Comparison and evaluation of statistical error models for scRNA-seq.
Comparison and evaluation of statistical error models for scRNA-seq.
复制标题
scRNA-seq的统计误差模型的比较和评估。
DOI:
10.1186/s13059-021-02584-9
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发表时间:
2022-01-18
期刊:
影响因子:
12.3
通讯作者:
Satija R
中科院分区:
文献类型:
--
作者:
Choudhary S;Satija R
Heterogeneity in single-cell RNA-seq (scRNA-seq) data is driven by multiple sources, including biological variation in cellular state as well as technical variation introduced during experimental processing. Deconvolving these effects is a key challenge for preprocessing workflows. Recent work has demonstrated the importance and utility of count models for scRNA-seq analysis, but there is a lack of consensus on which statistical distributions and parameter settings are appropriate. Here, we analyze 59 scRNA-seq datasets that span a wide range of technologies, systems, and sequencing depths in order to evaluate the performance of different error models. We find that while a Poisson error model appears appropriate for sparse datasets, we observe clear evidence of overdispersion for genes with sufficient sequencing depth in all biological systems, necessitating the use of a negative binomial model. Moreover, we find that the degree of overdispersion varies widely across datasets, systems, and gene abundances, and argues for a data-driven approach for parameter estimation. Based on these analyses, we provide a set of recommendations for modeling variation in scRNA-seq data, particularly when using generalized linear models or likelihood-based approaches for preprocessing and downstream analysis. The online version contains supplementary material available at (10.1186/s13059-021-02584-9).
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DOI:
10.1093/bioinformatics/btaa1009
发表时间:
2021-04-05
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Ahlmann-Eltze C;Huber W
通讯作者:
Huber W
影响因子:
4.6
作者:
Awazu A;Tanabe T;Kamitani M;Tezuka A;Nagano AJ
通讯作者:
Nagano AJ
影响因子:
64.8
作者:
Buenrostro JD;Wu B;Litzenburger UM;Ruff D;Gonzales ML;Snyder MP;Chang HY;Greenleaf WJ
通讯作者:
Greenleaf WJ
影响因子:
46.9
作者:
Bartosovic M;Kabbe M;Castelo-Branco G
通讯作者:
Castelo-Branco G
影响因子:
16.6
作者:
Hodge, Rebecca D.;Miller, Jeremy A.;Lein, Ed S.
通讯作者:
Lein, Ed S.