[BioC] normalization method & dispersion estimation RNA-seq data

Ryan C. Thompson rct at thompsonclan.org
Mon Nov 26 22:37:16 CET 2012


Anyway, to address the question of using DSS to estimate dispersions and 
then plugging those dispersions into an edgeR DGEList object, this 
should be perfectly possible, with one LARGE caveat: DSS only supports 
the simplest possible experimental design: two-classes, unpaired 
samples. If your experiment fits this design, you can use DSS to 
estimate dispersions and copy those dispersions into a DGEList object 
and use edgeR's significance tests. However, doing so would not 
necessarily be useful because, as discussed, the DSS paper shows that 
doing so would give basically the same results as using the waldTest 
function of DSS.

On 11/26/2012 09:30 AM, aec [guest] wrote:
> Is it possible to adopt the CQN normalization method (Hansen, 2012) as an option of the edgeR function 'calcNormFactors' ? And the new shrinkage estimator for dispersion (Wu, 2012) that seems to be better than the currently used by edgeR ?
>
> thanks,
>
>
>   -- output of sessionInfo():
>
> any
>
> --
> Sent via the guest posting facility at bioconductor.org.
>
> _______________________________________________
> Bioconductor mailing list
> Bioconductor at r-project.org
> https://stat.ethz.ch/mailman/listinfo/bioconductor
> Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor



More information about the Bioconductor mailing list