1. Introduction  
1.1 Terminology  
1.2 Overview  
2. Pre-Training  
2.1 Pre-Training Model  
2.2 Supervised Pre-Training  
2.3 Unsupervised Pre-Training  
2.4 Remarks  
3. Adaptation  
3.1 Task Adaptation  
3.2 Domain Adaptation  
4. Evaluation  
4.1 Datasets  
4.2 Library  
4.3 Benchmark  
5. Conclusion