Results 71 to 80 of about 149,559 (301)

A vine copula mixed effect model for trivariate meta-analysis of diagnostic test accuracy studies accounting for disease prevalence [PDF]

, 2015
A bivariate copula mixed model has been recently proposed to synthesize diagnostic test accuracy studies and it has been shown that it is superior to the standard generalized linear mixed model in this context.
Aas K, Aristidis K Nikoloulopoulos, Brenner H, Chu H, Chu H, Demidenko E, Genest C, Genest C, Genest C, Hamza TH, Hoyer A, Hua L, Hult H, Joe H, Joe H, Joe H, Joe H, Joe H, Karageorgopoulos DE, Kurowicka D, Kuss O, Leeflang MMG, Leeflang MMG, Ma X, Mavridis D, McNeil AJ, Nash JC, Nelsen RB, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Nikoloulopoulos AK, Panagiotelis A, Paul M, Serfling RJ, Shen C, Stroud AH, Vuong QH, Ye Y   +41 more
core   +2 more sources

occumb: An R package for site occupancy modeling of eDNA metabarcoding data

Population Ecology, EarlyView.
This study introduces a new R package, occumb, for the convenient application of site occupancy modeling using environmental DNA (eDNA) metabarcoding data. We outline a data analysis workflow, including data setup, model fitting, model assessment, and comparison of potential study settings based on model predictions, all of which can be performed using
Keiichi Fukaya, Yuta Hasebe
wiley   +1 more source

bayesint: A Python Package for Calculating Bayesian Credible Intervals of Ratios of Beta Distributions

Journal of Open Research Software, 2021
We present 'bayesint', a Python package for calculating Bayesian credible intervals for ratios of two independent beta distributions such as are used when considering binomial data. Such data could be found in counts of events in medical diagnostic tests,
M. Bekker-Nielsen Dunbar, Thomas J. R. Finnie   +1 more
doaj   +1 more source

Priors for Random Count Matrices Derived from a Family of Negative Binomial Processes

, 2015
We define a family of probability distributions for random count matrices with a potentially unbounded number of rows and columns. The three distributions we consider are derived from the gamma-Poisson, gamma-negative binomial, and beta-negative binomial
Padilla, Oscar Hernan Madrid, Scott, James G., Zhou, Mingyuan   +2 more
core   +2 more sources

A mixed effect model for bivariate meta-analysis of diagnostic test accuracy studies using a copula representation of the random effects distribution [PDF]

, 2015
Diagnostic test accuracy studies typically report the number of true positives, false positives, true negatives and false negatives. There usually exists a negative association between the number of true positives and true negatives, because studies that
Arends, Aristidis K. Nikoloulopoulos, Brechmann, Chu, Chu, Chu, Chu, Demidenko, Genest, Genest, Genest, Genest, Glas, Hamza, Harbord, Harbord, Heffernan, Hua, Hult, Jackson, Jackson, Joe, Joe, Joe, Joe, Kurowicka, Kuss, Lee, Ma, Mavridis, Mavridis, Nash, Nelsen, Nikoloulopoulos, Nikoloulopoulos, Nikoloulopoulos, Nikoloulopoulos, Nikoloulopoulos, Nikoloulopoulos, Normand, Paul, Reitsma, Riley R, Rutter, Rücker, Sarmanov, Scheidler, Serfling, Shen, Sklar, Stroud, Vuong   +51 more
core   +2 more sources

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

Population Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva, João Hemerson de Sousa, Adriana Josefa da Rocha, Manuella Feitosa Leal, Lucas Ariel de Sousa Aguiar, Tamaris Gimenez Pinheiro, Edson Lourenço da Silva   +6 more
wiley   +1 more source

Statistical analysis of progressively first-failure-censored data via beta-binomial removals

AIMS Mathematics, 2023
Progressive first-failure censoring has been widely-used in practice when the experimenter desires to remove some groups of test units before the first-failure is observed in all groups.
A. Elshahhat, V. Sharma, Heba S. Mohammed   +2 more
semanticscholar   +1 more source

General state-space population dynamics model for Bayesian stock assessment [PDF]

, 2015
201
Blomstedt, Paul A., Kuikka, O. Sakari, Kuparinen, Anna K., Mäntyniemi, Samu H. P., Perälä, Tommi A., Pulkkinen, Henni P., Rincon, Margarita Maria, Vanhatalo, Jarno P., Whitlock, Rebecca E.   +8 more
core   +1 more source

Infection Models for Pine Wilt Disease on the Basis of Vector Behaviors

Population Ecology, EarlyView.
Infection models for pine wilt disease without vector density were built to estimate the transmission coefficient of the pathogenic nematode. The models successfully simulated the annual change in the density of infected trees for four pine stands. ABSTRACT Pine wilt disease is caused by the pinewood nematode (Bursaphelenchus xylophilus Steiner et ...
Katsumi Togashi
wiley   +1 more source

Modelling Coronavirus and Larvae Pyrausta Data: A Discrete Binomial Exponential II Distribution with Properties, Classical and Bayesian Estimation

Axioms, 2022
In this article, we propose the discrete version of the binomial exponential II distribution for modelling count data. Some of its statistical properties including hazard rate function, mode, moments, skewness, kurtosis, and index of dispersion are ...
Mohamed S. Eliwa, Abhishek Tyagi, Bader Almohaimeed, Mahmoud El-Morshedy   +3 more
doaj   +1 more source