Thanks! That's very inspiring :) I worked in a similar position for a short time long time ago but after that I hadn't been able to find something similar. Good thing to see that people can find those sweet spots! :D

It's very true what you said about all the implementations available now. Although, for most algorithms I tend to try to implement them myself as a learning experience, maybe the biggest exception is standard SVM since it is kinda tricky but even for that there are some online algorithms that are easy to implement.

Thanks for sharing your experience!