Question: eBayes vs. anova
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gravatar for carol white
8.3 years ago by
carol white680
European Union
carol white680 wrote:
Hello, Is there any preference for eBayes in Limma package to the anova R function? In addition to moderate t-test, is there any other feature that differentiate these two functions? Cheers, Carol
limma • 1.3k views
ADD COMMENTlink modified 8.3 years ago by Tim Triche4.2k • written 8.3 years ago by carol white680
Answer: eBayes vs. anova
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gravatar for Tim Triche
8.3 years ago by
Tim Triche4.2k
United States
Tim Triche4.2k wrote:
lmFit/mrlm output is vastly easier to work with, when you are dealing with enormous numbers of regressions, in my opinion (having forgotten this recently and used anova() on a high-dimensional mlm object from base R). note that eBayes is independent of lmFit, which is the function that most closely maps to anova(lm(foo ~ bar*baz)) in base R. If you have a reason to believe that there is a tractable distribution for the variance across all the responses you are fitting, eBayes is an enormous advantage. But it has nothing fundamentally to do with the speed and manageability advantage that comes from using lmFit() (or mrlm(), if memory serves -- a robust version). so: 1) eBayes is not analogous to anova(lm(y~x)); lmFit() and mrlm() do that job. 2) lmFit() and mrlm() have significant practical advantages over base R lm(). All of this is simply IMHO, of course. On Mon, Aug 22, 2011 at 2:42 AM, carol white <wht_crl@yahoo.com> wrote: > Hello, > Is there any preference for eBayes in Limma package to the anova R > function? In addition to moderate t-test, is there any other feature that > differentiate these two functions? > > Cheers, > > Carol > > _______________________________________________ > Bioconductor mailing list > Bioconductor@r-project.org > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: > http://news.gmane.org/gmane.science.biology.informatics.conductor > -- If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is. John von Neumann<http: www-groups.dcs.st-="" and.ac.uk="" ~history="" biographies="" von_neumann.html=""> [[alternative HTML version deleted]]
ADD COMMENTlink written 8.3 years ago by Tim Triche4.2k
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