Results 21 to 30 of about 1,042,431 (269)
Estimating the power spectrum covariance matrix with fewer mock samples [PDF]
, 2015 The covariance matrices of power-spectrum (P(k)) measurements from galaxy surveys are difficult to compute theoretically. The current best practice is to estimate covariance matrices by computing a sample covariance of a large number of mock catalogues ...
Pearson, David W., Samushia, Lado
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Law of Log Determinant of Sample Covariance Matrix and Optimal Estimation of Differential Entropy for High-Dimensional Gaussian Distributions [PDF]
, 2013 Differential entropy and log determinant of the covariance matrix of a multivariate Gaussian distribution have many applications in coding, communications, signal processing and statistical inference.
Cai, T. Tony +2 more
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Brownian distance covariance [PDF]
, 2010 Distance correlation is a new class of multivariate dependence coefficients applicable to random vectors of arbitrary and not necessarily equal dimension.
J. Székely, L. Rizzo, Maria
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Performance of internal Covariance Estimators for Cosmic Shear Correlation Functions [PDF]
, 2015 Data re-sampling methods such as the delete-one jackknife are a common tool for estimating the covariance of large scale structure probes. In this paper we investigate the concepts of internal covariance estimation in the context of cosmic shear two ...
Eifler, T. F. +3 more
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Large Covariance Estimation by Thresholding Principal Orthogonal Complements [PDF]
, 2013 This paper deals with the estimation of a high-dimensional covariance with a conditional sparsity structure and fast-diverging eigenvalues. By assuming sparse error covariance matrix in an approximate factor model, we allow for the presence of some cross-
Fan, Jianqing +2 more
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Covariance of WDVV equations [PDF]
, 1997 The (generalized) WDVV equations for the prepotentials in $2d$ topological and $4,5d$ Seiberg-Witten models are covariant with respect to non-linear transformations, described in terms of solutions of associated linear problem.
Mironov, A., Morozov, A.
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Transmit Optimization with Improper Gaussian Signaling for Interference Channels [PDF]
, 2013 This paper studies the achievable rates of Gaussian interference channels with additive white Gaussian noise (AWGN), when improper or circularly asymmetric complex Gaussian signaling is applied.
Guan, Yong Liang +4 more
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Covariant residual entropy [PDF]
Journal of High Energy Physics, 2014 35 pages, 6 figures; v2: references added, matches the published ...
openaire +4 more sources
Analysis of epistasis: A genetic model for triploid endosperm traits
浙江大学学报. 农业与生命科学版, 2007 A genetic model for triploid endosperm traits was proposed on the basis of diallel cross system to analyze additive by additive epistasis of direct effect (AA) and maternal effect (AmAm) along with direct additive effect, dominance effect, cytoplasm ...
CHENG Jun-qi +3 more
doaj +1 more source
Covariance between the forward recurrence time and the number of renewals
Modern Stochastics: Theory and Applications, 2021 Recurrence times and the number of renewals in $(0,t]$ are fundamental quantities in renewal theory. Firstly, it is proved that the upper orthant order for the pair of the forward and backward recurrence times may result in NWUC (NBUC) interarrivals.
Sotirios Losidis
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