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TTMS: A Task Tree Based Workflow Management System

机译：TTMS：基于任务树的工作流管理系统

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In this paper, an approach to use task trees in a workflow manage ment system (WfMS) is presented. As hierarchical models task trees capture several hierarchy levels of a workflow in one model. A workflow editor visual izes the models also as flowcharts similar to UML activity diagrams. The WfMS use these models as input and instantiates and executes them. The sys tem is web-based and can be easily accessed by users with any browser clients. This paper motivates the approach to use task trees that produce hierarchical and structured workflow specifications. The proposed language might help end users to better understand workflow models with its problem oriented hierarchi cal modeling character. Temporal operators from the task models are compared with certain operators from established workflow languages. In addition, in TTMS an instantiation time concept is implemented, where decision operators are evaluated at the very moment the process is instantiated. Consequently the task tree modeling language is enhanced for modeling decisions in the context of workflow management.
机译：本文提出了一种在工作流管理系统（WfMS）中使用任务树的方法。作为分层模型，任务树在一个模型中捕获了工作流的多个分层级别。工作流编辑器还将模型可视化为类似于UML活动图的流程图。 WfMS使用这些模型作为输入并实例化并执行它们。该系统基于Web，用户可以通过任何浏览器客户端轻松访问。本文激发了使用产生分层和结构化工作流规范的任务树的方法。所提出的语言可能会以面向问题的层次建模特性帮助最终用户更好地理解工作流模型。将任务模型中的时间运算符与已建立的工作流语言中的某些运算符进行比较。此外，在TTMS中实现了实例化时间概念，在实例化过程的那一刻就对决策运算符进行评估。因此，增强了任务树建模语言，可以在工作流管理的上下文中对决策进行建模。

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