What is the point of gene set or pathway enrichment analysis?

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Gene set or pathway enrichment analysis is a computational method that determines whether an a priori defined set of genes shows statistically significant, concordant differences between two biological states. There are many different ways to perform gene set or pathway enrichment analysis, from hypergeometric distribution tests to bootstrap based approaches. Gene set or pathway enrichment

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5 Useful R Commands for Working with Big Data

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5 useful R commands for working with big data 1. View a large object (big RData file called object for example) in a manner similar to less in command line. page(object, method=”print”) 2. Listing top n objects in memory. rev(sort(sapply(ls(envir=globalenv()), function(x) { object.size(get(x,env=globalenv())) })))[1:n] 3. Remove all objects except for those contained in a set

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