%A YUAN Pei-sen, LI Wei, REN Shou-gang, XU Huan-liang %T Algorithm for service optimization under multi-QoS constraints for data services in a food traceability system %0 Journal Article %D 2018 %J Journal of East China Normal University(Natural Science) %R 10.3969/j.issn.1000-5641.2018.03.008 %P 67-76 %V 2018 %N 3 %U {https://xblk.ecnu.edu.cn/CN/abstract/article_25508.shtml} %8 2018-05-25 %X The concept of data services plays an important role in the era of big data. In this paper, an optimization algorithm for web services in food safety traceability is investigated based on the SOA (Service-Oriented Architecture) framework. Traceability services are commonly data-intensive systems, which need to combine multi-source web services. In this paper, by extracting important QoS (Quality of Service) indexes from the web and data services of the system, a multi-QoS based benefit ratio (MQBR) is established, which is then used on the traceability platform for food security management. Based on the MQBR model, the skyline and heuristic method of artificial intelligence is proposed for optimizing the efficiency and quality of service selection. Experiments are conducted to prove the validity of the algorithm. The methods of our study are designed and applied to a food security management application, with multiple QoS constraints in the traceability systems, to improve the overall performance and service quality.