anonymous user Thanks, Here are the Azure machine learning notebook samples that you can participate and contribute on the same.
Other links for ML competitions i.e., kaggle and driven data to work with the same. can you please add more details about the use-case that you are trying. Are you looking for data scientist resources, If yes below links will be helpful to work with the teams.
https://github.com/Azure/MachineLearningNotebooks
https://www.drivendata.org/competitions/
https://www.kaggle.com/