American Journal of Business and Operations Research AJBOR 2692-2967 2770-0216 10.54216/AJBOR https://www.americaspg.com/journals/show/6 2018 2018 Faculty of Information Technology, Vietnam National University of Agriculture, Vietnam Ngoc Minh Chau, Nguyen Thi Lan, Nguyen Xuan Thao In this paper, we propose some novel similarity measures between picture fuzzy sets. The novel similarity measure is constructed by combining negative functions of each degree membership of picture fuzzy set. We apply them in several pattern recognition problems. Finally, we apply them to find the fault diagnosis of the steam turbine. 2020 2020 5 18 10.54216/AJBOR.010101 https://www.americaspg.com/articleinfo/1/show/6