Results 11 to 20 of about 6,086,701 (288)

Determining the dimension of the central subspace and central mean subspace

open access: yesBiometrika, 2008
The central subspace and central mean subspace are two important targets of sufficient dimension reduction. We propose a weighted chi-squared test to determine their dimensions based on matrices whose column spaces are exactly equal to the central ...
Peng Zeng
core   +3 more sources

MOMENT KERNELS FOR T-CENTRAL SUBSPACE [PDF]

open access: yes, 2020
The T-central subspace allows one to perform sufficient dimension reduction for any statistical functional of interest. We propose a general estimator using a third moment kernel to estimate the T-central subspace.
Ren, Weihang
core   +2 more sources

MethyAnno: An Interpretable Automated Annotation Method Leveraging Multi-Scale Information and Metric Learning Framework for scDNAm Data. [PDF]

open access: yesAdv Sci (Weinh)
MethyAnno enables robust and interpretable annotation of single‐cell DNA methylation data by integrating multi‐scale epigenetic information, bidirectional cross‐attention, and prototype‐based metric learning. The framework resolves rare and novel cell types across datasets while revealing cell‐type‐specific epigenetic signatures associated with disease
Jia Y, Li S, Tang S, Gu K, Chen S.
europepmc   +2 more sources

Transformed central quantile subspace [PDF]

open access: yesStatistics, 2021
arXiv admin note: text overlap with arXiv:1906 ...
openaire   +2 more sources

Subspace discovery for video anomaly detection [PDF]

open access: yes, 2010
PhDIn automated video surveillance anomaly detection is a challenging task. We address this task as a novelty detection problem where pattern description is limited and labelling information is available only for a small sample of normal instances.
Tziakos, Ioannis
core   +4 more sources

Central subspaces review: methods and applications

open access: yesStatistics Surveys, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Rodrigues, SA, Huggins, R, Liquet, B
openaire   +2 more sources

Central quantile subspace [PDF]

open access: yesStatistics and Computing, 2019
Quantile regression (QR) is becoming increasingly popular due to its relevance in many scientific investigations. There is a great amount of work about linear and nonlinear QR models. Specifically, nonparametric estimation of the conditional quantiles received particular attention, due to its model flexibility.
openaire   +3 more sources

CS Decomposition Based Bayesian Subspace Estimation [PDF]

open access: yes, 2012
In numerous applications, it is required to estimate the principal subspace of the data, possibly from a very limited number of samples. Additionally, it often occurs that some rough knowledge about this subspace is available and could be used to improve
Besson, Olivier   +2 more
core   +1 more source

Central Subspaces of Banach Spaces

open access: yesJournal of Approximation Theory, 2000
Let \(X\) be a Banach space. A subspace \(Y \subset X\) is called a central subspace (\(C\)-subspace) of \(X\) if every finite family of closed balls with centers in \(Y\) that intersects in \(X\) also intersects in \(Y\). In particular \(X\) is said to be generalized center (GC) if and only if \(X\) is a \(C\)-subspace of \(X^{**}\).
Bandyopadhyay, Pradipta, Rao, T.S.S.R.K.
openaire   +1 more source

Intersection Properties of Balls in Banach Spaces

open access: yesJournal of Function Spaces and Applications, 2013
We introduce a weaker notion of central subspace called almost central subspace, and we study Banach spaces that belong to the class (GC), introduced by Veselý (1997). In particular, we prove that if is an almost central subspace of a Banach space such
C. R. Jayanarayanan
doaj   +1 more source

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