Managing process and service fusion in virtual enterprises

Georgakopoulos, Dimitrios; Schuster, H.; Chichocki, Andrzej; Baker, Donald G.

doi:10.1016/s0306-4379(99)00026-5

“…Consequently, approaches where the development of composite services requires the identification at design-time of the exact services to be composed are inappropriate. The runtime selection of component services during the execution of a composite service has been put forward as an approach to address this issue [2,6,11]. The idea is that component services are selected by the composite service execution engine based on a set of criteria.…”

Section: Web Services Technologies Are Emerging As a Powerful Vehiclementioning

confidence: 99%

Quality driven web services composition

Zeng

¹

,

Benatallah

²

,

Dumas

³

et al. 2003

Proceedings of the Twelfth International Conference on World Wide Web - WWW '03

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The process-driven composition of Web services is emerging as a promising approach to integrate business applications within and across organizational boundaries. In this approach, individual Web services are federated into composite Web services whose business logic is expressed as a process model. The tasks of this process model are essentially invocations to functionalities offered by the underlying component services. Usually, several component services are able to execute a given task, although with different levels of pricing and quality. In this paper, we advocate that the selection of component services should be carried out during the execution of a composite service, rather than at design-time. In addition, this selection should consider multiple criteria (e.g., price, duration, reliability), and it should take into account global constraints and preferences set by the user (e.g., budget constraints). Accordingly, the paper proposes a global planning approach to optimally select component services during the execution of a composite service. Service selection is formulated as an optimization problem which can be solved using efficient linear programming methods. Experimental results show that this global planning approach outperforms approaches in which the component services are selected individually for each task in a composite service.

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“…As mentioned before, in existing approaches, the selection of component service to execute a task is determined independently to other tasks of composite services [2,11,6]. More precisely, in our previous work [2], service selection is done at each service community locally.…”

Section: Global Service Selectionmentioning

confidence: 99%

Quality driven web services composition

Zeng¹,

Benatallah²,

Dumas³

et al. 2003

Proceedings of the Twelfth International Conference on World Wide Web - WWW '03

View full text Add to dashboard Cite

The process-driven composition of Web services is emerging as a promising approach to integrate business applications within and across organizational boundaries. In this approach, individual Web services are federated into composite Web services whose business logic is expressed as a process model. The tasks of this process model are essentially invocations to functionalities offered by the underlying component services. Usually, several component services are able to execute a given task, although with different levels of pricing and quality. In this paper, we advocate that the selection of component services should be carried out during the execution of a composite service, rather than at design-time. In addition, this selection should consider multiple criteria (e.g., price, duration, reliability), and it should take into account global constraints and preferences set by the user (e.g., budget constraints). Accordingly, the paper proposes a global planning approach to optimally select component services during the execution of a composite service. Service selection is formulated as an optimization problem which can be solved using efficient linear programming methods. Experimental results show that this global planning approach outperforms approaches in which the component services are selected individually for each task in a composite service.

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“…Each task in a BP contains a task state variable. The latter is associated with a task state type that determines the possible task states [21]. A transition from one task state to another constitutes a primitive task event.…”

Section: Self-adapting Recovery Netmentioning

confidence: 99%

Self-adapting recovery nets for policy-driven exception handling in business processes

Hamadi

¹

,

Benatallah

²

,

Medjahed

³

2007

Distrib Parallel Databases

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In this paper, we propose Self-Adapting Recovery Net (SARN), an extended Petri net model, for specifying exceptional behavior in business processes. SARN adapts the structure of the underlying Petri net at run time to handle exceptions while keeping the Petri net design easy. The proposed framework caters for the specification of high-level recovery policies that are incorporated either with a single task or a set of tasks, called a Recovery Region. These recovery policies are generic directives that model exceptions at design time together with a set of primitive operations used at run time to handle the occurrence of exceptions. We identified a set of recovery policies that are useful and commonly needed in many practical situations. A tool has been developed to illustrate the viability of the proposed exception handling technique.

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Managing process and service fusion in virtual enterprises

Cited by 86 publications

References 3 publications

Quality driven web services composition

Quality driven web services composition

Quality driven web services composition

Self-adapting recovery nets for policy-driven exception handling in business processes

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