[Re] Hate Speech Detection based on Sentiment Knowledge Sharing

This repository hosts the code, data and results of our reproducibility experiment for the paper "Hate Speech Detection based on Sentiment Knowledge Sharing" by Zhou et al. (2021), as part of the ML Reproducibility Challenge 2021.

Table of Contents

• [Re] Hate Speech Detection based on Sentiment Knowledge Sharing
  • Table of Contents
  • Dependencies
  • Data
  • Training
  • Results
  • License

Dependencies

This project requires Python >= 3.8.10. After cloning the repository and creating a dedicated environment, all dependencies can be installed running pip install -r requirements.txt. Before proceeding to the training step, Glove Common Crawl Embeddings (840B Token) should be downloaded, unzipped and placed in the data directory.

Data

• SemEval data-set

  We provide the trainig- and test-set for the SemEval2019 data-set as two separate csv files df_train.csv and df_test.csv. To accomodate the original implementation, the original fields id, text and HS have already been renamed as task_idx, tweet and label.

• Davidson data-set

  We include both the original Davidson data-set davidson_data_full.csv and our 5-fold cross-validation splits, where the class field has already been renamed as label to accomodate the original implementation.

• Sentiment data-set

  We provide the training data-set used for the sentiment analysis task train_E6oV3lV.csv. The original training- and test-set are freely available on Kaggle.

• Dictionary of derogatory words

  We rely on the same dictionary of derogatory words word_all.txt compiled by the original authors.

Training

To reproduce our results for the three models SKS, -s and -sc on both the SemEval (SE) and the Davidson (DV) data-sets, the appropriate shell script should be executed from the DNN directory.

• SE_run_SKS.sh: trains the SKS model on the SE data-set using both sentiment features and category embeddings;
• SE_run_s.sh: trains the SKS model on the SE data-set ablating sentiment features;
• SE_run_sc.sh: trains the SKS model on the SE data-set ablating sentiment features and category embeddings;
• DV_run_SKS.sh: trains the SKS model on the 5-folds DV data-set using both sentiment features and category embeddings;
• DV_run_s.sh: trains the SKS model on the 5-folds DV data-set ablating sentiment features;
• DV_run_sc.sh: trains the SKS model on the 5-folds DV data-set ablating sentiment features and category embeddings.

Results

In the results folder we include the intermediate findings obtained on each model for both data-sets, the output of the grid search we ran to tune a subset of the hyperparameters (learning rate, batch size, dropout rate) and a summary of our results resutls.txt.

License

The code and the data in this repository are provided under an MIT license. For information about the license under which the original code-base distributed, please consult the original repository.