1 INTRODUCTION  
1.1 Motivation  
1.2 Comparison of Our Survey Paper with Other Existing Survey Papers  
1.3 Research Questions  
1.4 Scope & Key Contributions  
1.5 Structure of the Paper  

2 CLASSIFICATION TYPES, CAUSES, AND ONTOLOGY OF UNCERTAINTY  
2.1 Classification of Uncertainty Types  
2.2 Causes of Uncertainty  
2.3 Ontology of Uncertainty  

3 DECISION MAKING UNDER UNCERTAINTY IN BELIEF THEORY  

4 BELIEF THEORY MEETS DEEP LEARNING  

5 SUMMARY OF THE KEY FINDINGS  

6 CONCLUDING REMARKS  
6.1 Insights, Lessons Learned, and Limitations  
6.2 Future Research Directions