1 Introduction
1.1 Previous surveys and our contributions
1.2 Organization
2 Overview
2.1 Problem Definition
2.2 Relevant Learning Problems
3 Long-tailed Datasets and Metrics
3.2 Long-tailedness Metrics
3.3 Performance Evaluation Metrics
4 Long-tailed Visual Recognition
4.1 Data Processing
4.2 Cost Sensitive Weighting
4.4 Other Long-tailed Visual Recognition Methods
4.5 Summary
6 Analysis of Long-tailed Phenomenon
6.2 Analysis of Performance
7 Future Directions
8 Conclusions