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This book investigates in detail large-scale group decision-making (LSGDM) problem, which has gradually evolved from the traditional group decision-making problem and has attracted more and more attention in the age of big data. Pursuing a holistic approach, the book establishes a fundamental framework for LSGDM with uncertain and behavioral considerations. To address the behavioral uncertainty and complexity of large groups of decision-makers, this book mainly focuses on new solutions of LSGDM problems using the interval type-2 fuzzy uncertainty theory and social network analysis techniques, including the exploration of uncertain clustering analysis, the consideration of social relationships, especially trust relationships, the construction of consensus evolution networks, etc. The book is intended for researchers and postgraduates who are interested in complex group decision-making in the new media era. Authors also investigate the similar features between LSGDM problems and group recommendations to study the applications of LSGDM methods. After reading this book, readers will have a new understanding of the LSGDM study under the real complicated context.
This book consists of ten chapters: Chapter 1 introduces the characteristics and literature review of LSGDM. Chapter 2 provides the related preliminary knowledge of uncertain theory, GDM, and social network analysis. Chapter 3 proposes uncertain decision-making models based on the interval type-2 fuzzy set theory. Chapter 4 solves LSGDM problems under uncertain environments. Chapter 5 develops uncertain LSGDM methods considering social relationships. Chapter 6 studies the influence of social trust relationships on consensus reaching process (CRP) of GDM. Chapter 7 proposes the concept of consensus evolution networks (CENs) and studies the interaction between trust and consensus based on CENs. Chapter 8 discusses several LSGDM models considering trust relationships. Chapter 9 gives new perspectives on CRP research of LSGDM. Chapter 10 introduces several applications of LSGDM models. At last, we summarize the book and propose several future research directions in concluding remarks.
Introduction
Uncertain Theory and Group Decision-Making
Interval Type-2 Fuzzy Decision-Making
Large-Scale Group Decision-Making with Interval Type-2 Fuzzy Preferences
Interval Type-2 Fuzzy Large-Scale Group Decision-Making Considering Social Relationships
Social Trust Relationships in Group Decision-Making
Consensus Evolution Networks in Group Decision-Making
Large-Scale Group Decision-Making Considering Trust Behavior
New Perspectives on Consensus Reaching Process in Large-Scale Group Decision-Making
Application of LSGDM Methods