“…(1) Research on the fundamental theory of intuitionistic fuzzy sets, include: the operational laws, information entropy, distances, similarity and comparison methods for intuitionistic fuzzy sets; aggregation function and aggregation operators for intuitionistic fuzzy information, such as generalized aggregation operator, Sugeno and Choquet integral operators, prioritized aggregation operators, power average operators, Bonferroni mean, dependent aggregation operators, density weighted average operators and so on Liu 2013aLiu , 2013bLiu, Yu 2013;. (2) Research on the decision making methods, mainly include: extensions of the traditional decision making methods to intuitionistic fuzzy sets, such as TOPSIS (Wang et al 2015), VIKOR (Peng et al 2015), ELECTRE (Liu, Zhang 2011;Ebrahimnejad et al 2015;Hashemi et al 2016), TODIM (Li et al 2015), DEMATEL (Govindan et al 2015), MOORA (Pérez-Domínguez et al 2015), MULTIMOORA , COPRAS (Hajiagha et al 2013a), DEA (Hajiagha et al 2013b; and so on are extended to intuitionistic fuzzy information, we can call these extensions the extended decision making methods; another decision making methods are based on the aggregation operators, and can provide the comprehensive values by aggregating the criteria information.…”