The stock market is inefficient with respect to new developments in machine learning because only a small fraction of the world's data scientists have access to its data.
Numerai data scientists aren't traders or quants, and they don't want to be. They are experts in statistics, machine learning and artificial intelligence, working as geneticists, physicists, students and professors.
They have specialized in building predictive models on data—any data. You will be given stock market data in its purest form, on weekly basis to develop predictive models. The data is in its most abstract form and you will have the opportunity to showcase your machine learning algorithm skills by discovering the predictive structure within the data.
Submit your weekly predictions/models and get paid in Bitcoin (BTC) and also, earn Numerai tokens (NMR) which will soon be released on the Ethereum blockchain on June 20th.