ACM Reference Format:

Contents

1 INTRODUCTION

2 TRUSTWORTHY PERSPECTIVES & THEIR RELATIONSHIPS IN RECOMMENDATION  
2.1 Explainability with other Perspectives  
2.2 Fairness with other Perspectives  
2.3 Privacy with other Perspectives  
2.4 Robustness with other Perspectives  
2.5 Controllability with other Perspectives  

3 RECOMMENDER SYSTEM BASICS  
3.1 Input and Output of RS  
3.2 Representative Recommendation Algorithms  

4 EXPLAINABILITY  

5 FAIRNESS  

6 PRIVACY  

7 ROBUSTNESS  

8 CONTROLLABILITY  

9 CONCLUSION, CHALLENGES AND OPPORTUNITIES  

9.1 The Cost of Trustworthiness in Recommendation  
9.2 The Trade-offs within Trustworthy Recommendation Perspectives  
9.3 Limitations in Current Evaluations of Trustworthiness