Evaluating Bias and Fairness in Gender-Neutral Pretrained Vision-and-Language Models
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Pretrained machine learning models are known to perpetuate and even amplify existing biases in data, which can result in unfair outcomes that ultimately impact user experience. Therefore, it is crucial to understand the mechanisms behind those prejudicial biases to ensure that model performance does not result in discriminatory behaviour toward certain groups or populations. In this work, we define gender bias as our case study. We quantify bias amplification in pretraining and after fine-tuning on three families of vision-and-language models. We investigate the connection, if any, between the two learning stages, and evaluate how bias amplification reflects on model performance. Overall, we find that bias amplification in pretraining and after fine-tuning are independent. We then examine the effect of continued pretraining on gender-neutral data, finding that this reduces group disparities, i.e., promotes fairness, on VQAv2 and retrieval tasks without significantly compromising task performance.
Original language | English |
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Title of host publication | Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing |
Publisher | Association for Computational Linguistics (ACL) |
Publication date | 2023 |
Pages | 8465-8483 |
DOIs | |
Publication status | Published - 2023 |
Event | 2023 Conference on Empirical Methods in Natural Language Processing - Singapore Duration: 6 Dec 2023 → 10 Dec 2023 |
Conference
Conference | 2023 Conference on Empirical Methods in Natural Language Processing |
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By | Singapore |
Periode | 06/12/2023 → 10/12/2023 |
ID: 382997067