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Improving Simulation Optimization Run Time When Solving for Periodic Review Inventory Policies in a Pharmacy 改进药房定期审核库存策略的仿真优化运行时间
2021 Winter Simulation Conference (WSC) Pub Date : 2021-12-12 DOI: 10.1109/WSC52266.2021.9715525
Lauren L. Czerniak, Mark S. Daskin, Mariel S. Lavieri, B. V. Sweet, J. Erley, Matthew A. Tupps
{"title":"Improving Simulation Optimization Run Time When Solving for Periodic Review Inventory Policies in a Pharmacy","authors":"Lauren L. Czerniak, Mark S. Daskin, Mariel S. Lavieri, B. V. Sweet, J. Erley, Matthew A. Tupps","doi":"10.1109/WSC52266.2021.9715525","DOIUrl":"https://doi.org/10.1109/WSC52266.2021.9715525","url":null,"abstract":"Pharmaceutical drugs are critical to patient care, but demand and supply uncertainties in this inventory system make decision-making a challenging task. In this paper, we present a simulation-optimization model that determines near-optimal $(s, S)$ periodic review inventory policies that minimize the expected cost per day. The model accounts for perishability, positive lead time, stochastic demand, and supply disruptions. We implement a Binary Grid-Search algorithm which uses the structure of the objective function to quickly solve the simulation-optimization model. The numerical results illustrate how the Binary Grid-Search algorithm performs 21 times faster (when performing 10,000 replications) in terms of run time when compared to an Exhaustive Grid-Search, without sacrificing solution accuracy. This paper provides an efficient method to solve for the near-optimal $(s, S)$ periodic review inventory policies which is essential in the pharmacy inventory system that handles thousands of different drugs.","PeriodicalId":369368,"journal":{"name":"2021 Winter Simulation Conference (WSC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133718373","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: 1
A Unified Offline-Online Learning Paradigm via Simulation for Scenario-Dependent Selection 基于情景依赖选择模拟的统一离线-在线学习范式
2021 Winter Simulation Conference (WSC) Pub Date : 2021-12-12 DOI: 10.1109/WSC52266.2021.9715378
Haitao Liu, Xiao Jin, Haobin Li, L. Lee, E. P. Chew
{"title":"A Unified Offline-Online Learning Paradigm via Simulation for Scenario-Dependent Selection","authors":"Haitao Liu, Xiao Jin, Haobin Li, L. Lee, E. P. Chew","doi":"10.1109/WSC52266.2021.9715378","DOIUrl":"https://doi.org/10.1109/WSC52266.2021.9715378","url":null,"abstract":"Simulation has primarily been used for offline static system design problems, and the simulation-based online decision making has been a weakness as the online decision epoch is tight. This work extends the scenario-dependent ranking and selection model by considering online scenario and budget. We propose a unified offline-online learning (UOOL) paradigm via simulation to find the best alternative conditional on the online scenario. The idea is to offline learn the relationship between scenarios and mean performance, and then dynamically allocates the online simulation budget based on the learned predictive model and online scenario information. The superior performance of UOOL paradigm is validated on four test functions by comparing it with artificial neural networks and decision tree.","PeriodicalId":369368,"journal":{"name":"2021 Winter Simulation Conference (WSC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134525012","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: 1
Sustainable Computing and Simulation: A Literature Survey 可持续计算与模拟:文献综述
2021 Winter Simulation Conference (WSC) Pub Date : 2021-12-12 DOI: 10.1109/WSC52266.2021.9715447
Suzanne M. DeLong, A. Tolk
{"title":"Sustainable Computing and Simulation: A Literature Survey","authors":"Suzanne M. DeLong, A. Tolk","doi":"10.1109/WSC52266.2021.9715447","DOIUrl":"https://doi.org/10.1109/WSC52266.2021.9715447","url":null,"abstract":"Smart technologies are everywhere and the creation of a smart world, from smart devices to smart cities is rapidly growing to potentially improve quality of life. Businesses, governments, and individual users of smart technology expect a level of service and access to data that is achieved through data and supercomputing centers. These centers potentially consume vast amounts of power and their continued growth may be unsustainable and contribute to greenhouse gasses. As smart technologies rely heavily on such computational capabilities their sustainability is pivotal for a smart future. This paper explores the literature to: identify the problems; categorize the challenges as well as possible solutions; explore how simulation and machine learning can improve computational sustainability; and consider the need to conduct trade-off analysis to determine when to apply simulation and machine learning benefits. A taxonomy for sustainable computing is presented for future research.","PeriodicalId":369368,"journal":{"name":"2021 Winter Simulation Conference (WSC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114326244","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
A Workflow For Data-Driven Fault Detection and Diagnosis In Buildings 基于数据驱动的楼宇故障检测与诊断工作流程
2021 Winter Simulation Conference (WSC) Pub Date : 2021-12-12 DOI: 10.1109/WSC52266.2021.9715464
Joseph Boi-Ukeme, Gabriel A. Wainer
