1. [1] Janome(ja). https://mocobeta.github.io/janome/.
2. [2] Japanese Sentiment Polarity Dictionary. https://www.nlp.ecei.tohoku.ac.jp/. Inui-Suzuki Lab. in Tohoku University.
3. [3] Pretrained Japanese BERT models. https://github.com/cl-tohoku/bert-japanese. Tohoku NLP Group Github Repositoris.
4. [4] Rakuten Travel. https://travel.rakuten.com/.
5. [5] TripAdvisor. https://www.tripadvisor.jp/.