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Treating mutual-information subjects imply The use of descriptive-statistics, and this tag will draw more attention to the niche talented statisticians to solve this challenge.
In this case I think you can use Use the tfidf. rank_document() function to score documents based on overlapping content or Use the docsim. DocSim() class to score documents on similarity using doc2vec and the GloVe word embedding model.
As I have explained I only have the "Good" documents, so that will not solve the issue, and that's why I was asking about an approach maybe for one-class classification using NLP. And labeling years of long articles by hand is far fetched.