The parameters of the NRTL method are fitted, for binary hydrocarbon systems, on the activity coefficients calculated by the Flory Hildebrand method with binary coefficients lij of deviation from the geometric mean assumption for cohesive energy densities (NRTL-FH parameters).
The coefficient of standard deviation Vσ was appointed as the feature index.
A very explicit approximate expression for the asymptotic coefficient of standard deviation of the estimator is derived, and it can be used to construct confidence intervals and optimal ways of weighting information from different markers.
In this study, various statistical characteristics of images, viz., mean of fractal dimension, standard deviation of fractal dimension, lacunarity, mean of ripplet coefficient, standard deviation of ripplet coefficient, mean of autocorrelation coefficient, and standard deviation of autocorrelation coefficient, are used for feature extraction of each image in eight databases.
The coefficient of variation (standard deviation / mean) varied between 14 and 28%, reflecting deviating opinions between panel members about the relative importance of criteria.
The full data set is then used to estimate the performance of the GRNN model using various non-independent indicators, such as the coefficient of correlation, standard deviation of residuals, and reduction in variance with respect to the initial variability.
Data analysis showed that the coefficient of variation, standard deviation and error were within acceptable ranges for most of the cytokines (see Table 4 for more details).
The coefficient of variation (standard deviation divided by the mean) for both flow (CVVT) and EAdi-related variables (CVEAdimax) was calculated.
The variance can be used to calculate the Fano factor (variance of fluctuations divided by the mean concentration) and the coefficient of variation (standard deviation of fluctuations divided by the mean concentration) [ 32].
