Results 1 to 10 of about 202,812,532 (248)

Numerosity Comparison, Estimation and Proportion Estimation Abilities May Predict Numeracy and Cognitive Reflection in Adults [PDF]

open access: yesFrontiers in Human Neuroscience, 2021
This study explores whether and how different tasks associated with approximate number system (ANS) ability are related to numeracy and cognitive reflection in adults.
Midori Tokita, Sumire Hirota
doaj   +2 more sources

An Efficient Mixed Randomized Response Model for Sensitive Characteristic in Sample Survey

open access: yesRevstat Statistical Journal, 2021
This paper proposes an efficient mixed randomized response (RR) model for estimating the proportion of individuals who possess to the sensitive attribute in the given population under both the conditions completely truthful reporting as well as less ...
Amod Kumar   +2 more
doaj   +1 more source

Decosus: An R Framework for Universal Integration of Cell Proportion Estimation Methods

open access: yesFrontiers in Genetics, 2022
The assessment of the cellular heterogeneity and abundance in bulk tissue samples is essential for characterising cellular and organismal states.
Chinedu A. Anene   +6 more
doaj   +1 more source

Towards accurate estimation of the proportion of true null hypotheses in multiple testing. [PDF]

open access: yesPLoS ONE, 2011
BACKGROUND: Biomedical researchers are now often faced with situations where it is necessary to test a large number of hypotheses simultaneously, eg, in comparative gene expression studies using high-throughput microarray technology.
Shu-Dong Zhang
doaj   +1 more source

Cardinality Estimation Method for Multitable JOIN Query Optimization [PDF]

open access: yesJisuanji gongcheng, 2022
Cardinality estimation is one of the important means to optimize database multitable JOIN queries.When the cardinality of a data table with a large number of data is estimated, data sampling is often used to obtain smaller samples to estimate the data ...
QIAN Wenyuan, JING Yinan, WANG Xiaoyang, WU Zhenhuan
doaj   +1 more source

Testing the “RCT augmentation” methodology: A trial simulation study to guide the broadening of trials eligibility criteria and inform on effectiveness

open access: yesContemporary Clinical Trials Communications, 2023
Background: Exclusion criteria that are treatment effect modifiers (TEM) decrease RCTs results generalisability and the potentials of effectiveness estimation.
Clementine Nordon   +6 more
doaj   +1 more source

Estimation of Some Proportion in a Clustered Population

open access: yesNonlinear Analysis, 2009
The aim of this paper is to show that the traditional design-based estimator for the proportion of population units, associated with at least one subunit having an attribute of interest using the two-stage sampling design, is biased.
D. Krapavickaitė
doaj   +1 more source

Hierarchical Bayesian Modeling and Randomized Response Method for Inferring the Sensitive-Nature Proportion

open access: yesMathematics, 2021
In this study, a new three-statement randomized response estimation method is proposed to improve the drawback that the maximum likelihood estimation method could generate a negative value to estimate the sensitive-nature proportion (SNP) when its true ...
Hua Xin   +3 more
doaj   +1 more source

Estimation of the Mixed Gamma Distributions Parameters Based on Censored Life test Data [PDF]

open access: yesThe Egyptian Statistical Journal, 1989
This work concerns with the estimation of scale parameters and mixture proportion of two gamma distributions. Using maximum likelihood and weighted least. Squares methods the estimation is carried out when the data are ungrouped and censored. A simulated
E.M Shoukry, Abd-Elghani M.
doaj   +1 more source

Estimation of the proportion of genetic variance explained by molecular markers

open access: yesGenetics and Molecular Biology, 1998
Estimation of the proportion of genetic variance explained by molecular markers (p) plays an important role in basic studies of quantitative traits, as well as in marker-assisted selection (MAS), if the selection index proposed by Lande and Thompson ...
Eduardo Bearzoti, Roland Vencovsky
doaj   +1 more source

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