suggestions and questions
Thank you for your feedback!
1.The main reason that I use MICE is it is very easy to implement, and most people in the competition is using the MICE+R to fill the missing value.
3. Yes, I use the full dataset first (with 5 different title classes), but the single neural network & neural network ensemble model result is not good. Therefore, I want to investigate why the neural network ensemble cannot improve the performance. So in the further investigation section, I implement a single neural network and using a dataset that only contain Master title, which contains 53 instances.
Hope this will answer your question.