FairPIVARA: Reducing and Assessing Biases in CLIP-Based Multimodal Models

• URL: http://arxiv.org/abs/2409.19474v2
• Date: Sat, 5 Oct 2024 00:44:32 GMT
• Title: FairPIVARA: Reducing and Assessing Biases in CLIP-Based Multimodal Models
• Authors: Diego A. B. Moreira, Alef Iury Ferreira, Jhessica Silva, Gabriel Oliveira dos Santos, Luiz Pereira, João Medrado Gondim, Gustavo Bonil, Helena Maia, Nádia da Silva, Simone Tiemi Hashiguti, Jefersson A. dos Santos, Helio Pedrini, Sandra Avila,
• Abstract summary: We evaluate four different types of discriminatory practices within visual-language models. We introduce FairPIthera, a method to reduce them by removing the most affected dimensions of feature embeddings. The application of FairPIthera has led to a significant reduction of up to 98% in observed biases.
• Score: 5.748694060126043
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: Despite significant advancements and pervasive use of vision-language models, a paucity of studies has addressed their ethical implications. These models typically require extensive training data, often from hastily reviewed text and image datasets, leading to highly imbalanced datasets and ethical concerns. Additionally, models initially trained in English are frequently fine-tuned for other languages, such as the CLIP model, which can be expanded with more data to enhance capabilities but can add new biases. The CAPIVARA, a CLIP-based model adapted to Portuguese, has shown strong performance in zero-shot tasks. In this paper, we evaluate four different types of discriminatory practices within visual-language models and introduce FairPIVARA, a method to reduce them by removing the most affected dimensions of feature embeddings. The application of FairPIVARA has led to a significant reduction of up to 98% in observed biases while promoting a more balanced word distribution within the model. Our model and code are available at: https://github.com/hiaac-nlp/FairPIVARA.

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