what are the research gaps in applying sentiment analysis on medical big data shared data over medical social media ?
Read current articles on Big Data from IEEE, Springer , Elsevi....
One of the big issue is to create a sentiment lexicon that could reflect correct sentiment scores of medical-related words, as SentiWordNet like lexicons contain inaccurate scores for domain specific words. Following articles may assist you
1.
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0140204
or
https://www.researchgate.net/publication/283068376_A_Unified_Framework_for_Creating_Domain_Dependent_Polarity_Lexicons_from_User_Generated_Reviews?ev=prf_pub
2. https://www.researchgate.net/publication/273727879_Medical_opinion_lexicon_an_incremental_model_for_mining_health_reviews
3. https://www.researchgate.net/publication/283318837_SUBJECTIVITY_LEXICON_CONSTRUCTION_FOR_MINING_DRUG_REVIEWS?ev=prf_pub
Article A Unified Framework for Creating Domain Dependent Polarity L...
Article Medical opinion lexicon: An incremental model for mining hea...
Article Subjectivity lexicon construction for mining drug reviews
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