Edited by author 05-02-2002 04:13 PM
to answer Dave's quick question: the doted equal sign is \doteq tag in \latex. :Some people use it as "approximately equal". But I think the authors use it whenever they want to define the term at the left hand side or the right hand side of the equation.

Going through section 2.1, I couldn't find "definition" of k. I think it is the parameter for the "moving average".