Please help me in understanding the followign formulae?
Prediction of the Length of the Next CPU Burst
Pn+1 = a tn +(1-a)Pn
This formula defines an exponential average
Pn stores the past history
tn contents are most recent information
the parameter “a “controls the relative weight of recent and past history of in our prediction
If a =0 then Pn +1 =Pn
That is prediction is constant
If a = 1 then Pn +1 = tn
Prediction is last cpu burst
I dont want to learn this.Please provide some logical explanation