M-competitions, from M4 to M5: reservations and expectations

Some of you might have noticed that the guidelines for the M5 competition have finally been released. Those of you who have previously visited this blog, might know my scepticism about the M4 competition. So, I’ve decided to write this small post, outlining my reservations about the M4 and my thoughts and expectations about the […]

True model

In the modern statistical literature there is a notion of “true model”, by which people usually mean some abstract mathematical model, presumably lying in the core of observed process. Roughly saying, it is implied that data we have has been generated by some big guy with a white beard sitting in mathematical clouds using some […]