IEEE Transactions on Services Computing

IEEE Transactions on Services Computing (TSC) is a journal that focuses on research on the algorithmic, mathematical, statistical and computational methods that are central in services computing; the emerging field of Service Oriented Architecture, Web Services, Business Process Integration, Solution Performance Management, Services Operations and Management. Read more about TSC


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From the July-August 2018 issue

Policy-Aware Service Composition: Predicting Parallel Execution Performance of Composite Services

By Mai Xuan Trang, Yohei Murakami, and Toru Ishida

Featured article thumbnail image With the increasing volume of data to be analysed, one of the challenges in Service Oriented Architecture (SOA) is to make web services efficient in processing large-scale data. Parallel execution and cloud technologies are the keys to speed-up the service invocation. In SOA, service providers typically employ policies to limit parallel execution of the services based on arbitrary decisions. In order to attain optimal performance improvement, users need to adapt to the services policies. A composite service is a combination of several atomic services provided by various providers. To use parallel execution for greater composite service efficiency, the degree of parallelism (DOP) of the composite services need to be optimized by considering the policies of all atomic services. We propose a model that embeds service policies into formulae to calculate composite service performance. From the calculation, we predict the optimal DOP for the composite service, where it attains the best performance. Extensive experiments are conducted on real-world translation services. We use several measures such as mean prediction error (MPE), mean absolute deviation (MAD) and tracking signal (TS) to evaluate our model. The analysis results show that our proposed model has good prediction accuracy in identifying optimal DOPs for composite services.

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Editorials and Announcements

Announcements

  • We are pleased to announce that James Joshi, a professor in the School of Information Sciences at the University of Pittsburgh, USA, has been named the new Editor-in-Chief of the IEEE Transactions on Services Computing starting in 2017.

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