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An Agent Based Approach to Patient Scheduling Using Experience Based Learning 基于经验学习的基于Agent的患者调度方法
Pub Date : 2010-10-01 DOI: 10.4018/jats.2010100101
E. G. Kanaga, M. Valarmathi, Juliet A Murali
This paper describes an agent based approach to patient scheduling using experience based learning and an integer programming model. The evaluation on different learning techniques shows that the experience based learning EBL provides a better solution. The time required to process a particular job is reduced as the experience processed by it increases. The processing time can be calculated with the help of EBL. The main objective of this patient scheduling system is to reduce the waiting time of patient in hospitals and to complete their treatment in minimum required time. The proposed framework is implemented in JADE. In this approach the patients are represented as patient agent PA and resources as resource agent RA. This mathematical model provides an optimal solution. The comparisons of the proposed framework with other scheduling rules shows that an agent based approach to patient scheduling using EBL gives better results.
利用基于经验的学习和整数规划模型,提出了一种基于智能体的患者调度方法。对不同学习方法的评价表明,基于经验的学习方法提供了更好的解决方案。处理特定作业所需的时间随着它所处理的经验的增加而减少。利用EBL可以计算出加工时间。该患者调度系统的主要目标是减少患者在医院的等待时间,并在最短的时间内完成治疗。提出的框架在JADE中实现。在这种方法中,患者被表示为患者代理PA,资源被表示为资源代理RA。这个数学模型提供了一个最优解。与其他调度规则的比较表明,基于agent的EBL患者调度方法具有较好的效果。
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引用次数: 10
Agent-Based Modelling of Socio-Ecosystems: A Methodology for the Analysis of Adaptation to Climate Change 基于主体的社会生态系统建模:气候变化适应分析的一种方法
Pub Date : 2010-10-01 DOI: 10.4018/jats.2010100103
S. Balbi, C. Giupponi
The integrated-environmental, economic and social-analysis of climate change calls for a paradigm shift as it is fundamentally a problem of complex, bottom-up and multi-agent human behaviour. There is a growing awareness that global environmental change dynamics and the related socio-economic implications involve a degree of complexity that requires an innovative modelling of combined social and ecological systems. Climate change policy can no longer be addressed separately from a broader context of adaptation and sustainability strategies. Past research on artificial intelligence and social simulation has developed a promising methodology. Literature on agent-based modelling ABM shows it's potential to couple social and environmental models and incorporate the influence of micro-level decision making in the system dynamics and to study the emergence of collective responses to policies. However, there are few studies that concretely apply this methodology to the study of climate change related issues. The analysis in this paper supports the idea that today ABM is a consolidated interdisciplinary approach for the bottom-up exploration of climate policies, especially because it can take into account adaptive behaviour and heterogeneity of the system's components.
对气候变化的综合环境、经济和社会分析要求范式转变,因为它从根本上是一个复杂的、自下而上的、多主体的人类行为问题。人们日益认识到,全球环境变化的动态和有关的社会经济影响涉及一定程度的复杂性,需要对社会和生态系统的结合建立创新的模型。气候变化政策不能再脱离适应和可持续性战略的更广泛背景单独处理。过去对人工智能和社会模拟的研究已经发展出一种很有前途的方法。基于主体的建模ABM的文献表明,它有潜力将社会和环境模型结合起来,将微观层面决策的影响纳入系统动力学,并研究集体对政策的反应的出现。然而,很少有研究将这种方法具体应用于气候变化相关问题的研究。本文的分析支持了这样一种观点,即今天的ABM是一种综合的跨学科方法,用于自下而上地探索气候政策,特别是因为它可以考虑到系统组成部分的适应性行为和异质性。
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引用次数: 43
Automated Fuzzy Bidding Strategy for Continuous Double Auctions Using Trading Agent's Attitude and Market Competition 基于交易代理态度和市场竞争的连续双标自动模糊竞价策略
Pub Date : 2010-10-01 DOI: 10.4018/jats.2010100105
M. Goyal, Saroj Kaushik, Preetinder Kaur
This paper designs a novel fuzzy competition and attitude based bidding strategy FCA-Bid for continuous double auction in which the best transaction price is calculated on account of the attitude of the agents and the competition for the goods in the market. The estimation of attitude is based on the bidding item's attribute assessment, which adapts the fuzzy sets technique to handle uncertainty of the bidding process. Additionally, it uses heuristic rules to determine the attitude of bidding agents. The bidding strategy also uses and determines competition in the market based on the two factors, number of the bidders participating and the total time elapsed for an auction using Mamdani's Direct Method. Then the range for the trading price will be determined based on the assessed attitude and the competition in the market using the fuzzy reasoning technique. The final transaction price is calculated after considering the conflicting attitudes of the seller and the bidder toward selecting the transaction price.
