covariance

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covariance

[kō′ver·ē·əns]
(statistics)
A measurement of the tendency of two random variables, X and Y, to vary together, given by the expected value of the variable (X-X [OB ])(Y-Y [OB ]), where X [OB ] and Y [OB ] are the expected values of the variables X and Y respectively.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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They used automated chamber systems, which operate independently of the eddy covariance method. A comparison of this estimate of soil respiration only with [R.sub.E_NB] of the entire ecosystem (938 g x C[m.sup.-2] x [yr.sup.-1] in 2012) again leads to the presumption that [R.sub.E_NB] does not fully capture the ecosystem respiration.
Carbon Exchange between the Atmosphere and a Subtropical Evergreen Mountain Forest in Taiwan
The areas shown in Figure 5 are calculated from the PSD functions generated by the covariance method. The features obtained from first channel data of EGG signals for fasting and satiety stages were not sufficient to differentiate the patient and the healthy group.
Determining of Gastroparesis Disease from Electrogastrogram Signals Using Cramer-Rao Lower Bound and Power Spectral Density
The Covariance Method. The covariance method is similar to the Yule-Walker method in that it minimizes the forward prediction error in the least-squares sense, but it does not consider any windowing of the data.
Robust modeling of low-cost MEMS sensor errors in mobile devices using fast orthogonal search
Scherbaum: Instantaneous polarization attributes based on an adaptive approximate covariance method, Geophysics, 71, V99-V104 (2006).
Imaging of deep structure using reflection waves detected by spectral matrix analysis and confidence levels

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