Factor analysis (FA), as a typical variance-based feature selection and representation technique, is different from traditional PCA which is formulated on matrix decomposition.
The blue curve shows a fit of the typical variance σ as a function of the mean μ : σ = 0.02 + 384 e − μ − 156,915 e −2 μ.
For better visual effects, the saliency map is traditionally smoothed with a Gaussian filter g(x) with typical variance of 8: begin{aligned} S x) = g(x)*textit{F}^{-1}left[ mathrm{exp}(P f) + R(f))^2right].
A typical noise variance estimation algorithm used in wireless communication systems and specifically within the context of spectrum sensing [18], solves a yule-walker set of equations using Levinson-Durbin algorithm and needs a complexity of 2MN 2 cflops [19].
Subsequently, the accuracy of aggregation models assuming relative homogeneity and based on small stochasticity (i.e. Wiener process with typical variance 0.01) is questionable.
Most notably, they correctly assumed an appropriate noise model (additive noise), and characterized changes in gene expression relative to the typical variance observed for each gene.
Typical signals from serum samples of non-infected volunteers ranged between 0.15 and 0.40 absorbance units, with typical variance coefficients of less than 5% and standard deviations lower than 0.01 units.
Resting and well-fed humans are generally well hydrated, 103 and the typical variance in day-to-day total body water fluctuates from 0.2%to0.7%7% of body mass.
Estimation of the region of potential volcanic vent breakout in a field represents a typical bias-variance trade-off.
This prior carries more information than a typical non-informative variance prior (e.g., the above mentioned gamma distribution).
For example, one could loosely interpret s 2 as a "typical" SNP effect variance component in a BayesA model (based on the t-distribution being defined as a scaled-inverted chi square distribution on SNP-specific variances with heterogeneity across SNPs determined by v), such that its value should be inversely related to the number of SNPs used in an analysis.
