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• W4304694501 abstract "Social media platforms significantly increase general information about disease severity and inform preventive measures among community members. To identify public opinion through tweets on the subject of Covid-19 and investigate public sentiment in the country over the period. This article proposed a novel method for sentiment analysis of coronavirus-related tweets using bidirectional encoder representations from transformers (BERT) bi-directional long short-term memory (Bi-LSTM) ensemble learning model. The proposed approach consists of two stages. In the first stage, the BERT model gains the domain knowledge with Covid-19 data and fine-tunes with sentiment word dictionary. The second stage is the Bi-LSTM model, which is used to process the data in a bi-directional way with context sequence dependency preserving to process the data and classify the sentiment. Finally, the ensemble technique combines both models to classify the sentiment into positive and negative categories. The result obtained by the proposed method is better than the state-of-the-art methods. Moreover, the proposed model efficiently understands the public opinion on the Twitter platform, which can aid in formulating, monitoring and regulating public health policies during a pandemic." @default.
• W4304694501 created "2022-10-12" @default.
• W4304694501 creator A5006316699 @default.
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• W4304694501 date "2022-10-12" @default.
• W4304694501 modified "2023-09-26" @default.
• W4304694501 title "Opinion analysis and aspect understanding during covid-19 pandemic using BERT-Bi-LSTM ensemble method" @default.
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• W4304694501 doi "https://doi.org/10.1038/s41598-022-21604-7" @default.
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