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Q-SAC: Toward QoS Optimized Service Automatic Composition

by Hanhua Chen, Hai Jin, Xiaoming Ning, Zhipeng Lü , 2005
"... The emerging service grids bring together various distributed services to a ‘market ’ for clients to request and enable the integration of services across distributed, heterogeneous, and dynamic virtual organizations. In the experience of constructing and using the ChinaGrid, we meet two challenges, ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
, optimizing the QoS of the grid resources and minimizing complexity for application users and developers. In this paper, we present Q-SAC, a QoS optimized service automatic composition model to address these problems. Two main features of Q-SAC are (1) automatic grid service composition, and (2) global level

Towards optimal service composition upon QoS in

by Chattrakul Sombattheera, Jun Shen
"... agent cooperation ..."
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agent cooperation

Anytime Algorithm for QoS Web Service Composition ∗

by Hyunyoung Kil, Wonhong Nam
"... The QoS-aware web service composition (WSC) problem aims at the automatic construction of a composite web servicewiththeoptimalaccumulatedQoSvalue. Itis, however, intractable to solve the QoS-aware WSC problem for large scale instances, since the problem corresponds to a global optimization problem. ..."
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The QoS-aware web service composition (WSC) problem aims at the automatic construction of a composite web servicewiththeoptimalaccumulatedQoSvalue. Itis, however, intractable to solve the QoS-aware WSC problem for large scale instances, since the problem corresponds to a global optimization problem

Adaptive service composition in flexible processes

by Danilo Ardagna, Barbara Pernici - IEEE TRANS. SOFTWARE ENG , 2007
"... In advanced service oriented systems, complex applications, described as abstract business processes, can be executed by invoking a number of available Web services. End users can specify different preferences and constraints and service selection can be performed dynamically identifying the best s ..."
Abstract - Cited by 141 (5 self) - Add to MetaCart
proposed in the literature and demonstrate the effectiveness of our approach toward the identification of an optimal solution to the QoS constrained Web service selection problem.

QoS based Semi-Automatic Web Service Composition using Multi-Agents Systems

by G. Vadivelou, E. Ilavarasan, M. S. Yasmeen
"... Abstract-This paper presents an agent and ontology based approach that supports the semi-automatic composition of Web services. A Web service is an accessible application that other applications and humans can discover and invoke to satisfy multiple needs. To reduce the complexity featuring the comp ..."
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. The Web Ontology Language (OWL) is a family of knowledge representation languages for authoring ontologies. This paper provides the way to select an optimal composition of services and it also propose a framework for Semi-Automatic Web Services Composition.

Towards A QoS Modeling and Modularization Framework for Component-based Systems

by Sumant Tambe , Akshay Dabholkar , Aniruddha Gokhale , Amogh Kavimandan - In Proceedings of the EDDOC Workshop on Advances in Quality of Service Management (AQuSerM , 2008
"... Abstract Current domain-specific modeling (DSM) frameworks for designing component-based systems provide modeling support for system's structural as well as non-functional or quality of service (QoS) concerns. However, the focus of such frameworks on system's non-functional concerns is an ..."
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that provides strong separation between the structural and nonfunctional dimensions. CQML supports independent evolution of structural metamodel of composition modeling languages as well as QoS metamodel. To evaluate, we superimpose CQML on a purely structural modeling language and automatically generate

Efficient Composition of Semantic Web Services with End-to-End QoS Optimization*

by Xu Bin 许 斌, Luo Sen 罗 森, Yan Yixin (闫奕歆
"... Abstract: The efficiency of QoS-aware service composition is important since most service composition problems are known to be NP-hard. With the growing number of web services, service composition is like a decision problem on selecting services or/and execution plans to satisfy the users ’ end-to-e ..."
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-to-end QoS re-quirements (e.g. response time, throughput). Composite services with the same functionality may have dif-ferent execution plans, which may cause different end-to-end QoS. This paper presents a model combining semantic data-links and QoS, which leads to an efficient approach to automatic

A Dynamic Approach toward QoS-Aware Service Workflow Composition

by David Chiu, Sagar Deshp - In ICWS , 2009
"... Web service-based workflow management systems have garnered considerable attention for automating and scheduling dependent operations. Such systems often sup-port user preferences, e.g., time of completion, but with the rebirth of distributed computing via the grid/cloud, new challenges are abound: ..."
Abstract - Cited by 4 (0 self) - Add to MetaCart
: multiple disparate data sources, networks, nodes, and the potential for moving very large datasets. In this paper, we present a framework for integrat-ing QoS support in a service workflow composition system. The relationship between workflow execution time and ac-curacy is exploited through an automatic

Hybrid Optimization Algorithm for Large-Scale QoS-Aware Service Composition

by Pablo Rodriguez-mier, Manuel Mucientes, Manuel Lama
"... Abstract—In this paper we present a hybrid approach for automatic composition of Web services that generates semantic input-output based compositions with optimal end-to-end QoS, minimizing the number of services of the resulting composition. The proposed approach has four main steps: 1) generation ..."
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Abstract—In this paper we present a hybrid approach for automatic composition of Web services that generates semantic input-output based compositions with optimal end-to-end QoS, minimizing the number of services of the resulting composition. The proposed approach has four main steps: 1) generation

An End-to-End Approach for QoS-Aware Service Composition

by Florian Rosenberg, Predrag Celikovic, Anton Michlmayr, Schahram Dustdar
"... Abstract—A simple and effective composition of software services into higher-level composite services is still a very challenging task. Especially in enterprise environments, Quality of Service (QoS) concerns play a major role when building software systems following the Service-Oriented Architectur ..."
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Abstract—A simple and effective composition of software services into higher-level composite services is still a very challenging task. Especially in enterprise environments, Quality of Service (QoS) concerns play a major role when building software systems following the Service
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