Build keyword extraction for document

[ezmiller]

Resources:

• Excellent survey: https://bdewilde.github.io/blog/2014/09/23/intro-to-automatic-keyphrase-extraction/
• Also a good survey: http://textminingonline.com/getting-started-with-keyword-extraction
• https://moz.com/devblog/machine-learning-approach-to-keyword-extraction/

Algorithms:

• TF-IDF: https://en.wikipedia.org/wiki/Tf%E2%80%93idf
• TextRank: Rada Mihalcea and Paul Tarau (July 2004). TextRank: Bringing Order into Texts (PDF). Proceedings of the Conference on Empirical Methods in Natural Language Processing (EMNLP 2004). Barcelona, Spain.