항목
-
Iterative proportional fittingconvergence in the worst case (Fienberg 1970), but exponential convergence has also been observed (Pukelsheim and Simeone 2009). If a direct estimator (i.e. a closed form of (\hat{m}_{ij})) exists, IPFP converges after 2 iterations. If unique MLEs do not exist, IPFP converges toward the so-called...출처 영어 위키백과
-
Fixation indexthe estimator by Weir & Cockerham (1984), or performing an Analysis of molecular variance. A list of implementations is available at the end of this article. This comparison of genetic variability within and between populations is frequently used in applied population genetics. The values range...출처 영어 위키백과
-
Kernel methods for vector outputThe estimator of the vector-valued regularization framework can also be derived from a Bayesian viewpoint using Gaussian process methods in the case of a finite dimensional Reproducing kernel Hilbert space. The derivation is similar to the scalar-valued case Bayesian interpretation of...출처 영어 위키백과
-
Phylogenetic comparative methodscontrasts estimator.). In PGLS, the parameters of the evolutionary model are typically co-estimated with the regression parameters.PGLS can only be applied to questions where the dependent variable is continuously distributed; however, the phylogenetic tree can also be incorporated into the...출처 영어 위키백과
-
Spectral estimation of multidimensional signalsl,m) must be chosen such that known autocorrelation coefficients are matched.Limitations:- 1.It has constrained optimization. It can be overcome by using the method of Lagrange multipliers. 2. All pole spectral estimate is not the solution to maximum entropy in multidimensional case as it is in...출처 영어 위키백과
-
Mean 平均数x^m power mean, f(x) = \ln x geometric mean. The weighted arithmetic mean (or weighted average) is used if one wants to combine average values from samples of the same population with different sample sizes: \bar{x} = \frac{\sum_{i=1}^n{w_i \cdot x_i}}{\sum_{i=1}^n {w_i}}. The weights w_i...출처 영어 위키백과
-
Distance correlationif (M, d^{1/2}) is isometric to a subset of a Hilbert space.Klebanov, L. B. (2005) N-distances and their Applications, Karolinum Press, Charles University, Prague. If both metric spaces have strong negative type, then \operatorname{dCov}^2(X, Y)= 0 iff X, Y are independent. Alternative definition...출처 영어 위키백과
-
Pranab K. Senan M.Sc. in 1957, and a Ph.D. in 1962; his doctoral advisor was Hari Kinkar Nandi. He taught for three years at the University of Calcutta and one more year at the University of California, Berkeley before joining the UNC faculty in 1965; although he has held visiting positions at other...출처 영어 위키백과
-
Hadamard matrix 아다마르 행렬, アダマール行列parameter estimator. Let H be a Hadamard matrix of order n. The transpose of H is closely related to its inverse. The correct formula is: H H^{\mathrm{T}} = n I_n \ where In is the n × n identity matrix and HT is the transpose of H. To see that this is true, notice that the rows of H are all...출처 영어 위키백과
-
Directional statisticsn=|m_n|\, while the angular parts of the higher moments are just (n \theta_\mu) \mod 2\pi. The lengths of the higher moments will all lie between 0 and 1. Various measures of location and spread may be defined for both the population and a sample drawn from that population. The most common...출처 영어 위키백과
-
Design effecteach cluster and intra-cluster correlation of \rho, the design effect. Deff, is given by: D_\text{eff} = 1 + (m - 1) \rho . Formally, the design effect is the ratio of two theoretical variances for an estimator: the actual variance for a given sampling design; the variance assuming the same...출처 영어 위키백과
-
Log wind profileare rare and indicate excessively rough terrain).The log wind profile is generally considered to be a more reliable estimator of mean wind speed than the Wind profile power law in the lowest 10–20 m of the planetary boundary layer. Between 20 m and 100 m both methods can produce reasonable...출처 영어 위키백과