Browsing by Author "Yan, SB"

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A cooperative framework for inter-organizational workflow system
(2003)
Yan, SB
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Wang, FH
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資訊工程學系
;
Department of Computer Science
Workflow management systems (WfMSs) are accepted worldwide due to their capability to model and control business processes. With WfMS, enterprises can improve work efficiency and react to the emergent situation quickly. However, most WfMSs adopt the centralized architecture in an organization so that they usually lack of a cooperative communication mechanism across different organizations. In this paper, we propose a cooperative framework for inter-organizational workflow systems. The framework consists of an inter-workflow meta-model, CA-PLAN (Cooperative Agentflow Process LANguage), and a prototype system based on Agentflow, a system developed in our laboratory. The cooperation mechanism between WfMSs in CA-PLAN is modeled as a Remote Call Process (RCP) paradigm. A Process Service is a mechanism that defines a process to participate in an inter-organizational process among different WfMSs and specifies the associated arguments in and out. A Remote Process is a proxy mechanism that refers to a process service on another WfMS. RCP provides the mechanism by which the process service and the remote process communicate and pass information back and forth and process monitor mechanism. The mechanism, also allowing dynamic changes and reconfiguration, can adapt dynamic and competitive business environment. Through RCP, the cooperative process across organizations becomes simple, faster, and flexible.
An object-oriented model for protocol design
(1998)
Yan, SB
;
Wang, FJ
;
資訊工程學系
;
Department of Computer Science
Asynchronous Transfer Mode (ATM) has been selected as the core technology in high speed networks. This paper presents an object-oriented model OOATM for the development of ATM protocols. The model consists of four kinds of entities: (I) interface entities provide service primitives to upper layer and generate the corresponding protocol data unit (PDU), (2) connection entities manipulate communication services, (3) state entities deal with state transitions and the corresponding services, and (4) message entities describe the format and contents of the Protocol Data Unit(PDU) in a protocol. We have constructed a class library for these entities and the paper presents an approach to construct an ATM protocol with the library. An example of constructing a Signalling protocol shows that this approach provides a high level modeling, and reusability.
Intention scheduling for BDI agent systems
(2005-01-01)
Yan, SB
;
Lin, ZN
;
Hsu, HJ
;
Wang, FJ
;
資訊工程學系
BDI is one of the models in Agent Systems. Currently, most of BDI agents' researches are focused on,the ability for agents to dynamically select plans to achieve a goal. There are fewer discussions on Intention Scheduling, the order in which the selected plans are executed. Agents must adapt to dynamical and unpredictable changes. Without a proper scheduling scheme, an agent may repeat unnecessary works, waste valuable resource or even fail the users' expect altogether. In this paper, we present an effective intention-scheduling scheme in BDI reasoning process.