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The social network analysis (SNA) is a rapidly developing technology to deal with the problem about social network connections. In this paper, we address GDM problem with fuzzy preference relations where the experts have directed social network connections. And we use in-degree and out-degree centrality indices in SNA to build the social characteristics of the experts. Then we utilize the importance induced ordered weighted averaging(I-IOWA) operator to aggregate all the individual fuzzy preference relations with social indices. Furthermore,we investigate the reciprocity, additive consistency and acceptable consistency properties about the obtained group fuzzy preference relations. A procedure of addressing GDM problem with fuzzy preference relations where the experts are within directed social network connections is developed. Moreover, we compare the results of the case where all the experts are independent and the case where all the experts are within directed social network connections. Some useful tips that affect final outranking result in the directed graphical social network connection are obtained. In the end, we summarize the main results of this paper and point out some research directions for future research.<\/jats:p>","DOI":"10.3233\/ifs-162193","type":"journal-article","created":{"date-parts":[[2016,8,19]],"date-time":"2016-08-19T10:30:06Z","timestamp":1471602606000},"page":"1271-1285","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":32,"title":["Social network analysis based approach to\u00a0group decision making problem with\u00a0fuzzy preference relations"],"prefix":"10.1177","volume":"31","author":[{"given":"Junfeng","family":"Chu","sequence":"first","affiliation":[{"name":"School of Economics and Management, Southeast University, Nanjing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xinwang","family":"Liu","sequence":"additional","affiliation":[{"name":"School of Economics and Management, Southeast University, Nanjing, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yingming","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Economics and Management, Fuzhou University, Fuzhou, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2016,5,14]]},"reference":[{"key":"e_1_3_2_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.eswa.2012.05.084"},{"key":"e_1_3_2_3_2","first-page":"225","article-title":"A Fuzzy Approach to Social Network Analysis","author":"Brunelli M.","year":"2009","unstructured":"BrunelliM. and FedrizziM., A Fuzzy Approach to Social Network Analysis, in: Social Network Analysis and Mining, 2009 ASONAM \u201909 International Conference on Advances in, 2009, pp. 225\u2013230.","journal-title":"in: Social Network Analysis and Mining, 2009 ASONAM \u201909 International Conference on Advances in"},{"key":"e_1_3_2_4_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.inffus.2011.11.001"},{"key":"e_1_3_2_5_2","doi-asserted-by":"publisher","DOI":"10.1109\/TFUZZ.2008.2008028"},{"key":"e_1_3_2_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejor.2006.08.032"},{"key":"e_1_3_2_7_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.socnet.2008.03.001"},{"key":"e_1_3_2_8_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.eswa.2014.07.046"},{"key":"e_1_3_2_9_2","doi-asserted-by":"publisher","DOI":"10.1007\/s00500-009-0432-2"},{"key":"e_1_3_2_10_2","first-page":"1","article-title":"Social influence networks and opinion change","volume":"16","author":"Friedkin N.E.","year":"1999","unstructured":"FriedkinN.E. and JohnsenE.C., Social influence networks and opinion change, Advances in Group Processes16 (1999), 1\u201329.","journal-title":"Advances in Group Processes"},{"key":"e_1_3_2_11_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0740-8188(96)90003-1"},{"key":"e_1_3_2_12_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0377-2217(02)00725-7"},{"key":"e_1_3_2_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejor.2003.11.031"},{"key":"e_1_3_2_14_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.fss.2005.05.046"},{"key":"e_1_3_2_15_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ins.2015.02.017"},{"key":"e_1_3_2_16_2","doi-asserted-by":"publisher","DOI":"10.1002\/int.20401"},{"key":"e_1_3_2_17_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.knosys.2014.09.011"},{"key":"e_1_3_2_18_2","first-page":"1","article-title":"Modelling influence in group decision making","author":"P\u00e9rez L.G.","year":"2016","unstructured":"P\u00e9rezL.G., MataF., ChiclanaF., KouG. and Herrera-ViedmaE., Modelling influence in group decision making, Soft Computing (2016), 1\u201313.","journal-title":"Soft Computing"},{"key":"e_1_3_2_19_2","doi-asserted-by":"publisher","DOI":"10.1002\/int.21686"},{"key":"e_1_3_2_20_2","unstructured":"SaatyT.L. 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