Time Weighted Rolling Average
Err, Nat, Paul Evans's version, and "Time Weighted Rolling Average" are essentially the same. The way you calculate the numeric constant is different, but the end result is the same. About the statement "The old value that exceed the n limited will be removed from averaged value like a magic!" isn't really anything magic, it's just weighting old values less. --Rednaxela 03:28, 17 February 2009 (UTC)
Thanks! I haven't realize that, just copy from old wiki! I'll change this page and move "Time Weighted Rolling Average" to sample implementations instead. About that statement, the value that exceed n will weight less enough that has really no side effects. The statement "like magic!" is one of statement on the old wiki, I want to keep it.