Paviavio
My colleagues keeps talking about RSS and for sometime I didn’t know what they were talking about. I used my favorate desktop dictionary traydictionary which queries from Cambridge Dictionary of American English but find nothing. I looked up to Wikipedia and found that RSS could mean many many things (see TheFreeDictionary as well). I finally figured it out: it is the acronym of “Root Sum Square”. It is actually a very popular word in the scientific world.
In mathematics, we usually call it the L^{2} norm. That is, For a point X = (x_{1}, x_{2}, …,x_{n}) and a point Y = (y_{1}, y_{2}, …,y_{n}), the L^{2} norm between these two points is defined as:
L^{2}(X,Y) |
Intuitively, it is the distance from one point to another. RSS is clearly more meaningful name for the concept and I can see why engineers like to say that way. It would be good that the math textbooks at least mention this name when L^{2} norm is introduced.
BTW, I just noticed that Tray Dictionary 1.3 has been released. Give it a try.
September 12, 2009 at 10:44 am |
[…] expressions, I have to end to using either existing images (e.g.Normal distribution function, RSS — root sum square) or simple HTML (e.g. 24th Chinese Mathematical Olympiad, 24th Chinese Mathematical Olympiad […]
December 31, 2009 at 1:47 pm |
[…] RSS — root sum square […]