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README
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# M3Drop - Michaelis-Menten Modelling of Dropouts for scRNASeq
This is an R package providing functions for fitting a modified Michaelis-Menten (MM) equation to the pattern of dropouts observed in a single-cell sequencing experiment. As well as the Depth-Adjusted Negative Binomial (DANB) model which is tailored for datasets quantified using unique molecular identifiers (UMIs).
Functions are provided for fitting each model as well as performing dropout-based feature selection. These can be used to reduce technical noise in downstream analyses such as clustering or pseudotime analysis.
Update 2023-02-16 :
New functions: NBumiPearsonResiduals and NBumiPearsonResidualsApprox enable the calculation of pearson residuals using the depth-adjusted negative binomial model. Pearson residuals have recently been suggested as an alternative normalization strategy for single-cell RNAseq data see: https://genomebiology.biomedcentral.com/articles/10.1186/s13059-021-02451-7#S
For comparison, the algorithm presented in Brennecke et al (2015) for detection of significantly highly variable genes is included.
## Installation :
```r
require("remotes")
install_github('tallulandrews/M3Drop')
```
OR
```r
if (!require("BiocManager", quietly = TRUE))
install.packages("BiocManager")
BiocManager::install("M3Drop")
```
Example Data:
```r
require("remotes")
install_github('tallulandrews/M3DExampleData')
```
OR
```r
if (!require("BiocManager", quietly = TRUE))
install.packages("BiocManager")
BiocManager::install("M3DExapleData")
```
Read More: DOI: 10.1101/065094
## Citation:
Amdrews, TS and Hemberg, M. (2018) M3Drop:dropout-based feature selection for scRNASeq. Bioinformatics, bty1044. https://doi.org/10.1093/bioinformatics/bty1044