{"title":"A Workflow For Data-Driven Fault Detection and Diagnosis In Buildings","authors":"Joseph Boi-Ukeme, Gabriel A. Wainer","doi":"10.1109/WSC52266.2021.9715464","DOIUrl":"https://doi.org/10.1109/WSC52266.2021.9715464","url":null,"abstract":"The evolution of smart buildings has been driven by technological advancement in building control systems, which made building systems more fragile and prone to faults. Buildings now generate an enormous amount of data, and the collection and analysis of such data is useful for detecting faults. However, fault detection approaches are not optimal in buildings due to several challenges. Data for fault detection is not readily available because of poor data collection practices and often when data is available, the data quality is inadequate to have useful models for fault detection and diagnosis (FDD). We propose a workflow for data-driven fault detection and diagnosis to deal with some of these challenges. The workflow incorporates a data collection framework and recommends the best data-driven modeling practices to improve data quality and model performance.","PeriodicalId":369368,"journal":{"name":"2021 Winter Simulation Conference (WSC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114849341","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: 1
Data-Driven Production Planning Formulations For Wafer Fabs: A Computational Study 数据驱动的晶圆厂生产计划公式:计算研究
2021 Winter Simulation Conference (WSC) Pub Date : 2021-12-12 DOI: 10.1109/wsc52266.2021.9715536
Tobias Volker, L. Monch
{"title":"Data-Driven Production Planning Formulations For Wafer Fabs: A Computational Study","authors":"Tobias Volker, L. Monch","doi":"10.1109/wsc52266.2021.9715536","DOIUrl":"https://doi.org/10.1109/wsc52266.2021.9715536","url":null,"abstract":"","PeriodicalId":369368,"journal":{"name":"2021 Winter Simulation Conference (WSC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117060516","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
Data-Driven Exploration of Lentic Water Bodies with ASVs Guided by Gradient-Free Optimization/Contour Detection Algorithms 基于无梯度优化/轮廓检测算法的asv数据驱动水体探测
2021 Winter Simulation Conference (WSC) Pub Date : 2021-12-12 DOI: 10.1109/WSC52266.2021.9715455
E. Besada-Portas, J. Girón-Sierra, J. Jiménez, J. Orozco
{"title":"Data-Driven Exploration of Lentic Water Bodies with ASVs Guided by Gradient-Free Optimization/Contour Detection Algorithms","authors":"E. Besada-Portas, J. Girón-Sierra, J. Jiménez, J. Orozco","doi":"10.1109/WSC52266.2021.9715455","DOIUrl":"https://doi.org/10.1109/WSC52266.2021.9715455","url":null,"abstract":"This paper presents a local-path planner for water quality monitoring involving an Autonomous Surface Vehicle (ASV). The planner determines new measuring waypoints based on the information collected so far, and on two gradient-free optimization and contour-detection algorithms. In particular, the optimization algorithm generates the locations where the variable/substance under study must be measured and use them as the waypoints of the external loop of the Guidance, Navigation and Control system of our ASV. Besides, the contour algorithm obtains useful waypoints to determine the water body locations where the variable/substance under study reaches a given value. The paper also analyzes how the approach works via progressive simulations over an ASV carefully modelled with a set of non-linear differential equations. Preliminary results suggest that the approach can be useful in real-world single-ASV water-quality monitoring missions where there is not previous knowledge of the state and location of the variable/substance under study.","PeriodicalId":369368,"journal":{"name":"2021 Winter Simulation Conference (WSC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123890693","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: 1
Availability and Stock Rupture Estimation By Using Continuous and Discrete Simulation Models 基于连续和离散仿真模型的可用性和库存断裂估计
2021 Winter Simulation Conference (WSC) Pub Date : 2021-12-12 DOI: 10.1109/WSC52266.2021.9715458
E. Ursini, H. Santos, M. Okano
{"title":"Availability and Stock Rupture Estimation By Using Continuous and Discrete Simulation Models","authors":"E. Ursini, H. Santos, M. Okano","doi":"10.1109/WSC52266.2021.9715458","DOIUrl":"https://doi.org/10.1109/WSC52266.2021.9715458","url":null,"abstract":"We propose a method to solve an Availability and Stock Rupture problem considering static and dynamic conditions. Information about failure and repair rates, dependence or independence of the blocks are considered, as well as knowledge about spare stock and Maintainability. The analysis is done, initially, using exponential processes, considering the transient solution by Matlab-Simulink. This analysis allows to evaluate the steady state solution and the main aspects that must be addressed through Discrete Event Simulation. We consider a situation in which it is possible to use two blocks, one in operation and one in the spare stock, with a single repairman. SLA (Service Level Agreement) contracts are common, which the parties involved sign and failure to comply with these contracts may result in a fine. An approach to improve the dimensioning of such systems in terms of their availability and Stock Rupture as close as possible to the real ones.","PeriodicalId":369368,"journal":{"name":"2021 Winter Simulation Conference (WSC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130907348","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
