| bi_gru | Bidirectional GRU with embedding layer |
| bi_lstm | Bidirectional LSTM with embedding layer |
| fit_model | Deep learning model fitting |
| metric_pearson_correlation | Pearson correlation coefficient |
| plot_model | visualization of the model architecture |
| predict_model | Model prediction |
| sampling_generator | Generator function |
| text_token | Tokenizing text |
| token_vector | Vectorization of tokens |