Dynamic composition and optimization of Web services

Zeng, Liangzhao; Ngu, Anne H. H.; Benatallah, Boualem; Podorozhny, Rodion; Liu, Hui

doi:10.1007/s10619-008-7030-7

Cited by 78 publications

(39 citation statements)

References 29 publications

(26 reference statements)

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“…Compose, i.e., starting with a known output and a known input, through some intelligent search/ inference techniques, the system returns one or more services that will transform the output of the first Web service into something that can be consumed by the final Web service. This is typically referred to as dynamic semantic Web service composition [20], [21], [22]. The difference with respect to our composite applications is that in most cases, the goal is not to put together a single business process or tightly link fragments of software processes for the purpose of automating a specific task; rather, the goal is to integrate separately created components together "on the glass" [23] and provide the ability for those applications to communicate or interact without prior knowledge of each other or in any specific order.…”

Section: Discussionmentioning

confidence: 99%

“…With this annotation, we are describing the message in terms of an OWL class in an existing ontological model. This message is set as an output of the "pubCityState" operation in a portType (lines [18][19][20][21][22] and included in a portlet type binding (lines [23][24][25][26][27][28][29][30][31][32][33][34][35]. The "pubCityState" operation corresponds to broadcasting the city and state information to PropertyBroker.…”

Section: Semantic Annotation Of Componentsmentioning

confidence: 99%

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Semantic-Based Mashup of Composite Applications

Ngu

Carlson

Sheng

et al. 2010

IEEE Trans. Serv. Comput.

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Abstract-The need for integration of all types of client and server applications that were not initially designed to interoperate is gaining popularity. One of the reasons for this popularity is the capability to quickly reconfigure a composite application for a task at hand, both by changing the set of components and the way they are interconnected. Service-Oriented Architecture (SOA) has recently become a popular platform in the IT industry for building such composite applications with the integrated components being provided as Web services. A key limitation of solely Web-service-based integration is that it requires extra programming efforts when integrating non-Web service components, which is not cost-effective. Moreover, with the emergence of new standards, such as Open Service Gateway Initiative (OSGi), the components used in composite applications have grown to include more than just Web services. Our work enables progressive composition of non-Web-service-based components such as portlets, Web applications, native widgets, legacy systems, and Java Beans. Further, we proposed a novel application of semantic annotation together with the standard semantic Web matching algorithm for finding sets of functionally equivalent components out of a large set of available non-Web-service-based components. Once such a set is identified, the user can drag and drop the most suitable component into an Eclipse-based composition canvas. After a set of components has been selected in such a way, they can be connected by data-flow arcs, thus forming an integrated, composite application without any low-level programming and integration efforts. We implemented and conducted extensive experimental study on the above progressive composition framework on IBM's Lotus Expeditor, an extension of an SOA platform called the Eclipse Rich Client Platform (RCP) that complies with the OSGi standard.

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Section: Discussionmentioning

confidence: 99%

Section: Semantic Annotation Of Componentsmentioning

confidence: 99%

Semantic-Based Mashup of Composite Applications

Ngu

Carlson

Sheng

et al. 2010

IEEE Trans. Serv. Comput.

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“…[39] proposes a composition schema generation process that focuses separately on data flow, functional and nonfunctional requirements. Both requests and produced compositions are modelled as statecharts, supporting parallel, conditional and iterative execution.…”

Section: Qos-aware Service Frameworkmentioning

confidence: 99%

A specification-based QoS-aware design framework for service-based applications

Baryannis

Kritikos

Plexousakis

2017

SOCA

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Effective and accurate service discovery and composition rely on complete specifications of service behaviour, containing inputs and preconditions that are required before service execution, outputs, effects and ramifications of a successful execution and explanations for unsuccessful executions. The previously defined Web Service Specification Language (WSSL) relies on the fluent calculus formalism to produce such rich specifications for atomic and composite services. In this work, we propose further extensions that focus on the specification of QoS profiles, as well as partially observable service states. Additionally, a design framework for service-based applications is implemented based on WSSL, advancing state of the art by being the first service framework to simultaneously provide several desirable capabilities, such as supporting ramifications and partial observability, as well as non-determinism in composition schemas using heuristic encodings; providing explanations for unexpected behaviour; and QoS-awareness through goalbased techniques. These capabilities are illustrated through

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“…The composition schema generator implements the three phase's inference algorithms described in [25] to dynamically generate one or more composition schemas which are represented internally as XML documents. For the generated composition schema, the Execution Plan Optimizer will create an optimal execution plan based on Web services' QoS information and composition schema quality information.…”

Section: C) Composition Schema Managermentioning

confidence: 99%

Realizing Automatic Conversion of Service Models into Web Services towards Dynamic and Adaptive Business Process Management

Bekele¹

2011

IJEEEE

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Abstract-The highly competitive and rapidly changing nature of the current business environment creates tremendous pressure on organizations to collaborate. This led to utterly different type of business eco-system in which individual organizations in collaborative business services increasingly demand for a collaborative business process that can easily adapt to changes. As a result, the development and management of organization's IT infrastructures that can able to cope up with the requirements of dynamic and flexible business environments are challenging. Service-based approach can enhance the development and management of collaborative processes through service abstraction to satisfy the needs of today's dynamic business environment. Service-oriented computing paradigm uses service models to represent the requirements of continuously changing business needs through service abstraction and use platform independent interaction nature of web service and its enabling available technologies for implementation. Hence, in this paper we discussed the collaborative BPM trends and concepts, technologies and proposed a generic framework to realize automatic conversion of service models into Web services in order to support dynamic and adaptive development of collaborative business process and deploy them over the internet through a web service standards platform.

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Dynamic composition and optimization of Web services

Cited by 78 publications

References 29 publications

Semantic-Based Mashup of Composite Applications

Semantic-Based Mashup of Composite Applications

A specification-based QoS-aware design framework for service-based applications

Realizing Automatic Conversion of Service Models into Web Services towards Dynamic and Adaptive Business Process Management

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