Abstract
This paper presents our work on the SemEval-2023 Task 10 Explainable Detection of Online Sexism (EDOS) using lexicon-based models. Our approach consists of three main steps: lexicon construction based on Pointwise Mutual Information (PMI) and Shapley value, lexicon augmentation using an unannotated corpus and Large Language Models (LLMs), and, lastly, lexical incorporation for Bag-of-Word (BoW) logistic regression and fine-tuning LLMs. Our results demonstrate that our Shapley approach effectively produces a high-quality lexicon. We also show that by simply counting the presence of certain words in our lexicons and comparing the count can outperform a BoW logistic regression in task B/C and fine-tuning BERT in task C. In the end, our classifier achieved F1-scores of 53.34\% and 27.31\% on the official blind test sets for tasks B and C, respectively. We, additionally, provide in-depth analysis highlighting model limitation and bias. We also present our attempts to understand the model’s behaviour based on our constructed lexicons. Our code and the resulting lexicons are open-sourced in our GitHub repository https://github.com/SirBadr/SemEval2022-Task10.- Anthology ID:
- 2023.semeval-1.4
- Volume:
- Proceedings of the 17th International Workshop on Semantic Evaluation (SemEval-2023)
- Month:
- July
- Year:
- 2023
- Address:
- Toronto, Canada
- Editors:
- Atul Kr. Ojha, A. Seza Doğruöz, Giovanni Da San Martino, Harish Tayyar Madabushi, Ritesh Kumar, Elisa Sartori
- Venue:
- SemEval
- SIG:
- SIGLEX
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 23–43
- Language:
- URL:
- https://aclanthology.org/2023.semeval-1.4
- DOI:
- 10.18653/v1/2023.semeval-1.4
- Cite (ACL):
- Pakawat Nakwijit, Mahmoud Samir, and Matthew Purver. 2023. Lexicools at SemEval-2023 Task 10: Sexism Lexicon Construction via XAI. In Proceedings of the 17th International Workshop on Semantic Evaluation (SemEval-2023), pages 23–43, Toronto, Canada. Association for Computational Linguistics.
- Cite (Informal):
- Lexicools at SemEval-2023 Task 10: Sexism Lexicon Construction via XAI (Nakwijit et al., SemEval 2023)
- PDF:
- https://preview.aclanthology.org/proper-vol2-ingestion/2023.semeval-1.4.pdf