@article{twittersentimentanalysislexiconmethod,
  title = {Twitter Sentiment Analysis: Lexicon Method, Machine Learning Method and Their Combination},
  author = {Olga Kolchyna and Tharsis T. P. Souza and Philip Treleaven and Tomaso Aste},
  year = {2015},
  eprint = {1507.00955},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1507.00955v3},
}