Formulas Flashcards
1
Q
Exponential Smoothing with trend adjustment
Initialization
trend line time series
A
ao = yo - (1 - alpha / alpha) x bo
2
Q
Exponential Smoothing with trend adjustment
Update level demand
trend line time series
A
at = alpha x yt + (1-alpha) x (at-1)
3
Q
Exponential smoothing with adjusted trend line
update trend
trend line time series
A
bt = alpha x (at - at-1) + (1-alpha) x bt-1
4
Q
Exponential Smoothing with trend line adjustment
Forecast
trend line time series
A
Pt + tau = at + bt x (1-alpha)/alpha + tau x bt
5
Q
Exponential Smoothing
Forecast
level demand trend series
A
Pt = alpha x yt + (1-alpha) x Pt-1