Chapter 1 Backgrounds and literature review.- Chapter 2 Representational models and computational foundations of some types of uncertain linguistic expressions.- Chapter 3 Group decision making based on EHFLTSs under the framework of decision matrix.- Chapter 4 Preference analysis and applications based on EHFLTSs.- Chapter 5 Preference analysis and group decision making based on LTWHs.- Chapter 6 An aspiration-based approach with multiple types of uncertain linguistic expressions.- Chapter 7 Group decision-making with multiple types of uncertain linguistic Stochastic acceptability analysis.- Chapter 8 Provider selection of big data-based auditing platforms with uncertain linguistic expressions.