Investigating COVID-19 News Across Four Nations: A Topic Modeling and Sentiment Analysis Approach.
Piyush GhasiyaKoji OkamuraPublished in: IEEE Access (2021)
Keyphrases
- topic modeling
- sentiment analysis
- opinion mining
- text classification
- text mining
- topic models
- news articles
- sentiment classification
- text documents
- latent dirichlet allocation
- sentence level
- sentiment lexicon
- online reviews
- text corpora
- natural language processing
- information retrieval
- collaborative filtering
- social media
- bag of words
- user generated content
- product reviews
- keywords
- product features
- text categorization
- information extraction
- labeled data
- prior knowledge
- pairwise
- feature selection
- neural network