Exact(3)
However after critical point (Variance = 10−2) method 1 shows minimum T M index because the dynamic phasor concept is more sensitive to noise due to its flat gain around fundamental frequency.
Variance components for the x and y coordinates of each point were summed to obtain the point variance estimates shown in Table 1.
This extensive sampling procedure allowed us to ascertain at which point variance component estimates became most stable, and at which point the inclusion of additional animals into training yielded diminishing returns.
Similar(57)
We further analyzed the implications of introducing the concept of degree of confidence, based on the estimated point variances, into the estimates of some of the indices.
Point variances are the sums of variance components in the x and y dimensions.
The average of the set of point-by-point variances around the mean path provides a measure of the bird's fidelity to its habitual path.
Detailed descriptive statistics and measures of association were computed using the SUDAAN system (Version 9.0, Research Triangle Institute, Research Triangle Park, NC), to take into account the complex survey design and design effect in producing point and variance estimates using Taylor series linearization for variance estimation [ 21].
For the first measurement point, the variance was satisfactory and reached an acceptable level at the second measurement point with a value of 1.26.
According to Fig. 17, there is a stable trend for least square based methods (method 1, 2 and 3) before critical point with variance about 10−2.
To avoid bias in point and variance estimates, we incorporated stratification and cluster effects with svymean or svyprop commands and strata (administrative division), psu (veterinary center), and pweight (probability weightings) (5 ).
This observation becomes even more clear by considering Figures 6 and 7. There, we compare the previously introduced "average energy points" and "energy variance points" to the analytically determined expected free energy and corresponding variance from [ 21], respectively.
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