1. Introduction  
1.1. Motivating Scenarios  
2. Related Work  
2.1. Knowledge Graphs  
2.2. Personalized Information Access  
2.4. Knowledge Extraction and Knowledge Base Population  
2.5. The Semantic Web and Semantic Web Technologies  
3. Personal Knowledge Graphs  
3.1. What is a Personal Knowledge Graph?  
3.2. The PKG Ecosystem  
4. Survey  
4.1. Population  
5. Challenges and Opportunities  
5.1. Ecosystem  
5.2. Population  
5.3. Representation and Management  
5.4. Utilization  
6. Conclusion