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The purpose of this project is to do a sentiment analysis on tweets about Covid-19 vaccinations in 3 classes (0-neutral, 1-negative, 2-positive).To-do this, I experimented with 4 different types of models:

1. Softmax Regression.
2. Feed-Forward neural network.
3. Bidirectional RNN neural network with LSTM & GRU cells (witout and with attention layer).
4. BERT-Base-uncased.