Results 41 to 50 of about 257,916 (299)

Is Benford’s Law a Universal Behavioral Theory?

Econometrics, 2015
In this paper, we consider the question and present evidence as to whether or not Benford’s exponential first significant digit (FSD) law reflects a fundamental principle behind the complex and nondeterministic nature of large-scale physical and ...
Sofia B. Villas-Boas, Qiuzi Fu, George Judge   +2 more
doaj   +1 more source

Joint Statistical Inference for the Area under the ROC Curve and Youden Index under a Density Ratio Model

Mathematics
The receiver operating characteristic (ROC) curve is a valuable statistical tool in medical research. It assesses a biomarker’s ability to distinguish between diseased and healthy individuals.
Siyan Liu, Qinglong Tian, Yukun Liu, Pengfei Li   +3 more
doaj   +1 more source

Hybrid combinations of parametric and empirical likelihoods [PDF]

Statistica Sinica, 2018
This paper develops a hybrid likelihood (HL) method based on a compromise between parametric and nonparametric likelihoods. Consider the setting of a parametric model for the distribution of an observation $Y$ with parameter $θ$. Suppose there is also an estimating function $m(\cdot,μ)$ identifying another parameter $μ$ via $E\,m(Y,μ)=0$, at the outset
Hjort, Nils Lid, McKeague, Ian W., Van Keilegom, Ingrid   +2 more
openaire   +6 more sources

Weighted Graph-Based Two-Sample Test via Empirical Likelihood

Mathematics
In network data analysis, one of the important problems is determining if two collections of networks are drawn from the same distribution. This problem can be modeled in the framework of two-sample hypothesis testing.
Xiaofeng Zhao, Mingao Yuan
doaj   +1 more source

Empirical likelihood confidence regions of the parameters in a partially single-index varying-coefficient model

Open Mathematics, 2019
In this paper, we investigate a partially single-index varying-coefficient model, and suggest two empirical log-likelihood ratio statistics for the unknown parameters in the model.
Xiang Xing, Liu Wanrong
doaj   +1 more source

Weighted empirical likelihood inference [PDF]

Statistics & Probability Letters, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +2 more sources

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source

Weak Identification Robust Tests for Subvectors Using Implied Probabilities

Entropy
This paper develops tests for hypotheses concerning subvectors of parameters in models defined by moment conditions. It is well known that conventional tests such as Wald, Likelihood-ratio and Score tests tend to over-reject when the identification is ...
Marine Carrasco, Saraswata Chaudhuri
doaj   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Robust Variable Selection via Bayesian LASSO-Composite Quantile Regression with Empirical Likelihood: A Hybrid Sampling Approach

Mathematics
Since the advent of composite quantile regression (CQR), its inherent robustness has established it as a pivotal methodology for high-dimensional data analysis.
Ruisi Nan, Jingwei Wang, Hanfang Li, Youxi Luo   +3 more
doaj   +1 more source