Question

the aging algorithm with a=1/2 is being used to predict run times. the previous four runs, from oldest to most recent, are 40, 20,40 and 15 msec. what is the prediction of next time?

Answer 1

Prediction of next time = 25

If take all four previous run times into consideration, the prediction is (((40 + 20) / 2 + 40) / 2 + 15) / 2 = ((30 + 40) / 2 + 15) /2  = (35 + 15) / 2 = 25  

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