Results 21 to 30 of about 19,442,486 (302)
Life, 2015 Cyanobacteria dynamically relay environmental inputs to intracellular adaptations through a coordinated adjustment of photosynthetic efficiency and carbon processing rates.
Hyun-Seob Song +5 more
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The Holdout Randomization Test for Feature Selection in Black Box Models
Journal of Computational And Graphical Statistics, 2018 We propose the holdout randomization test (HRT), an approach to feature selection using black box predictive models. The HRT is a specialized version of the conditional randomization test (CRT) that uses data splitting for feasible computation.
Wesley Tansey +4 more
semanticscholar +1 more source
Randomization Tests that Condition on Non-Categorical Covariate Balance
Journal of Causal Inference, 2019 A benefit of randomized experiments is that covariate distributions of treatment and control groups are balanced on average, resulting in simple unbiased estimators for treatment effects.
Branson Zach, Miratrix Luke W.
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Cautionary note on calculating standardized effect size (SES) in randomization test
Community Ecology, 2018 In community ecology, randomization tests with problem specific test statistics (e.g., nestedness, functional diversity, etc.) are often applied. Researchers in such studies may want not only to detect the significant departure from randomness, but also ...
Z. Botta‐Dukát
semanticscholar +1 more source
International Journal of Epidemiology, 2015 Background: The number of Mendelian randomization analyses including large numbers of genetic variants is rapidly increasing. This is due to the proliferation of genome-wide association studies, and the desire to obtain more precise estimates of causal ...
J. Bowden, G. Davey Smith, S. Burgess
semanticscholar +1 more source
Randomization test of mean is compuationally inaccessible when the number of groups exceeds two [PDF]
Tutorials in Quantitative Methods for Psychology, 2011 With the advent of fast computers, the randomization test of mean (also called the permutation test) received some attention in the recent years. Here we show that the randomization test is possible only for two-group design; comparing three groups ...
Denis Cousineau
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A simulation study for comparing testing statistics in response-adaptive randomization
BMC Medical Research Methodology, 2010 Background Response-adaptive randomizations are able to assign more patients in a comparative clinical trial to the tentatively better treatment. However, due to the adaptation in patient allocation, the samples to be compared are no longer independent ...
Lee J Jack, Gu Xuemin
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Interpreting findings from Mendelian randomization using the MR-Egger method
European Journal of Epidemiology, 2017 Mendelian randomization-Egger (MR-Egger) is an analysis method for Mendelian randomization using summarized genetic data. MR-Egger consists of three parts: (1) a test for directional pleiotropy, (2) a test for a causal effect, and (3) an estimate of the ...
S. Burgess, S. Thompson
semanticscholar +1 more source
FoodsUnscrupulous merchants sell the mold-damaged Citri Reticulatae Pericarpium (CRP) after removing the mold. In this study, an accurate and non-destructive strategy was developed for the discrimination of mold-damaged CRPs using portable near-infrared (NIR)
Huizhen Tan +5 more
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Causal effects of gut microbiota on appendicitis: a two-sample Mendelian randomization study
Frontiers in Cellular and Infection Microbiology, 2023 BackgroundPrevious research has posited a potential correlation between the gut microbiota and the onset of appendicitis; however, the precise causal connection between appendicitis and the gut microbiota remains an unresolved and contentious issue ...
Zehui Wang +7 more
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