You can also refer to these links:
- Contextual bandits for personalization: https://www.microsoft.com/en-us/research/blog/contextual-bandit-breakthrough-enables-deeper-personalization/
- How Netflix uses contextual bandits: https://medium.com/netflix-techblog/artwork-personalization-c589f074ad76
- Collaborative filtering using MAB: https://arxiv.org/pdf/1708.03058.pdf