Using Longitudinal Health Records to Simulate the Impact of National Treatment Guidelines for Cardiovascular Disease 使用纵向健康记录模拟国家心血管疾病治疗指南的影响
2021 Winter Simulation Conference (WSC) Pub Date : 2021-12-12 DOI: 10.1109/WSC52266.2021.9715423
Daniel F. Otero-Leon, Weiyu Li, Mariel S. Lavieri, B. Denton, J. Sussman, R. Hayward
{"title":"Using Longitudinal Health Records to Simulate the Impact of National Treatment Guidelines for Cardiovascular Disease","authors":"Daniel F. Otero-Leon, Weiyu Li, Mariel S. Lavieri, B. Denton, J. Sussman, R. Hayward","doi":"10.1109/WSC52266.2021.9715423","DOIUrl":"https://doi.org/10.1109/WSC52266.2021.9715423","url":null,"abstract":"Continuous tracking of patient's health data through electronic health records (EHRs) has created an opportunity to predict healthcare policies' long-term impacts. Despite the advances in EHRs, data may be missing or sparsely collected. In this article, we use EHR data to develop a simulation model to test multiple treatment guidelines for cardiovascular disease (CVD) prevention. We use our model to estimate treatment benefits in terms of CVD risk reduction and treatment harms due to side effects, based on when and how much medication the patients are exposed to over time. Our methodology consists of using the EM algorithm to fit sparse health data and a discrete-time Monte-Carlo simulation model to test guidelines for different patient demographics. Our results suggest that, among published guidelines, those that focus on reducing CVD risk are able to reduce treatment without increasing the risk of severe health outcomes.","PeriodicalId":369368,"journal":{"name":"2021 Winter Simulation Conference (WSC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128888097","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
Specifying and Executing the Combination of Timed Finite State Automata and Causal-Block Diagrams by Mapping Onto Devs 指定和执行时间有限状态自动机和因果框图的组合映射到开发
2021 Winter Simulation Conference (WSC) Pub Date : 2021-12-12 DOI: 10.1109/WSC52266.2021.9715387
Randy Paredis, J. Denil, H. Vangheluwe
{"title":"Specifying and Executing the Combination of Timed Finite State Automata and Causal-Block Diagrams by Mapping Onto Devs","authors":"Randy Paredis, J. Denil, H. Vangheluwe","doi":"10.1109/WSC52266.2021.9715387","DOIUrl":"https://doi.org/10.1109/WSC52266.2021.9715387","url":null,"abstract":"Multi-Paradigm Modeling (MPM) advocates to explicitly model every part and aspect of a system, at the most appropriate level(s) of abstraction, using most appropriate formalism(s). We show, starting from a representative Personalized Rapid Transportation rail car example, how MPM naturally leads to the need to combine formalisms. To give these formalisms a precise semantics and to make them executable, we choose to map them all onto behaviorally equivalent (modulo some level of approximation in the case of continuous formalisms) Discrete EVent system Specification (DEVS) models. Our focus and main contribution is the principled combination TFSA>(CBD+StEL) of Timed Finite State Automata (TFSA) and Causal Block Diagrams (CBDs) using a State Event Location “glue” formalism StEL, and their mapping onto DEVS. The result of our principled workflow, explicitly modeled in a Formalism Transformation Graph + Process Model (FTG+PM) is an accurate and efficient simulator. This is demonstrated on the rail car case.","PeriodicalId":369368,"journal":{"name":"2021 Winter Simulation Conference (WSC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121892026","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: 1
Buiding a Digital Twin for Robot Workcell Prognostics And Health Management 构建机器人工作单元预测和健康管理的数字孪生体
2021 Winter Simulation Conference (WSC) Pub Date : 2021-12-12 DOI: 10.1109/WSC52266.2021.9715501
D. Kibira, Guodong Shao, B. Weiss
{"title":"Buiding a Digital Twin for Robot Workcell Prognostics And Health Management","authors":"D. Kibira, Guodong Shao, B. Weiss","doi":"10.1109/WSC52266.2021.9715501","DOIUrl":"https://doi.org/10.1109/WSC52266.2021.9715501","url":null,"abstract":"The application of robot workcells increases the efficiency and cost effectiveness of manufacturing systems. However, during operation, robots naturally degrade leading to performance deterioration. Monitoring, diagnostics, and prognostics (collectively known as prognostics and health management (PHM)) capabilities enable required maintenance actions to be performed in a timely manner. Noting the importance of data-based decisions in many current systems, effective PHM should be based on the analysis of data. The main challenges with robot PHM are the difficulties of relating data to healthy and unhealthy states, and lack of models to fuse and analyze up-to-date data to predict the future state of the robot. This paper describes concepts of digital twin development to overcome the above challenges. A use case of a digital twin modeling robot tool center point accuracy is provided. The proposed procedure for this digital twin will be applicable to different use cases such as reduced repeatability or increased power consumption.","PeriodicalId":369368,"journal":{"name":"2021 Winter Simulation Conference (WSC)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116315996","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: 1
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