On Wed, 10 Apr 2002, Hrvoje Niksic wrote:
> Agreed wholeheartedly, but how would you *implement* a non-jittering > ETA? Do you think it makes sense the way 1.8.1 does it, i.e. to > calculate the ETA from the average speed? One common programming technique is the exponential decay model. I believe that the method is chosen for its simplicity and that justifications of its validity are completely after the fact. The simplicity is that one keeps a previously calculated value and averages that value with the current measurement and saves the result for the next iteration, i.e. add and shift right. Justifications are that the current measurement is the most likely predictor of future behavior and that previous measurements are weighted diminishingly over time. You must chose how to normalize the measurement based on irregularity in the measurement interval, however. Roger L. Beeman