本文设计了一种新的基于模糊竞争和态度的连续双拍卖竞价策略FCA-Bid,该策略考虑代理的态度和市场对商品的竞争,计算出最优交易价格。态度的估计是基于投标项目的属性评估,采用模糊集技术处理投标过程的不确定性。此外,它还使用启发式规则来确定投标代理的态度。投标策略还基于两个因素,即参与投标的投标人数量和使用Mamdani直接法拍卖的总时间,来使用和确定市场竞争。然后根据评估态度和市场竞争情况,运用模糊推理技术确定交易价格的区间。最终的交易价格是在考虑卖方和投标人对交易价格选择的冲突态度后计算出来的。
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引用次数: 6
A Framework for Deployment of 3g Wireless Network and Mobile Agent in Health Care Delivery System 3g无线网络和移动代理在医疗服务系统中的部署框架
Pub Date : 2010-10-01 DOI: 10.4018/jats.2010100102
O. Ojesanmi, S. O. Ojesanmi, B. Akinnuwesi, M. Odim
The extent of the AIDS crisis is becoming clear in many African countries, as increasing numbers of people with HIV are becoming ill. The technology of mobile phones has brought ubiquitous access to information coupled with software agents and health care delivery systems in hospitals. It enables patient-physician contact to be more frequent. Such an environment can provide personalized monitoring services to patients and decision support to physicians, as well as maintenance for cost control. This paper proposes the deployment of 3G wireless technology with mobile agents for health care delivery to HIV/AIDS patients. Patient, nurse and physician are the agents in the proposed system. Each agent uses a mobile phone to communicate with the server anywhere at any time without restrictions. The system employs the mobility, flexibility and autonomous characteristics of mobile agents to monitor patients. The system has the ability to provide fast and reliable assistance to the patients.
随着越来越多的艾滋病毒感染者患病,艾滋病危机在许多非洲国家的严重程度正变得越来越明显。移动电话技术带来了无处不在的信息访问,加上软件代理和医院的医疗保健提供系统。它使医患之间的接触更加频繁。这样的环境可以为患者提供个性化的监测服务,为医生提供决策支持,并为成本控制提供维护。本文提出了3G无线技术与移动代理的部署,为艾滋病毒/艾滋病患者提供卫生保健服务。病人、护士和医生是拟议系统中的代理人。每个代理使用移动电话与服务器进行通信,不受任何时间、任何地点的限制。该系统利用移动代理的移动性、灵活性和自主性等特点对患者进行监测。该系统能够为患者提供快速可靠的帮助。
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引用次数: 5
Simulating Cooperative Behaviors in Dynamic Networks 动态网络中的合作行为模拟
Pub Date : 2010-07-01 DOI: 10.4018/jats.2010070104
Yu Zhang, Jason Leezer, K. Wong
Agent-based social simulation uses agent systems to study social behaviors and phenomena. A difficulty in producing social simulations lies in the problem of modeling the emergence of social norms. Although empirical evidence has provided insight into how human relationships are organized, the way in which those relationships are used to produce cooperative behavior where each agent only seeks to maximize its own utility is not well defined. This paper proposes a new rule called the Highest Rewarding Neighborhood HRN for social interactions. The HRN rule allows agents to remain selfish and be able to break relationships in order to maximize their utility. Our experiment shows that when agents are able to break unrewarding relationships that a Pareto-optimum strategy arises as the social norm. In addition, the authors conclude the rate and amount of Pareto-optimum strategy that arises is dependent on the network structure when the networks are dynamic, and the rate is independent of the network structure when the networks are static.
