我们假设不同样本的成分参数来自同一随机变量的不同实现,那么我们可以使用Dirichlet分布来model 成分参数分布。 Dirichlet概率分布为: 其中\alpha = (\alpha_1, ..., \alpha_p)是Dirichlet分布参数,满足\alpha_i > 0, i = 1, ..., p. 结合前面的multinomial distribution,Dirichlet-multinomial or DM 模型的...
res = dirichlet_regression(counts, covariates, counts ~ condition)#ep.pvals = dirichlet_regression(counts=ep.freq, covariates=ep.cov, formula=counts ~ condition)$pvals# Calculate regressioncounts=as.data.frame(counts)counts$counts=DR_data(counts)data=cbind(counts,covariates)fit=DirichReg(counts~co...
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
Dirichlet Regression in R 来自 ftp.sunet.se 喜欢 0 阅读量: 91 作者: MJ Maier DOI: http://CRAN.R-project.org/package=DirichletReg 被引量: 22 年份: 2015 收藏 引用 批量引用 报错 分享 全部来源 免费下载 求助全文 mirrors.ibiblio.org mirror.bjtu.edu.cn mirrors.ucr.ac.cr rpackages....
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 ...
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。
We propose a genetic association analysis using Dirichlet regression to analyze the Genetic Analysis Workshop 18 data. Clinical variables, arranged in a longitudinal data structure, are employed to fit a multistate transition model in which the transition probabilities are served as a response in the...
Here, we develop such a polygenic method, which we refer to as the latent Dirichlet process regression model (DPR). DPR is non-parametric in nature, relies on the Dirichlet process to flexibly and adaptively model the effect size distribution, and thus enjoys robust prediction performance across...
PRIFYSGOL BANGOR / BANGOR UNIVERSITY Choice of oral anticoagulant prescribed by general practices in Wales:Application of Dirichlet regression and linked dataHill-McManus, Daniel; Hughes, DyfrigBritish Journal of Clinical PharmacologyDOI:https://doi.org/10.1111/bcp.15183Published: 01/06/2022Publisher's ...