### Reverse Engineering

Reverse Engineering
Ranking Algorithm

There are two main things I consider when judging these different curves. First off, it doesn’t really make sense for the score to get higher as a story gets older; you don’t see stories from a few months ago hopping back onto the front page for no reason. I’m assuming that the score must decrease as $t$ decreases and for a fixed $v$. Mathematically, this is equivalent to saying that the partial derivative $\frac{\mathrm{\partial }\mathcal{F}}{\mathrm{\partial }t}<0$.

grupoed2k@localhost ~]# Source