I have long been out of the NLP game, but I am curious to get back in. I wanted to know about modern techniques for doing automated writing evaluation of English texts. I want to take essay-form content from non-native speakers and write an application to assess how well-written it is.
I left the question vague on purpose, because I really want to read up on the topic and it has been a while. Does anyone have any pointers to good books or articles on this domain?