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面向产业链协同SaaS平台的事件协同感知技术研究 总被引:1,自引:1,他引:0
为了解决业务关联的产业链协同SaaS平台不同企业对象间基于事件的动态协同感知问题,建立了基于业务事件的平台协同对象感知模型,提出了基于AOP技术的业务事件动态捕获机制、业务关联的协同对象列表产生器实现算法和基于GSM信号增强技术的事件消息发布方法。该模型和算法已在汽车零部件产业链协同SaaS平台上进行了应用,能满足汽车售后服务等复杂业务过程中跨单核企业联盟的业务协同需求。 相似文献
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一种有盟主的服务虚拟组织模型及其在电子政务中的应用 总被引:1,自引:0,他引:1
提出了一种有盟主的服务虚拟组织模型(SHALOM),旨在服务网格环境下针对盟主的目标需求,解决盟主如何动态组织自主的合作伙伴的服务和流程资源构建虚拟组织协同进行求解的问题.在该模型的支撑下,盟主在业务层定义目标需求和分解任务,通过虚拟组织需求和成员提供的服务之间的匹配,动态选取相关合作伙伴的服务和流程资源.盟主在虚拟组织中的流程和服务资源之间定义协作关系,并采用聚合机制即时生成可运行的虚拟组织.文中重点讨论了SHALOM模型的核心元素和运作原理,并相应地介绍了支撑框架和相关技术,最后结合实际低成本电子政务应用展示了模型的效果. 相似文献
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为实现机场管理信息系统(AMIS)中各业务子系统之间互操作和无缝连接,基于JMS规范的消息系统首先需要解决的就是消息可靠性问题,在针对JMS规范的两种消息传递模型,结合机场消息中事件固有的先后顺序关系,提出了一种更高效更适合机场业务的保障消息可靠性的方法,并给予了实现。 相似文献
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一种基于动态进化模型的事件探测和追踪算法 总被引:16,自引:2,他引:16
在大量分析网络新闻特点的基础上,借鉴Single-Pass聚类思想,并结合新闻要素给出了一种基于动态进化模型的事件探测和追踪算法.该动态模型是基于新闻事件的生存特点提出的,包括:基于时间距离的相似度计算模型、事件模板进化策略以及动态阈值设置思想.该算法可以自动对新闻资料进行组织生成新闻专题,进而为用户提供个性化服务.实验结果验证了算法的有效性. 相似文献
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基于发布/订阅系统的事件服务体系结构 总被引:3,自引:0,他引:3
网格环境下软硬设施的异构性、通信的异步性以及协同工作的特点使得基于事件的交互成为虚拟组织成员交互的自然抽象。适用于网格环境下的事件服务是发布/订阅系统。该文结合科学数据网格的特点,采用基于内容的发布/订阅系统实现事件服务。并且提出科学数据网格的事件服务体系结构,给出了系统框架及实现中的核心算法———路由算法和匹配算法。该方案已经应用于科学数据网格项目中,结果表明它能够很好地适用于数据网格环境中。 相似文献
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基于内容的发布订阅系统多数采用泛洪和匹配优先的路由算法。本文提出了基于事件空间划分的发布订阅系统的实现方法,采用组播的方式实现了目标代理到多个订阅者之间的通知路由算法。与采用贪婪路由思想的单播路由算法相比较,该算法提高了在通知路由阶段的发布订阅系统的路由效率。算法对解决基于内容的发布订阅系统中相关的路由问题具有重要的作用和意义。最后给出了算法的仿真实验。 相似文献
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结合面向联盟定制的产业链协同平台的实际需求,提出基于构件组装的软件即服务(SaaS)平台体系结构,对平台数据特点进行分析,给出基于业务数据库模板的分联盟数据管理方案,研究联盟定制过程中与业务功能关联的数据库动态生成算法,以及在联盟使用过程中基于用户身份的业务数据库动态连接技术。汽车产业链协同SaaS平台上的应用实例证明了该演化技术的有效性。 相似文献
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Adaptive Service Composition in Flexible Processes 总被引:4,自引:0,他引:4
Ardagna D. Pernici B. 《IEEE transactions on pattern analysis and machine intelligence》2007,33(6):369-384
In advanced service oriented systems, complex applications, described as abstract business processes, can be executed by invoking a number of available Web services. End users can specify different preferences and constraints and service selection can be performed dynamically identifying the best set of services available at runtime. In this paper, we introduce a new modeling approach to the Web service selection problem that is particularly effective for large processes and when QoS constraints are severe. In the model, the Web service selection problem is formalized as a mixed integer linear programming problem, loops peeling is adopted in the optimization, and constraints posed by stateful Web services are considered. Moreover, negotiation techniques are exploited to identify a feasible solution of the problem, if one does not exist. Experimental results compare our method with other solutions proposed in the literature and demonstrate the effectiveness of our approach toward the identification of an optimal solution to the QoS constrained Web service selection problem 相似文献
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动态构造虚拟公共网络服务的一个多agent协商模型 总被引:1,自引:0,他引:1
该文通过对IP网络管理中多个移动agent动态构造虚拟公共网络VPN的研究,采用基于QoS服务的多属性的动态协商定价模型,在多agent之间形成了利益最大化的服务协议,以此应用实例表明移动agent是解决异构、分布、自治环境的复杂IP网管的有效软件体系结构。 相似文献
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从服务的业务逻辑出发,在分析现有服务描述模式的基础上,定义了面向业务应用的服务描述模型,并在OWL-S的基础上,提出了业务级的服务与用户需求描述语言EXOWL-S/R作为服务提供者和用户进行业务级交互的基础;同时在构建领域业务应用本体的基础上,提出了根据服务的业务逻辑描述半自动地获取服务业务级语义的标注方法,最终为帮助用户全面地、无二义地理解服务的业务能力提供一种有效的解决方案。 相似文献
