[R] word stemming for corpus linguistics

[Andy Wolfe]

Hi list

On a piece of work I'm doing in corpus linguistics, using a combo of 
texts by Gries "Quantitative Corpus Linguistics with R: A Practical 
Introduction" and Jockers "Text Analysis with R for Students of 
Literature", which are both really excellent by the way, I want to stem 
or lemmatize the words so that, for e.g., 'facilitating', 'facilitated', 
and 'facilitates' all become 'facilit'.

In text mining, using a combination of the packages 'tm' and 'SnowballC' 
this is feasible, but then I am finding that working with the DTM 
(document term matrix) becomes difficult for when I want to do 
concordance (or key word in context) analysis.

So, two questions:

(1) is there a package for R version 3.3.1 that can work with corpus 
linguistics? and/ or

(2) is there a way of doing concordance analysis using the tm package as 
part of the whole text mining process?

I appreciate any help. Thanks.

Andy


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