Sentiment Analysis / User classification / Chatbots
1. Topic-specific sentiment i.e. Topic Modelling + Sentiment Analysis
2. User classification by what they say online
3. Neural Networks vs Support Vector Machines vs Naive Bayes
4. Chatbot architecture selection
Audio and Image Generation
1. Tacotron and other text-to-speech system (Lyrebird)
2. Image denoising and scaling (Waifu2x)
3. Image swapping and fabrication (Deepfakes)
Others
1. Facial recognition and classification by Age, Sex, Race etc.
2. Video games and cryptocurrency strategies