“…Integration is an important task in decision support process (Chiclana et al, 1998;Rao, 2008;Liu et al, 2010;Perçina and Kahramanb, 2010;Vu et al, 2014), as well as it does in group decision making process with preference information on alternatives (Cabrerizo et al, 2013;Chiclana et al, 2013). In group decision making process, multiple experts are always involved and express their preference information on alternatives in different formats due to different culture and education backgrounds, such as, fuzzy preference relations , pairwise comparison(Saaty, 2008, linguistics with different granularities (Mata, et al, 2009).…”