TY JOUR TI Sentiment Analysis Based on Dictionaries: Current and Future Trends from PubMed collection KW natural language processing KW formal linguistic models KW bibliometrical analysis KW sentiment analysis KW semantic map KW long-term prediction of transformation of scientific trending topics KW PubMed database collection JO The Journal of Philological Studies AU Charnine, M.M. AU Kalinin, S.S. PY 2025 IS 10 PB INFRA-M Academic Publishing LLC.