1. 推荐系统 
 设计recommendation system
2. 预测Order Number 
 如何predict order number
3. Designing a Home Feed Ranking System 
 Describe the overall flow of designing a home feed ranking system, and discuss the maintenance of the model post-deployment, as well as the choices for ML infrastructure stack.
4. ML Model Adaptation for Different Domains 
 How would you adapt a model that is used for ranking restaurants to sort items in a grocery store, considering there are not many labels available?
5. General Machine Learning Questions 
 Prepare to discuss general machine learning questions, which may cover a broad range of topics within the field.