报告题目：Large Scale Group Decision Making: New Challenges for Consensus Reaching Processes

　　报告专家：Prof. Luis Martínez

　　邀请人：陈振颂

　　报告时间：2018年04月13日下午3：00

　　报告地点：结构楼422教室

　　Abstract

　　Consensus reaching processes (CRPs) play an increasingly important role in the resolution of group decision making (GDM) problems: a solution acceptable to all the experts participating in a problem is necessary in many real-life contexts. The appearance of new requirements in GDM problems related to the group members involved due to new technology enablement, societal and technological trends, such as e-democracy and social networks, has provided a new trend in GDM as it is Large Scale Group Decision Making (LSGDM). In these problems CRPs keep playing the same key role to obtain group acceptable solutions or even more important because agreed solutions are harder.

　　Due to the fact that, in spite of the myriad of classical CRP models in the literature they have not shown themselves as a valid tool in LSGDM because of different reasons. Therefore, new challenges must be face within CRPs for LSGDM. This talk aims at dealing with two different objectives.

　　Firstly, it is revised and introduced a taxonomy that provides an overview and categorization of classical consensus models for group decision making problems under uncertainty, showing why do they fail to cope with LSGDM? And pointing out what are the new challenges that CRPs must overcome in LSGDM?

　　Secondly, taking into account that classical models focus on solving group decision making problems where few decision makers participate, but nowadays, societal and technological trends that demand the management of larger scales of decision makers, such as e-democracy and social networks, add a new requirements to the solution of consensus-based group decision making problems, such as:

　　A large number of consensus approaches have been proposed to support groups in such processes, each one with its own characteristics, such as the methods utilized for the fusion of information regarding the preferences of experts. Given this variety of existing approaches in the literature to support consensus reaching processes, this talk considers two main objectives.

　　i)The development of agent based models to deal with many decision makers.

　　ii)Increase the convergence of the consensus process keeping decision makers sovereign.

　　iii)Mechanisms to detect decision makers’ non-cooperative behaviours in consensus, which might bias the consensus reaching process.

　　iv)And monitoring tools to evaluate easily the evolution of the consensus process.

　　Short Bio

　　Prof. Luis Martínez was born in 1970. He received the M.Sc. and Ph.D. degrees in Computer Sciences, both from the University of Granada, Spain, in 1993 and 1999, respectively. Currently, he is Full Professor of Computer Science Department at the University of Jaén. His current research interests are fuzzy decision making, linguistic preference modelling, fuzzy systems, decision support systems, personalized marker tin, computing with words and recommender systems.

　　He co-edited eleven journal special issues on fuzzy preference modelling, soft computing, linguistic decision making and fuzzy sets theory and has been main researcher in 14 R&D projects, also has published more than 100 papers in journals indexed by the SCI as well as 33 book chapters and more than 150 contributions in International Conferences related to his areas. He is member of the European Society for Fuzzy Logic and Technology, IEEE. Co-Editor in Chief of the of the International Journal of Computational Intelligence Systems and an Associated Editor of the journals IEEE Transactions on Fuzzy Systems, Information Fusion, the International Journal of Fuzzy Systems, Journal of Intelligent & Fuzzy Systems, Applied Artificial Intelligence, Journal of Fuzzy Mathematics and serves as member of the journal Editorial Board of the Journal of Universal Computer Sciences.

　　He received twice the IEEE Transactions on Fuzzy Systems Outstanding Paper Award 2008 and 2012 (bestowed in 2011 and 2015 respectively). And he is Visiting Professor in University of Technology Sydney, University of Portsmouth Isambard Kingdom Brunel Fellowship Scheme), in the Wuhan University of Technology (Chutian Scholar), Guest Professor in the Southwest Jiaotong University and Honourable professor in Xihua University both in Chengdu (China). Eventually, He received twice the IEEE Transactions on Fuzzy Systems Outstanding Paper Award 2008 and 2012 (bestowed in 2011 and 2015 respectively). And he is Visiting Professor in University of Technology Sydney, University of Portsmouth Isambard Kingdom Brunel Fellowship Scheme), in the Wuhan University of Technology (Chutian Scholar), Guest Professor in the Southwest Jiaotong University and Honourable professor in Xihua University both in Chengdu (China). Eventually, he has been appointed as Highly Cited Researcher 2017 in Computer Science according to the Web of Science.