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Soft resource allocation is an important factor of system configuration which plays a critical role in guaranteeing the performance of multi-tier web service systems. There is a tradeoff between real-time performance and resource consumption, and thus the real-time adjustment of soft resource allocation in response to dynamic workload is quite challenging. In this paper, we propose a real-time soft...
In cloud computing, it is an urgent problem to provide stable composition service which can satisfy the personalized requirements for large scale users. This paper takes several aspects of web service into consideration, including Quality of Service (QoS), user preference and the service relationships and proposes a method based viterbi algorithm to reason out the global optimal solution of web composition...
QoS has become an important measure for web service selection. In this paper, we present an approach which can provide the approximate QoS value for users, and support finding the optimal web service. Firstly, it clusters the users based on location and network condition, then according to the QoS historical statistics of users in the same cluster, uses the linear regression algorithm to predict the...
To enforce reliability of composite Web Services at run-time, this paper proposes a transaction management model based on Compensation Planning Graph for Web Service composition. First, a web service composition model with transactional properties is introduced. Second, in order to handle transaction when exceptions are occurred, compensation dependency relationships and Compensation Planning Graph...
In the distributed cross-organization business process, each organization only knows its private orchestration and partial public choreography, It doesn't have any information about the global process. If one organization has to change, it is difficult to compute the impact imposed on other organizations. In this paper, we propose a method to get the global services dependency matrix automatically...
Search for services is one of the basic operations in decentralized e-business environments, and in such applications, reducing search latency is no longer the only motivation. Other important issues should also be considered, such as load balance, selection fairness and quality evaluation of data items. Based on the general peer representation and search methods of random walk in unstructured P2P...
Service discovery is the behavior of locating a Web service which has been unknown previously and meets certain functional criteria. It is an important aspect in the service oriented computing approach. Semantic discovery mechanisms provide a better result set than UDDI, but the mechanisms also have disadvantages. This paper proposes a user experience-oriented Web service discovery method combining...
The target of constructing a user-oriented service repository of e-health is to offer an infrastructure to facilitate the interaction of service providers with its potential consumers directly. A Meta Service-based service description framework and the repository architecture were proposed to meet the requirements from the two types of users. The open and accurate description properties can be utilized...
Smart-flow is an innovative process application mode which involves processes in our daily lives based on the Web services spreading over Internet and the pervasive interactions between users and workflow management systems. The dynamic features of pervasive environments and independent service providers do not allow any centralized control or repository. By combining rationales and techniques in...
Virtual enterprise has been a topic of increasing interests in recent years meanwhile parts library sharing among participant enterprises has become a challenge. This paper analyzes its two demands: one is dynamic and open; the other is the share of domain knowledge. Based on these requirements, it proposes a framework for sharing parts library in virtual enterprise. The framework uses Web service...
As infrastructure of shared services, Web Services provides possibility for business coordination and interoperability under distributed computing environment. However, the traditional centralized Web Services architecture has its limitation and peer-to-peer computing has become a new mode for network computing on the current Internet. This paper presents an collaboratively design method of Web Services...
The emerging semantic web service provides a promising way to address the challenge of building collaborative design system over heterogeneous resources. Efficient services discovery method is a significant challenge for semantic web service. This paper proposes a semantic web service matching algorithm based not only on functions of services but also the world state related to services which is most...
With the growth of web service in quantity, it has become an urgent issue how to compose web service with effective method so as to capacitate web service providers to work cooperatively and exert greater function. The paper introduces web service composition method based on rules and meta-services. Meta services are the abstraction of web services with similar functions, while rules are used to describe...
A key to maintain competitiveness is the ability of an enterprise to interact with or adapt to customers agilely. This paper proposes a new user-oriented business process model, named customized process, to cater for multitudinous individual demand. Firstly, the characteristics or requirements of customized process are analyzed and presented. Then, we describe how to generate agile user interface...
Web services can be managed and coordinated by business processes while computer application systems are more and more based on Internet. Services binding in these business processes evolve autonomously and their coupling is highly loose. Accordingly, exception handling of business processes execution under the Internet environment is one key to ensure the reliability of application systems. In this...
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