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Toxicity Target Classification

Toxicity Target Classification is a model that classifies if a given text is targeted or not.

This BERT model is a fine-tuned version of neuralmind/bert-base-portuguese-cased on the OLID-BR dataset.

Overview#

Input: Text in Brazilian Portuguese

Output: Binary classification (targeted or untargeted)

Usage#

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from transformers import AutoTokenizer, AutoModelForSequenceClassification

tokenizer = AutoTokenizer.from_pretrained("dougtrajano/toxicity-target-classification")

model = AutoModelForSequenceClassification.from_pretrained("dougtrajano/toxicity-target-classification")

Limitations and bias#

The following factors may degrade the model’s performance.

Text Language: The model was trained on Brazilian Portuguese texts, so it may not work well with Portuguese dialects.

Text Origin: The model was trained on texts from social media and a few texts from other sources, so it may not work well on other types of texts.

Trade-offs#

Sometimes models exhibit performance issues under particular circumstances. In this section, we'll discuss situations in which you might discover that the model performs less than optimally, and should plan accordingly.

Text Length: The model was fine-tuned on texts with a word count between 1 and 178 words (average of 18 words). It may give poor results on texts with a word count outside this range.

Performance#

The model was evaluated on the test set of the OLID-BR dataset.

Accuracy: 0.6864

Precision: 0.6882

Recall: 0.6864

F1-Score: 0.6872

Class Precision Recall F1-Score Support
UNTARGETED 0.4912 0.5011 0.4961 443
TARGETED INSULT 0.7759 0.7688 0.7723 995

Training procedure#

Training hyperparameters#

The following hyperparameters were used during training:

  • learning_rate: 4.174021560583183e-05
  • train_batch_size: 8
  • eval_batch_size: 8
  • seed: 1993
  • optimizer: Adam with betas=(0.9360294728287728,0.9974781444436187) and epsilon=8.016624612627008e-07
  • lr_scheduler_type: linear
  • num_epochs: 30
  • label_smoothing_factor: 0.09936835309930625

Framework versions#

  • Transformers 4.26.0
  • Pytorch 1.10.2+cu113
  • Datasets 2.9.0
  • Tokenizers 0.13.2

Provide Feedback#

If you have any feedback on this model, please open an issue on GitHub.

Last update: February 20, 2023