标题：User-Centric just-in-time service composition
作者：Zhang, Feng ;Han, Yanbo ;Wei, Yongshan ;Chen, Xin
作者机构：[Zhang, Feng ;Wei, Yongshan ;Chen, Xin ] College of Information Science and Engineering, Shandong University of Science and Technology, Qingdao, Shand 更多
来源：Hsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
摘要：For the situation where business requirements change and become clear step by step during problem-solving process in reality, a user-centric just-in-time service composition strategy is presented. The service composition model is brought forward following the dynamic and static business rules. During the process of composition, users can choose needed services freely. Flexibility of the service composition is enhanced by the negative rules, and the solution space is narrowed by the positive rules. A strategy for services recommendation based on business rules and a just-in-time service process construction are proposed to recommend services without conflict and to help users to find needed services quickly. The definition of service process state is introduced, and the correctness of current service process is clearly shown for users. The cases, compared with related works, indicate that users are of dominance during the service composition process,and the composition can be executed while being constructed. And the system is able to judge the state of the service process by state rules, and to support users to construct correct service process. In addition, the recommended services based on business rules get more accurate to meet real business requirements.