Why not go back to HFT or more general quant trading? In my experience the direct link between work done and profits or lack thereof keeps the skill levels high and reduces internal politics.
152 karma · joined September 10, 2011
Judging by notes I made it as far as the penultimate level of the original set in 2018 and got stuck there, it's a shame the new site doesn't show your submission dates, which I think the old one did.
Although my progress was ridiculously slow, am quite proud that I just sat with the problems when stuck without looking up the solution. Maybe this year I will actually finish it.
It's not a tautology, it's the asymptotic equipartition property.
I just used Cython to speed up a non-vectorisable bit of code in a Gibbs sampling algorithm and I was impressed by the performance increase and ease of use.