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A virtual enterprise is an emerging business cooperation model which allows rapid response to the unpredictable market behavior and opportunity. For service oriented enterprises, where computing resources are encapsulated as services and published online, establishing a virtual enterprise can be regarded as a process of service composition. As there are increasing numbers of available services providing similar functionalities but with different quality values, and with potential business correlations among them, it is not trivial to orchestrate a composite service with optimal overall quality of service (QoS). In this paper, we formally propose a business correlation model including both quality correlations and selection correlations, and then present an efficient approach for correlation-driven QoS-aware optimal service selection based on a genetic algorithm. The genetic algorithm is tailored with niching technology, a repair operator and a penalty mechanism. The effectiveness and efficiency of the approach are demonstrated via empirical studies at last. 相似文献
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Qing Li Author Vitae Jian Zhou Author Vitae Author Vitae Can-Qiang Li Author Vitae Author Vitae Jing Wu Author Vitae Author Vitae 《Computers in Industry》2010,61(2):127-144
Supply chains, dynamic alliances, e-business, extended enterprises, and virtual organizations are typical networked enterprises which are formed based on partner companies’ core competencies. Different partners have different infrastructures; the interoperability among heterogeneous systems is the solid foundation for the networked enterprise to work seamlessly and effectively. Due to the distributed and heterogeneous characteristics of different partner companies, it is a big challenge to implement a satisfying and cost effective solution in the networked enterprise.Aiming at the problems of system integration and cross-system interoperability, Service-Oriented Architecture (SOA) provides a new integration pattern and relative system infrastructure. The key for the development and implementation of SOA is services encapsulation and orchestration of applications through certain mechanism to operate a complex business. However, cross infrastructures services access protection and relative services orchestration are still the bottleneck for the SOA implementation.This paper develops a business processes oriented heterogeneous systems integration platform with relative methodology for networked enterprises integration. The platform is a space distributed and management centralized platform for networked enterprises. The service access agent (SAA) mechanism is developed to realize cross-domains identity authentication, service authorization, and information transmission security. Every Web service or SAA in the platform has a unique ID. The interoperating process only relies on IDs, which endows the platform with a loose coupling feature. Aiming at service orchestration, a graphic service process modelling method is developed, with which the developed process model can link atom Web services and form a complex service. The Java based service orchestration tool provides an ESB (Enterprise Service Bus) independent service orchestration and deployment. Those services that are results of orchestration can be orchestrated as an atom service in another orchestrating process. Thus, the platform can support orchestration decomposition. The structure approach of the business process modelling based platform implementation is developed, which provides a guideline for platform installation, services modelling, service encapsulation, service orchestration, and service deployment. Two cases are provided to illustrate the usage of the platform in industries. The development of this platform is an open source project. 相似文献
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服务网格中的业务端即时应用集成技术研究 总被引:8,自引:1,他引:8
研究了服务网格环境中快速构造集成化应用的问题,提出了一个新的业务端即时应用集成方法,旨在为业务人员提供快速整合资源、配置集成化应用的平台,以降低成本、提高效率,提出了包含语义服务描述与注册、业务服务社区、业务端编程以及聚合构件和服务组合引擎的框架结构,并阐述了各个部分的作用,文章最后对比分析了基于此技术构造业务应用中的优势,并以奥运综合信息服务系统FKANE2008为案例,展示了该技术的应用效果。 相似文献