extrapolation

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extrapolation

 [ek-strap″o-la´shun]
inference of one or more unknown values on the basis of that which is known or has been observed; usually applied to estimation beyond the upper and lower ranges of observed data as opposed to interpolation between data points.

extrapolation

the estimation of a value beyond a given series, for example, the extension of the line of a graph beyond the calculated points.
References in periodicals archive ?
There are some limitations to this Fourier constrained extrapolation method applied to ROI reconstruction.
Vector extrapolation methods are often effective strategies to accelerate the convergence of vector sequences.
Computation of the periodic steady-state response of nonlinear networks by extrapolation methods. IEEE Transactions on Circuits and Systems, 27(3), 161-175.
Extrapolation methods can provide a very good estimate of one matrix- vector product, but the problem is that we do not know the best value of v a priori.
The forecast of the predictor [[mu].sub.i,j+h] is invariant to these if and only if the chosen extrapolation method for [[beta].sub.j], [[gamma].sub.k] preserves these linear trends so that they can cancel with the arbitrary linear trend in [[alpha].sub.i] The next result gives a precise formulation of this statement.
Finally, by means of the displacement extrapolation method, the displacement extrapolation curve is shown in Figure 8, and the crack initiation angle of V-shaped notch tip for LY8 bar is about [[theta].sub.c] = 11.3[degrees].
McCafferty, "Validation of corrosion rates measured by the Tafel extrapolation method," Corrosion Science, vol.
As the extrapolation method is used, the [E.sub.g] values of thin films can be determined from the absorption edge, which can be calculated using the relation in (3):
This also helps explain some of the discrepant findings, such as the significant association between physical activity and cardiorespiratory fitness when using the non-exercise prediction equation compared to the non-significant association when using the heart rate extrapolation method.
The value of the approximated function at the external points can be obtained by Lagrange extrapolation method. Using the interval wavelet to approximate a function, the boundary effect can be left in the supplementary domain; that is, the boundary effect is eliminated in the definition domain.
Some laboratories that perform RRR measurements using the field extrapolation method use an experimental configuration in which the magnetic field is parallel to the sample current.