Domain Knowledge-Based Automatic Workflow Generation

Chun, Soon Ae; Atluri, Vijayalakshmi; Adam, Nabil R.

doi:10.1007/3-540-46146-9_9

Cited by 29 publications

(19 citation statements)

References 10 publications

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“…Although users also can use a process modeling tool, like a BPEL editor, to manually design a workflow, an alternative approach of automated workflow generation is proposed [11]. • Workflow Specification: This module converts the input workflow model into XML-based BPEL-like specification for execution as shown Example 8.…”

Section: System Architecture and Implementationmentioning

confidence: 99%

A decentralized execution model for inter-organizational workflows

Atluri

Chun

Mukkamala

et al. 2007

Distrib Parallel Databases

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Workflow Management Systems (WFMS) are often used to support the automated execution of business processes. In today's networked environment, it is not uncommon for organizations representing different business partners to collaborate for providing value-added services and products. As such, workflows representing the business processes in this loosely-coupled, dynamic and ad hoc coalition environment tend to span across the organizational boundaries. As a result, it is not viable to employ a single centralized WFMS to control the execution of the inter-organizational workflow due to limited scalability, availability and performance. To this end, in this paper, we present a decentralized workflow model, where inter-task dependencies are enforced without requiring to have a centralized WFMS. In our model, a workflow is divided into partitions called self-describing workflows, and handled by a light weight workflow management component, called the workflow stub, located at each organization. We present a performance study by considering different types of workflows with varying degrees of parallelism. Our performance results indicate that decentral-56 Distrib Parallel Databases (2007) 22: ized workflow management indeed enjoys significant gain in performance over its centralized counterpart in cases where there is less parallelism.

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Section: System Architecture and Implementationmentioning

confidence: 99%

A decentralized execution model for inter-organizational workflows

Atluri

Chun

Mukkamala

et al. 2007

Distrib Parallel Databases

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“…We have developed an automatic service flow composition algorithm and implemented a prototype in the E-government domain [10,12,11]. In this domain, the services discovered based on the rules are usually unique, i.e.…”

Section: Policy-based Service Compositionmentioning

confidence: 99%

“…Figure 1 illustrates these different levels of compatibility rules in a service composition. Prior work [10,12] on Web service composition considers syntactic and semantic compatibilities, whereas, in this paper, we consider all the three types of compatibilities. The standard XML markup languages such as WSDL, UDDI, RDF, DAML-S, and OWL, facilitate the Web service discovery and composition.…”

Section: Introductionmentioning

confidence: 99%

Using Semantics for Policy-Based Web Service Composition

Chun

Atluri

Adam

2005

Distrib Parallel Databases

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Abstract. Proliferation of Web technologies and the ubiquitous Internet has resulted in a tremendous increase in the need to deliver one-stop Web services, which are often composed of multiple component services that cross organizational boundaries. It is essential that these Web services, referred to in this paper as service flows, be carefully composed in a dynamic and customized manner to suit to the changing needs of the customers. This composition should be conducted in such a manner that (i) the composed service flow adheres to the policies imposed by the organizations offering the component services, (ii) the selected component services are compatible with one another so that the entire composition would result in a successful service flow, and (iii) the selected component services most closely meet the customer requirements. In this paper, we propose a policy-based Web service composition that utilizes the semantics associated with the component services.We consider policies imposed by different entities while composing service flows, which include service policies (imposed by the organizations offering component services), service flow policies (associated with the entire service flow), and user policies (the user requirements expressed as policies). In addition to these policies, one may consider rules at the syntactic and semantic levels that can be used to select relevant component services in order to compose customized service flows, by considering the notions of syntactic, semantic and policy compatibility. We model the different policies and the service topic ontology using OWL, DAML-S, RuleML and RDF standards.

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“…Figure 1 illustrates these different levels of compatibility rules in a service composition. Prior work [7,8] on Web service composition considers syntactic and semantic compatibilities, whereas, in this paper, we consider The standard XML markup languages such as WSDL, UDDI, RDF, DAML-S, and OWL, facilitate the Web service discovery and composability problem. They allow the discovery and composition based on syntax and semantics of described Web services.…”

Section: Overview Of Our Approach To Service Compositionmentioning

confidence: 99%

“…We have developed an automatic workflow composition algorithm and prototype in the Egovernment domain [7,8,9]. In the e-government domain, the services discovered based on the rules are unique.…”

Section: Policy-based Selection Of Service Providermentioning

confidence: 99%