Results 201 to 210 of about 91,156 (303)

Distribution of Toxic and Essential Elements in Autopsy Organs of Subjects Living in South-Eastern Poland. [PDF]

Int J Mol Sci
Flieger W, Niedzielski P, Flieger M, Wojciechowska Z, Proch A, Proch J, Forma A, Torbicz A, Majerek D, Teresiński G, Baj J, Dzierżyński E, Flieger J.   +12 more
europepmc   +1 more source

Miners' Reward Elasticity and Stability of Competing Proof‐of‐Work Cryptocurrencies

International Economic Review, EarlyView.
ABSTRACT Proof‐of‐Work cryptocurrencies employ miners to sustain the system through algorithmic reward adjustments. We develop a stochastic model of the multicurrency mining and identify conditions for stable transaction speeds. Bitcoin's algorithm requires hash supply elasticity <$<$1 for stability, while ASERT remains stable for any elasticity and ...
Kohei Kawaguchi, Junpei Komiyama, Shunya Noda   +2 more
wiley   +1 more source

A KL-divergence-based test for elliptical distribution. [PDF]

J Nonparametr Stat
Tang Y, Ma Y, Li B.
europepmc   +1 more source

Specification Tests for Jump‐Diffusion Models Based on the Characteristic Function

International Statistical Review, EarlyView.
Summary Goodness‐of‐fit tests are suggested for several popular jump‐diffusion processes. The suggested test statistics utilise the marginal characteristic function of the model and its L2‐type discrepancy from an empirical counterpart. Model parameters are estimated either by minimising the aforementioned L2‐type discrepancy or by maximum likelihood ...
Gerrit Lodewicus Grobler, Denis Belomestny, Simos George Meintanis, Emanuele Taufer   +3 more
wiley   +1 more source

Efficient EM Estimation for the Pogit Model via Polya-Gamma Augmentation. [PDF]

Entropy (Basel)
Gutiérrez I, Ramírez S, Jofré L.
europepmc   +1 more source

Bias Adjustment for Mean Squared Error Estimation in M‐Quantile Models for Small Area Estimation

International Statistical Review, EarlyView.
Summary M‐quantile (MQ) regression provides a robust and flexible alternative to mixed models for small area estimation. However, several theoretical aspects remain underexplored. In this paper, a parametric bootstrap method is proposed to approximate the distributions of area‐specific MQ coefficients and applied to adjust the bias in the mean squared ...
María Bugallo, Domingo Morales, Nicola Salvati, Francesco Schirripa Spagnolo   +3 more
wiley   +1 more source

Incorporating Auxiliary Variables to Improve the Efficiency of Time-Varying Treatment Effect Estimation. [PDF]

J Am Stat Assoc
Shi J, Wu Z, Dempsey W.
europepmc   +1 more source

The Random Power Function for Tests Based on Pivotal Quantities

International Statistical Review, EarlyView.
Summary In clinical trials planning, evaluation of the probability of success of an experiment is of central interest, for instance, in sample size determination. This assessment typically involves analyses of the power function of a test on a parameter of interest, such as a relevant treatment effect.
Fulvio De Santis, Stefania Gubbiotti, Francesco Mariani   +2 more
wiley   +1 more source

Two-stage estimators for spatial confounding with point-referenced data. [PDF]

Biometrics
Wiecha N, Hoppin JA, Reich BJ.
europepmc   +1 more source

Goodness‐of‐Fit Tests for Positive Quadrant Dependence

International Statistical Review, EarlyView.
Summary When two random variables are positive quadrant dependent (PQD), they are more likely to assume small (or large) values simultaneously compared with when the random variables are independent. This dependence structure is of interest in many areas, including finance, actuarial science and engineering.
Chuan‐Fa Tang, Joshua M. Tebbs
wiley   +1 more source