共查询到18条相似文献,搜索用时 140 毫秒
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基于Pi演算和EECA规则的跨组织工作流建模研究 总被引:1,自引:0,他引:1
针对跨组织环境下的工作流形式化建模技术的不足问题,提出了一种基于Pi演算和EECA(Extended-ECA)规则的跨组织工作流建模方法.将ECA规则在时间上进行扩展,解决了ECA规则在描述与时间相关的复杂过程时能力不足问题.利用Pi演算技术,对跨组织的本地工作流的协同方式进行了形式化描述.分析了协同模型及其执行过程,并给出了一个应用实例验证了提出的模型具有较好的柔性,可以有效用于本地工作流间的协同工作,并且适合于对分布式协同环境下的工作流进行建模. 相似文献
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组织间协同的信息流以及每个参与组织的自治性是跨组织协同的两个要素。结合跨组织工作流建模与对象网之间的相似性,提出了一种基于公共视图和对象Petri网的跨组织工作流建模方法。组织的公共视图隐藏了内部流程细节,是原流程中仅与合作伙伴相关的活动在外部的投影。通过组合各参与组织的公共视图得到了跨组织协同的信息流网结构,利用对象网的交互集建立了组织内部流程与通信结构的同步关系。通过一个建模实例阐述了该方法的有效性。 相似文献
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为了更有效地保证跨组织业务流程模型的正确性和合理性,应用Pi演算提出了一种基于状态的角色行为的验证方法。基于Pi演算提出了跨组织业务协作中的角色模型,设计了角色描述表,以清晰、直观地描述角色的权利、职责和义务,进而应用Pi演算验证工具MWB(移动工作平台)的check和step命令提出了单角色验证方法,并在此基础上从业务对象状态和业务操作角度提出了多角色验证方法。实现了角色行为的验证,并为跨组织业务流程的可达性、一致性和死锁等分析奠定基础。 相似文献
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π演算是一种移动进程代数,可用于对并发和动态变化的系统进行建模.根据π演算的语法,利用π演算对多实例工作流模式进行了建模.提出的方法具有较强的语义表达能力,同时使过程模型的语义更加精确. 相似文献
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为了实现工作流管理功能,必须将业务过程从现实世界中抽象出来,并用一种形式化方法对其进行描述.工作流模式是工作流建模的基本构造单元.π演算是一种移动进程代数,可用于对并发和动态变化的系统进行建模.首先提出以π演算作为工作流形式化的基础,然后利用π演算对工作流模式进行详细的描述. 相似文献
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工作流模式的π演算建模研究 总被引:1,自引:0,他引:1
π演算是一种移动进程代数,可用于对并发和动态变化的系统进行建模。根据π演算的语法,提出了一种新的用于工作流模式的形式化建模方法,以π演算作为工作流形式化的基础,并利用π演算对工作流模式进行了建模。 相似文献
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In recent years, workflow management systems have become an accepted technology to support automation in process-centric environments. Lately, organizations concentrate more and more on their core business processes while outsourcing supporting processes to other organizations, thereby forming virtual enterprises. The organizations forming the virtual enterprise operate in a B2B e-commerce setting in which provider organizations perform e-services for consumer organizations. To apply workflow management technology in these virtual enterprises, current workflow management systems need to be extended to offer support for cross-organizational processes. Transaction support, already considered an important issue in intra-organizational workflow management systems, must be extended to deal with the cross-organizational aspects as well. This paper presents a high-level, compensation based transaction model and a flexible architecture to support thistransaction model, as required by cross-organizational workflow processes. Characteristic of the model is the flexibility in rollback semantics by combining rollback modes and rollback scopes. This is supported by a dynamically composed architecture that is configured using the agreements that are specified in an electronic contract that has been established between the participating organizations. The transaction model supported by the dynamically composed architecture is implemented in a prototype system, based on commercial workflow management technology. 相似文献
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Web服务组合研究领域的一个重要的问题是如何形式化描述Web服务组合,如何验证服务组合的正确性。Web服务组合的形式化模型来可以用来检查、验证Web服务组合以保证组合的正确性。Pi-演算是一种适合于Web服务组合建模的进程代数。本文介绍了P-演算的基本语法,针对目前最主要的一种描述和执行基于工作流模式的Web服务组合的规范-Web服务商业流程执行语言(Business Process Execution Language for Web Services,BPEL4WS),定义了Pi-演算和BPEL4WS之间的概念映射,并给出了BPEL4WS的基于P-演算的形式化模型,最后通过一个案例给出了模型验证的方法。 相似文献
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蔡丽丽 《计算机工程与应用》2014,(3):30-35,102
工作流在实际应用中经常涉及到不同系统间的业务流程协作问题,以及由于业务突发变动而产生的动态适应问题。为了解决这两者问题,提出了一种结合跨组织和柔性工作流技术的工作流引擎设计方案。对已有的跨组织工作流技术和柔性工作流技术的相关研究成果进行了分析总结,在此基础上进一步设计了一种工作流模型,该模型既支持跨业务系统交互,同时也支持业务内部的流程动态变更。结合实际场景分析来阐述该模型的跨组织业务处理和业务动态变更机制的功能设计。以流程回退为例介绍该模型的原型实现。 相似文献
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为了加强工作流模型对业务流程的描述能力,提出了一种扩展有向图工作流模型及其验证方法.针对基于有向图工作流模型的不足,提出了扩展有向图工作流模型,并给出了该模型的定义和图形符号描述.在用Pi-演算准确描述扩展有向图工作流模型的基础上,给出了用Pi-演算分析和验证扩展有向图工作流模型正确性的方法.最后,结合实验对扩展有向图工作流模型及验证方法进行了仔细分析,实验结果表明了该工作流模型及验证方法的有效性和正确性. 相似文献
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Shung-Bin Yan Feng-Jian Wang Department of Computer Science Information Engineering National Chiao Tung University Taiwan 《国际自动化与计算杂志》2005,2(2):195-207
Workflow management systems (WfMSs) are accepted worldwide due to their ability to model and control business processes. Previously, we defined an intra-organizational workflow specification model, Process LANguage (PLAN). PLAN, with associated tools, allowed a user to describe a graph specification for processes, artifacts, and participants in an organization. PLAN has been successfully implemented in Agentflow to support workflow (Agentflow) applications. PLAN, and most current WfMSs are designed to adopt a centralized architecture so that they can be applied to a single organization. However, in such a structure, participants in Agentflow applications in different organizations cannot serve each other with workflows. In this paper, a service-oriented cooperative workflow model, Cooperative Agentflow Process LANguage (CA-PLAN) is presented. CA-PLAN proposes a workflow component model to model inter-organizational processes. In CA-PLAN, an inter-organizational process is partitioned into several intra-organizational processes. Each workflow system inside an organization is modeled as an Integrated Workflow Component (IWC). Each IWC contains a process service interface, specifying process services provided by an organization, in conjunction with a remote process interface specifying what remote processes are used to refer to remote process services provided by other organizations, and intra-organizational processes. An IWC is a workflow node and participant. An inter-organizational process is made up of connections among these process services and remote processes with respect to different IWCs. In this paper, the related service techniques and supporting tools provided in Agentflow systems are presented. 相似文献