You could try some of the challenges at hackerrank.com : https://www.hackerrank.com/domains/ai/machine-learning https://www.hackerrank.com/domains/ai/machine-le

You could try some of the challenges at hackerrank.com : https://www.hackerrank.com/domains/ai/machine-learning https://www.hackerrank.com/domains/ai/machine-learning (you may need to sign up) Also there's kaggle - https://www.kaggle.com/ https://www.kaggle.com/