1 INTRODUCTION

2 PROBLEM OVERVIEW
2.1 Problem Definition
2.2 Datasets
2.3 Evaluation Metrics
2.4 Applications
2.5 Relationships with Related Tasks

3 CLASSIC METHODS
3.1 Class Re-balancing
3.2 Information Augmentation
3.3 Module Improvement

4 EMPIRICAL STUDIES
4.1 Novel Evaluation Metric
4.2 Experimental Settings
4.3 Results on ImageNet-LT
4.4 Results on iNaturalist 2018
4.5 Analysis
4.6 Summary of Empirical Observations

5 FUTURE DIRECTIONS

6 CONCLUSION