johnmyleswhite/ML_for_Hackers — pull request #29 by mneedham (2014-12-25 05:38:16+00:00)
Title: TDM throws a 'no applicable method for meta' error due to incorrect to_l...

...ower conversion

* Fixed by wrapping the call in 'content_transformer'
* See http://stackoverflow.com/questions/25551514/termdocumentmatrix-errors-in-r