Results 31 to 40 of about 46,298 (299)

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

Bernoulli, 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

Empirical Likelihood Ratio Tests for Homogeneity of Multiple Populations in the Presence of Auxiliary Information

Mathematics, 2022
The empirical likelihood ratio test (ELRT) statistic is constructed for testing the homogeneity of several nonparametric populations in the presence of some auxiliary information. It is shown—under some regularity conditions and under the null hypothesis
Ronghuo Wu, Yongsong Qin
doaj   +1 more source

Generalized spectral tests for the martingale difference hypothesis [PDF]

, 2006
This article proposes a test for the martingale difference hypothesis (MDH) using dependence measures related to the characteristic function. The MDH typically has been tested using the sample autocorrelations or in the spectral domain using the ...
Velasco Gómez, Carlos, Carlos Velasco, J. Carlos Escanciano, Velasco, Carlos, Escanciano, Juan Carlos   +4 more
core   +1 more source

Detection of Nonstationary Events in Motor Signals Using Nonparametric Statistical Hypothesis Testing

IEEE Access
This work presents a lightweight statistical method for detecting nonstationarities in motor current signals, aiming to improve the diagnosis of transient events such as sudden load changes or inverter disturbances.
Eduardo Vaz Fagundes Rech, Levy Ely De Lacerda De Oliveira, Wilson Cesar Sant'Ana   +2 more
doaj   +1 more source

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

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

Molecular 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, Lucrezia De Santis, Bret M. Stephens, Vincent Bernard, Jörg C. Kalff, Lara Braun, Phillipp Leyendecker, Johannes Röttgen, Daniel Weissinger, Anirban Maitra, Paola A. Guerrero, Alexander Semaan   +11 more
wiley   +1 more source

A Consistent Nonparametric Test for Granger Non-Causality Based on the Transfer Entropy

Entropy, 2020
To date, testing for Granger non-causality using kernel density-based nonparametric estimates of the transfer entropy has been hindered by the intractability of the asymptotic distribution of the estimators. We overcome this by shifting from the transfer
Cees Diks, Hao Fang
doaj   +1 more source

A nonparametric test of a strong leverage hypothesis [PDF]

Journal of Econometrics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Oliver Linton, Yoon-Jae Whang, Yu-Min Yen   +2 more
openaire   +5 more sources

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

Molecular 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, Isabel Vogel, Sina Nokodian, Johanna Moeller, Antonia Blechschmidt, Vicky Hecht, Vanessa Kuentzel, Katharina Thiedig, Melissa Schwab, Oliver Schilling, Holger Bronger, Marion Kiechle, Viktor Magdolen, Tobias Dreyer   +13 more
wiley   +1 more source

Review about the Permutation Approach in Hypothesis Testing

Mathematics
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, Getnet Melak Assegie, Kamila Trzcinska   +2 more
doaj   +1 more source