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In contrast to the mean absolute percentage error, SMAPE has both a lower and an upper bound. Indeed, the formula above provides a result between 0% and 200%. Indeed, the formula above provides a result between 0% and 200%.
[1] [2] [3] Such motions may be considered as a particular kind of complex harmonic motion. The appearance of the figure is sensitive to the ratio a / b . For a ratio of 1, when the frequencies match a=b, the figure is an ellipse , with special cases including circles ( A = B , δ = π / 2 radians ) and lines ( δ = 0 ).
Because actual rather than absolute values of the forecast errors are used in the formula, positive and negative forecast errors can offset each other; as a result, the formula can be used as a measure of the bias in the forecasts. A disadvantage of this measure is that it is undefined whenever a single actual value is zero.
Any non-linear differentiable function, (,), of two variables, and , can be expanded as + +. If we take the variance on both sides and use the formula [11] for the variance of a linear combination of variables (+) = + + (,), then we obtain | | + | | +, where is the standard deviation of the function , is the standard deviation of , is the standard deviation of and = is the ...
In physics, there are equations in every field to relate physical quantities to each other and perform calculations. Entire handbooks of equations can only summarize most of the full subject, else are highly specialized within a certain field. Physics is derived of formulae only.
Perfect for those who want natural-looking, medium coverage that evens skin tone and covers redness, dark spots and imperfections, Estée Lauder's Futurist formula is a great all-season foundation ...
In computing, a roundoff error, [1] ... The condition number of a problem is the ratio of the relative change in the solution to the relative change in the input. [3]
Prior to the loss to the Red Bulls, NYCFC stunned No. 3 seed FC Cincinnati in Round 1, forcing a Game 3 for the best-of-three series and then taking the 0(6)-0(5) win in penalties.