1 Introduction 1.1 Computing with words in decision making 1.2 Linguistic symbolic computational models 1.2.1 The 2-tuple linguistic model 1.2.2 The proportional 2-tuple linguistic model 1.2.3 Linguistic hierarchy 1.2.4 Hesitant linguistic term set 1.3 A core problem in linguistic decision making References 2 Numerical scale model 2.1 Numerical scale 2.1.1 The definition of numerical scale 2.1.2 Interval numerical scale 2.2 Linguistic computational...