
LIST_LEXICONS:
  LM: https://www3.nd.edu/~mcdonald/Word_Lists.html
    > Tim Loughran and Bill McDonald, 2011, "When is a Liability not a Liability? Textual Analysis, Dictionaries, and 10-Ks", Journal of Finance, 66:1, 35-65

  HENRY: paper pp. 387
    > Elaine Henry. (2008). "Are Investors Influenced by the Way Earnings Press Releases are Written?", The Journal of Business Communication, 4 (45), 363-407

  GI: http://www.wjh.harvard.edu/~inquirer/spreadsheet_guide.htm
    > Harvard IV-4 dictionary + Lasswell value dictionary

  FEEL: http://www.lirmm.fr/~abdaoui/FEEL
    > Amine Abdaoui, Jérôme Azé, Sandra Bringay et Pascal Poncelet. "FEEL: French Expanded Emotion Lexicon". Language Resources and Evaluation, LRE 2016, pp. 1-23

LIST_VALENCE_SHIFTERS: R package lexicon

USNEWS: https://www.crowdflower.com/data-for-everyone ("Economic News Article Tone and Relevance")

EPU: http://www.policyuncertainty.com/us_monthly.html

