The GG Robot is a machine learning algorithm designed to analyse in-game accounts and find what has been boosted (bought with real assets). Once the algorithm identifies the “boosts” or valuable in-game items/gold, it can predict when and what service the user will buy next.

You can read a short simple article here https://blog.goodaudience.com/what-is-machine-learning-simple-explanation-5afda4230ce9

And how we use it in GGRocket here https://medium.com/@GGRocket/machine-learning-in-ggrocket-how-we-use-it-f8c68f731f99