how to use stemDocument in R?

Question

update:

Thanks for help. Check comments. Because of package version, I delete the tolower and it works. I just need to find another way to make it lower.

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Answer 1

I had the same problem.

If you look at the arguments for stemDocuments you can specify the language of stemming. I found by specifying "English" it solved the problem for me.

stemDocument(language="english")