Results 31 to 40 of about 15,885 (295)

Asymptotic and bootstrap tests for subspace dimension

open access: yesJournal of Multivariate Analysis, 2022
Most linear dimension reduction methods proposed in the literature can be formulated using an appropriate pair of scatter matrices, see e.g. Ye and Weiss (2003), Tyler et al. (2009), Bura and Yang (2011), Liski et al. (2014) and Luo and Li (2016). The eigen-decomposition of one scatter matrix with respect to another is then often used to determine the ...
Oja, Hannu   +3 more
openaire   +6 more sources

Randomness extraction and asymptotic Hamming distance [PDF]

open access: yesLogical Methods in Computer Science, 2013
We obtain a non-implication result in the Medvedev degrees by studying sequences that are close to Martin-L\"of random in asymptotic Hamming distance. Our result is that the class of stochastically bi-immune sets is not Medvedev reducible to the class of
Cameron E. Freer, Bjoern Kjos-Hanssen
doaj   +1 more source

A covariance matrix test for high-dimensional data [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2016
For the multivariate normally distributed data with the dimension larger than or equal to the number of observations, or the sample size, called high-dimensional normal data, we proposed a test for testing the null hypothesis that the covariance matrix
Saowapha Chaipitak, Samruam Chongcharoen
doaj   +1 more source

A High-Dimensional Counterpart for the Ridge Estimator in Multicollinear Situations

open access: yesMathematics, 2021
The ridge regression estimator is a commonly used procedure to deal with multicollinear data. This paper proposes an estimation procedure for high-dimensional multicollinear data that can be alternatively used.
Mohammad Arashi   +3 more
doaj   +1 more source

Quasinormal Modes of a Charged Black Hole with Scalar Hair

open access: yesUniverse, 2023
Based on the five-dimensional Einstein–Maxwell theory, Bah et al. constructed a singularity-free topology star/black hole [Phys. Rev. Lett. 126, 151101 (2021)].
Wen-Di Guo, Qin Tan
doaj   +1 more source

On Asymptotic Dimension of Groups Acting on Trees [PDF]

open access: yesGeometriae Dedicata, 2004
12 ...
Alexander Dranishnikov, Gregory C. Bell
openaire   +3 more sources

Buildings have finite asymptotic dimension [PDF]

open access: yesRussian Journal of Mathematical Physics, 2009
4 pages; v2: typos corrected, to appear in Russian Journal of Mathematical Physics, special issue in honour of Nicolai Teleman v3: minor confusions of geometric/combinatorial aspects ...
Dymara, J., Schick, Thomas
openaire   +5 more sources

AdS3 holography at dimension two

open access: yesJournal of High Energy Physics, 2019
Holography can provide a microscopic interpretation of a gravitational solution as corresponding to a particular CFT state: the asymptotic expansion in gravity encodes the expectation values of operators in the dual CFT state.
Stefano Giusto   +2 more
doaj   +1 more source

On asymptotic power dimension

open access: yesTopology and its Applications, 2016
Abstract We consider the asymptotic power dimension, i.e., the asymptotic dimension with control power function. It is proved that this dimension is invariant under the coarse bi-Holder transformations. We also establish estimates for the power asymptotic dimension of the symmetric and hypersymmetric products.
Mykhailo Zarichnyi, Jacek Kucab
openaire   +2 more sources

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