基于智能体的社会模拟利用智能体系统研究社会行为和现象。制作社会模拟的一个困难在于如何对社会规范的出现进行建模。尽管经验证据提供了对人类关系如何组织的洞察,但这些关系如何用于产生合作行为的方式并没有很好地定义,在这种合作行为中,每个主体只寻求最大化自己的效用。本文提出了一个新的规则,称为最高奖励邻里HRN的社会互动。HRN规则允许代理人保持自私,并能够为了最大化他们的效用而打破关系。我们的实验表明,当代理人能够打破无回报的关系时,帕累托最优策略就会成为社会规范。此外,作者还得出了当网络是动态的时候,帕累托最优策略的产生率和数量依赖于网络结构,而当网络是静态的时候,帕累托最优策略的产生率与网络结构无关。
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引用次数: 9
Agent-Directed Tracing of Multi-Scale Drug Disposition Events within Normal and Diseased In Silico Livers 多尺度药物处置事件在正常和患病硅肝中的代理定向追踪
Pub Date : 2010-07-01 DOI: 10.4018/jats.2010070101
Sean H. J. Kim, Sunwoo Park, Glen E. P. Ropella, C. Hunt
Cirrhosis, a chronic liver disease, alters hepatic drug disposition; however, little is known about micro-mechanisms underpinning disease progression and how they contribute to changes in liver disposition properties. In this article, the authors present multilevel, agent-based and agent-directed In Silico Livers ISLs to probe plausible micro-mechanistic details for a cationic drug, diltiazem, in two different types of cirrhotic rat livers. Starting with ISLs that validated against diltiazem disposition data from normal livers, the authors systematically transformed ISL characteristics to achieve validation against perfusion outflow profiles from the two types of diseased livers. In this regard, the authors developed and implemented multilevel methods to trace each object representing diltiazem during simulated perfusion experiments. This enabled gaining heretofore-unavailable insight into plausible micro-mechanistic details from diltiazem's perspective in normal and diseased livers. The authors posit that the presented ISL micro-mechanistic details may have disease caused counterparts during disposition.
肝硬化是一种慢性肝病,会改变肝脏的药物配置;然而,关于疾病进展的微观机制以及它们如何影响肝脏处置特性的变化,我们知之甚少。在这篇文章中,作者提出了多层次、基于药物和靶向药物的硅肝isl,以探索阳离子药物地尔硫卓在两种不同类型的肝硬化大鼠肝脏中的微观机制细节。从对正常肝脏的地尔硫卓配置数据进行验证的ISL开始,作者系统地转换了ISL特征,以实现对两种病变肝脏灌注流出谱的验证。在这方面,作者开发并实施了多层次的方法来追踪在模拟灌注实验中代表地尔硫卓的每个对象。这使得从地尔硫卓在正常和患病肝脏中的作用角度获得了迄今为止无法获得的关于合理的微观机制细节的见解。作者认为,所提出的ISL微观机制细节可能在处置过程中有疾病引起的对应。
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引用次数: 11
Simulating the Diffusion of Information: An Agent-Based Modeling Approach 模拟信息扩散:一种基于agent的建模方法
Pub Date : 2010-07-01 DOI: 10.4018/jats.2010070103
Cindy Hui, M. Goldberg, M. Magdon-Ismail, W. Wallace
Diffusion occurs in various contexts and generally involves a network of entities and interactions between entities. Through these interactions, some property, e.g., information, ideas, etc., is spread through the network. This paper presents a general model of diffusion in dynamic networks. The authors simulate the diffusion of evacuation warnings in multiple network structures under various model settings and observe the proportion of evacuated nodes. The network dynamics occur as the result of the diffusion where nodes may leave the network after receiving the warning. The authors use the model to explore how the network structure, seeding strategy, network trust, and trust distribution affect the diffusion process. The effectiveness of the diffusion is a function of the network structure and seeding strategy used in delivering the initial broadcast. The simulation results reveal interesting observations on the effects of network trust and distribution of trust in the network.
