Results 41 to 50 of about 158,439 (301)

The abstract of doctoral dissertation ‘Some research on hypothesis testing and nonparametric variable screening problems for high dimensional data’

open access: yesStatistical Theory and Related Fields, 2020
In this thesis, we construct test statistic for association test and independence test in high dimension, respectively, and study the corresponding theoretical properties under some regularity conditions.
Yongshuai Chen, Hengjian Cui
doaj   +1 more source

Statistical Tests of Symbolic Dynamics

open access: yesMathematics, 2021
A novel general method for constructing nonparametric hypotheses tests based on the field of symbolic analysis is introduced in this paper. Several existing tests based on symbolic entropy that have been used for testing central hypotheses in several ...
Fernando López   +3 more
doaj   +1 more source

Nonparametric Bayes classification and hypothesis testing on manifolds

open access: yesJournal of Multivariate Analysis, 2012
Our first focus is prediction of a categorical response variable using features that lie on a general manifold. For example, the manifold may correspond to the surface of a hypersphere. We propose a general kernel mixture model for the joint distribution of the response and predictors, with the kernel expressed in product form and dependence induced ...
Bhattacharya, Abhishek, Dunson, David
openaire   +2 more sources

Minimax Nonparametric Hypothesis Testing: The Case of an Inhomogeneous Alternative [PDF]

open access: yesBernoulli, 1999
The aim of the paper is to study the problem of testing a simple hypothesis for a non-parametric ``signal + white-noise'' model. Under the null hypothesis it is assumed that the ``signal'' is completely specified (e.g., that no signal is present). This hypothesis is tested against a composite alternative where the underlying function (the signal) is ...
Lepski, Oleg V., Spokoiny, Vladimir G.
openaire   +3 more sources

Pre‐analytical optimization of cell‐free DNA and extracellular vesicle‐derived DNA for mutation detection in liquid biopsies

open access: yesMolecular Oncology, EarlyView.
Pre‐analytical handling critically determines liquid biopsy performance. This study defines practical best‐practice conditions for cell‐free DNA (cfDNA) and extracellular vesicle–derived DNA (evDNA), showing how processing time, storage conditions, tube type, and plasma input volume affect DNA integrity and mutation detection.
Jonas Dohmen   +11 more
wiley   +1 more source

Review about the Permutation Approach in Hypothesis Testing

open access: yesMathematics
Today, permutation tests represent a powerful and increasingly widespread tool of statistical inference for hypothesis-testing problems. To the best of our knowledge, a review of the application of permutation tests for complex data in practical data ...
Stefano Bonnini   +2 more
doaj   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch   +13 more
wiley   +1 more source

Simultaneous statistical inference for epigenetic data. [PDF]

open access: yesPLoS ONE, 2015
Epigenetic research leads to complex data structures. Since parametric model assumptions for the distribution of epigenetic data are hard to verify we introduce in the present work a nonparametric statistical framework for two-group comparisons ...
Konstantin Schildknecht   +2 more
doaj   +1 more source

A nonparametric two-sample hypothesis testing problem for random dot product graphs [PDF]

open access: yes, 2015
We consider the problem of testing whether two finite-dimensional random dot product graphs have generating latent positions that are independently drawn from the same distribution, or distributions that are related via scaling or projection.
Athreya, Avanti   +4 more
core  

On the Decreasing Power of Kernel and Distance based Nonparametric Hypothesis Tests in High Dimensions

open access: yes, 2014
This paper is about two related decision theoretic problems, nonparametric two-sample testing and independence testing. There is a belief that two recently proposed solutions, based on kernels and distances between pairs of points, behave well in high ...
Póczos, Barnabás   +4 more
core   +1 more source

Home - About - Disclaimer - Privacy