A Study of Selecting Web Services Based on Workflow QoS
| Autor: | Han-Chang Lin, 林漢彰 |
|---|---|
| Rok vydání: | 2005 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 93 Because of the improving technology of network, the suppliers of network applications using different program languages and platforms emerge in order. In order to combine the applications of heterogeneous platforms, the technology of Web Services is established. Recently, the topic of quality performance in the finding of Web Services has already attracted a lot attention, but the study in quality of the composite services has done less. This research will utilize selection model with the concept of workflow QoS, hoping to improve the weakness of quality performance in the finding procedure of Web Services. In this study, using the selection model as the basis for evaluating the Web Services and simulating the whole performance of QoS with the execution order of workflow, but with lot of services, it will spend long period of time for selecting the services. For this reason, except the consideration of the workflow QoS, this research uses genetic algorithm to find the fitting solution more quickly and ranks all the solutions according to the weights of QoS to provide references for service requesters. In the experimental result, the quality performance of composite services selecting with the workflow QoS is better than that without the workflow QoS. In addition, adopting genetic algorithm reduce the spending time for selecting composite services. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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