dirichlet_regression = function(counts, covariates, formula){ # Dirichlet multinomial regression to detect changes in cell frequencies # formula is not quoted, example: counts ~ condition # counts is a [samples x cell types] matrix # covariates holds additional data to use in the regression # #...
Dirichlet regression aims to predict compositional data and can be used in many fields such as ecology, health, and economy. Available in Excel using the XLSTAT software.
Fitting a Dirichlet RegressionMarco J. Maier
A generic random effects formulation for the Dirichlet negative multinomial distribution is developed together with a convenient regression parameterization. A simulation study indicates that, even when somewhat misspecified, regression models based on the Dirichlet negative multinomial distribution have smaller ...
首先我们先了解下 Dirichlet-multinomial regression 。 让我们从数学层面开始： 假设从正常组织取了sample i，正常组织本身包含了 p 种cell type，假设各种cell type出现的概率为 可能会相差很大，具有‘超散布性’ （overdispersion），也就是说观测到的不同样本中成分参数的方差会显著大于多项分布...
A: fixing1进到build之后,QA/tester要进行手动测试,也可能会写automation。但是随后会有很多的其他的fixing进入到build,可能导致之前的fixing不工作了,为了确保之前的fixing和后续的fixing都能正常工作,QA需要针对fixing1再做一次test,叫做regression test。
(2009), Clusterwise Regression Using Dirichlet Mixtures,, in Advances in Multivariate Statistical Methods, ed. A. Sengupta, World Scientific Pub- lishing Company, Singapore, pp. 305-325.C. Kang and S. Ghosal. Clusterwise regression using dirichlet mixtures. Advances in multivari- ate statistical ...
Nature Communications, 8(1): 456, Doi: 10.1038/s41467-017-00470-2. Contact We are very grateful to any questions, comments, or bugs reports; and please contact Ping Zeng via zpstat@xzhmu.edu.cn or pingzeng@umich.edu.About DPR: latent Dirichlet Process Regression for Genetic Prediction ...
Code for the analysis of the Dirichlet Process Mixture-Regression model of the Accelerated Failure Time model (Ungolo & van den Heuvel, 2023) - ungolof/AFT-DPM-R
Dirichlet regressionSimplicial regressionModel selectionUsing an approach based on the Aitchison geometry of the simplex, a Shifted-Dirichlet covariate model is obtained. Allowing the parameters to change linearly with a set of covariates, their effects......