Admit it. This formula looks a bit intimidating. But what is it?
I'm somewhat associated with a re-engineering project in which simple names for things ("store") are being replaced with more obscure names ("venue"). This adds unnecessary confusion, and in a re-engineering project there's already enough confusion.
In this spirit, I found a statistical reference to the Heavyside Function, which sounds impressive. Here it is, straight out of the journal, in section 3.1:
So, this is a complicated way to say "is the number (z) equal to or greater than zero", which is a lot easier to understand.
But there's more madness. As it turns out, the Heavyside function is more commonly spelled as the heaviside function, thus obscuring the meaning even further. Wikipedia, apparently with a straight face, notes
and, as if that wasn't obscuring what's really going on enough, notes that often an integral representation of the heaviside function is useful:
As for me, I think I'll just keep using IF statements.