covid-twitter-bert-v2-struth

covid-twitter-bert-v2-struth

This model is a fine-tuned version of digitalepidemiologylab/covid-twitter-bert-v2 on the COVID-19 Fake News Dataset NLP by Elvin Aghammadzada. It achieves the following results on the evaluation set:

• Loss: 0.1171
• Accuracy: 0.9662
• Precision: 0.9813
• Recall: 0.9493
• F1: 0.9650

Model description

This model is built on the work on Digital Epidemiology Lab and their COVID Twitter BERT model. We have extended their model by training it for Sequence Classification tasks. This is part of a wider project for True/Fake news by the Struth Social Team.

Intended uses & limitations

This model is intended to be used for the classification of Tweets as either true or fake (0 or 1). The model can also be used for relatively complex statements regarding COVID-19.

A known limitation of this model is basic statements (e.g. COVID is a hoax) as the Tweets used to train the model are not simplistic in nature.

Training and evaluation data

Training and Testing data was split 80:20 for the results listed above.

Training/Testing Set:

• Samples Total: 8437
• Samples Train: 6749
• Samples Test: 1687

Evaluation Set:

• Samples Total: 100

Training procedure

1. Data is preprocessed through custom scripts
2. Data is passed to the model training script
3. Training is conducted
4. Best model is retrieved at end of training and uploaded to the Hub

Training hyperparameters

The following hyperparameters were used during training:

• learning_rate: 2e-05
• train_batch_size: 16
• eval_batch_size: 16
• seed: 42
• optimizer: Adam with betas=(0.9,0.999) and epsilon=1e-08
• lr_scheduler_type: linear
• num_epochs: 20

Training results

Framework versions

• Transformers 4.22.2
• Pytorch 1.12.1+cu113
• Datasets 2.5.1
• Tokenizers 0.12.1