扩散发生在各种情况下,通常涉及实体网络和实体之间的相互作用。通过这些相互作用,一些属性,如信息、思想等,通过网络传播。本文提出了动态网络中扩散的一般模型。在不同的模型设置下,模拟疏散预警在多个网络结构中的扩散,观察疏散节点的比例。网络动态是扩散的结果,节点可能在收到警告后离开网络。利用该模型探讨了网络结构、播种策略、网络信任和信任分布对扩散过程的影响。扩散的有效性是网络结构和播送初始广播时使用的播送策略的函数。仿真结果揭示了网络信任的影响和信任在网络中的分布。
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引用次数: 50
SPARK: a framework for multi-scale agent-based biomedical modeling SPARK:一个基于多尺度主体的生物医学建模框架
Pub Date : 2010-04-11 DOI: 10.1145/1878537.1878541
A. Solovyev, Maxim Mikheev, Leming Zhou, Joyeeta Dutta-Moscato, C. Ziraldo, G. An, Y. Vodovotz, Qi Mi
Multi-scale modeling of complex biological systems remains a central challenge in the systems biology community. A method of dynamic knowledge representation known as agent-based modeling enables the study of higher level behavior emerging from discrete events performed by individual components. In this work, we describe SPARK (Simple Platform for Agent-based Representation of Knowledge), a framework for agent-based modeling specifically designed for systems-level biomedical model development. SPARK is a standalone application written in Java. It provides a user-friendly interface, and a simple programming language for developing Agent-Based Models (ABMs). SPARK has the following features specialized for modeling biomedical systems: 1) continuous space that can simulate real physical space; 2) flexible agent size and shape that can represent the relative proportions of various cell types; 3) multiple spaces that can concurrently simulate and visualize multiple scales in biomedical models; 4) a convenient graphical user interface. Existing ABMs of diabetic foot ulcers and acute inflammation were implemented in SPARK. Models of identical complexity were run in both NetLogo and SPARK; the SPARK-based models ran two to three times faster. We are currently utilizing SPARK to develop multi-scale inflammation models in diverse settings such as cancer, viral infection, and spinal cord injury.
复杂生物系统的多尺度建模仍然是系统生物学领域的核心挑战。一种称为基于代理的建模的动态知识表示方法可以研究由单个组件执行的离散事件产生的更高级别的行为。在这项工作中,我们描述了SPARK(基于代理的知识表示简单平台),这是一个专门为系统级生物医学模型开发设计的基于代理的建模框架。SPARK是一个用Java编写的独立应用程序。它为开发基于代理的模型(ABMs)提供了一个用户友好的界面和一种简单的编程语言。SPARK具有以下特征:1)连续空间,可以模拟真实的物理空间;2)柔性剂的大小和形状,可以代表各种细胞类型的相对比例;3)生物医学模型中可以同时模拟和可视化多个尺度的多个空间;4)方便的图形用户界面。现有糖尿病足溃疡和急性炎症的ABMs在SPARK中实施。在NetLogo和SPARK中运行相同复杂度的模型;基于spark的模型运行速度要快两到三倍。目前,我们正在利用SPARK开发不同环境下的多尺度炎症模型,如癌症、病毒感染和脊髓损伤。
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引用次数: 47
Simulation of pedestrian behavior in intermodal facilities 多式联运设施中行人行为模拟
Pub Date : 2010-04-11 DOI: 10.1145/1878537.1878556
J. Usher, E. Kolstad, Xuan Liu
Planning pedestrian environments requires that designers understand how pedestrians interact with their environment and one another. With improved knowledge, the design and planning of pedestrian areas can provide improvements in safety, throughput, and utility. This paper provides an overview of the Intermodal Simulator for the Analysis of Pedestrian Traffic (ISAPT). It focuses on the methodology and approaches used in simulation of the pedestrian traffic, including route planning and navigation.
规划行人环境要求设计师了解行人与环境以及彼此之间的相互作用。随着知识的提高,步行区的设计和规划可以提高安全性、吞吐量和实用性。本文介绍了用于行人交通分析的多式联运模拟器(ISAPT)的概况。它侧重于行人交通仿真的方法论和方法,包括路线规划和导航。
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引用次数: 16
A Multi-Agent Taxi Dispatching System 多智能体出租车调度系统
Pub Date : 2010-04-01 DOI: 10.4018/jats.2010040101
M. Hasheminezhad, A. Bahreininejad
The taxi assignment problem may be categorized as a vehicle routing problem. ?When placed in the field of resource allocation, it is a dynamic problem in which ?the situation changes as the work progresses. This paper presents a new agent-based approach to tackle the taxi assignment problem. New parameters are ?introduced to increase the satisfaction of the drivers. The authors propose a new algorithm to improve the parameters. Simulations were also conducted to examine the efficiency of the proposed method. The results indicate the effectiveness of the proposed taxi assignment/dispatching approach.
出租车分配问题可归类为车辆路线问题。当置于资源分配领域时,它是一个动态问题,随着工作的进行,情况会发生变化。提出了一种新的基于智能体的出租车分配方法。引入了新的参数以提高驾驶员的满意度。作者提出了一种改进参数的新算法。通过仿真验证了所提方法的有效性。结果表明了所提出的出租车分配/调度方法的有效性。
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引用次数: 4
期刊
International journal of agent technologies and systems
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