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Pokhrel, S. , Somasiri, N. , Jeyavadhanam, R. , Ganesan, S.. "Web Data Scraping Technology Using Term Frequency Inverse Document Frequency to Enhance the Big Data Quality on Sentiment Analysis". World Academy of Science, Engineering and Technology, Open Science Index 203, International Journal of Electrical and Computer Engineering (2023), 17(11), 300 - 307.