6
Stockyard: A discrete event-based stock market exchange simulator Stockyard:一个基于离散事件的股票市场交易模拟器
2017 Winter Simulation Conference (WSC) Pub Date : 2017-12-03 DOI: 10.1109/WSC.2017.8247866
Jianling Wang, Vivek George, T. Balch, M. Hybinette
{"title":"Stockyard: A discrete event-based stock market exchange simulator","authors":"Jianling Wang, Vivek George, T. Balch, M. Hybinette","doi":"10.1109/WSC.2017.8247866","DOIUrl":"https://doi.org/10.1109/WSC.2017.8247866","url":null,"abstract":"We describe an agent-based stock market simulator built using an asynchronous discrete event simulation framework. The simulator is unique in that it's driven by real-world financial algorithms and protocols; and it's open source. It utilizes an order book bid and ask matching model, and real-world exchange protocols. Our simulation is based on multiple agents interacting through an exchange agent. This method is distinct from those that utilize historical pricing data. Order book execution supports a more realistic interaction between agents. Pricing in our model arises from the dynamics of matching orders in the order book. Our simulator enables the study of market dynamics, and trading strategies using real-world exchange protocols. We present our design and implementation of a market simulator and discuss our initial results using the message protocols defined by NASDAQ: OUCH and ITCH. Our initial results demonstrate StockYard's capability and efficiency in simulating markets with realistic trade volumes.","PeriodicalId":145780,"journal":{"name":"2017 Winter Simulation Conference (WSC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132282556","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: 5
Towards systematic reliability modeling of smart buildings 智能建筑系统可靠性建模研究
2017 Winter Simulation Conference (WSC) Pub Date : 2017-12-03 DOI: 10.1109/WSC.2017.8247977
S. Lazarova-Molnar, Elena Markoska, H. Shaker
{"title":"Towards systematic reliability modeling of smart buildings","authors":"S. Lazarova-Molnar, Elena Markoska, H. Shaker","doi":"10.1109/WSC.2017.8247977","DOIUrl":"https://doi.org/10.1109/WSC.2017.8247977","url":null,"abstract":"Building Management Systems (BMS) monitor and control smart buildings. We are witnessing a trend of BMS becoming increasingly sophisticated and delivering more advanced services. The downside of this is that the complexity of BMS is also increasing, thus, making smart buildings vulnerable to various malfunctions and faults. We anticipate that reliability of smart buildings will be gaining in importance, especially for BMS of critical buildings, such as hospitals or buildings that host emergency services or store sensitive materials or technologies, whose unreliable operation could have catastrophic consequences. The assistance, however, is in the large amounts of easily available data that implies possibilities for development of highly accurate reliability models. Cloud computing can be also utilized to support collaborative sharing and benefitting from each other building's data. To utilize all of the above stated, we have developed a cloud-based BMS reliability analysis framework that we describe and illustrate in this paper.","PeriodicalId":145780,"journal":{"name":"2017 Winter Simulation Conference (WSC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134182038","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
Quality based scheduling for an example of semiconductor manufactory 以半导体工厂为例的质量调度
2017 Winter Simulation Conference (WSC) Pub Date : 2017-12-03 DOI: 10.1109/WSC.2017.8248086
W. Chan, A. D’Ambrogio, G. Zacharewicz, N. Mustafee, Gabriel A. Wainer, E. Page
{"title":"Quality based scheduling for an example of semiconductor manufactory","authors":"W. Chan, A. D’Ambrogio, G. Zacharewicz, N. Mustafee, Gabriel A. Wainer, E. Page","doi":"10.1109/WSC.2017.8248086","DOIUrl":"https://doi.org/10.1109/WSC.2017.8248086","url":null,"abstract":"Quality is an important measurement within a semiconductor manufactory. Due to the fact that yield is directly affected by quality of the manufacturing process, in this paper a quality based scheduling approach will be presented which compares different methods like dispatching, MIP and CP, regarding different objectives. To test the different used methods a benchmark model of a semiconductor manufactory is build up. Here a lithography work center is used in detail where the rest of the fabrication is only build up as a delay station. With this model the repeatability for the example of a lithography step is investigated. Thereby in this investigation it is assumed, that each lithography tool has an offset which is transferred to the structure. Now the quality of a product should be best, if the offset from one layer to the next layer is minimized.","PeriodicalId":145780,"journal":{"name":"2017 Winter Simulation Conference (WSC)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114063239","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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