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COFFEE: Counterfactual Fairness for Personalized Text Generation in Explainable Recommendation

Nan Wang, Qifan Wang, Yi-Chia Wang, Maziar Sanjabi, Jingzhou Liu, Hamed Firooz, Hongning Wang, Shaoliang Nie


Abstract
As language models become increasingly integrated into our digital lives, Personalized Text Generation (PTG) has emerged as a pivotal component with a wide range of applications. However, the bias inherent in user written text, often used for PTG model training, can inadvertently associate different levels of linguistic quality with users’ protected attributes. The model can inherit the bias and perpetuate inequality in generating text w.r.t. users’ protected attributes, leading to unfair treatment when serving users. In this work, we investigate fairness of PTG in the context of personalized explanation generation for recommendations. We first discuss the biases in generated explanations and their fairness implications. To promote fairness, we introduce a general framework to achieve measure-specific counterfactual fairness in explanation generation. Extensive experiments and human evaluations demonstrate the effectiveness of our method.
Anthology ID:
2023.emnlp-main.819
Volume:
Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing
Month:
December
Year:
2023
Address:
Singapore
Editors:
Houda Bouamor, Juan Pino, Kalika Bali
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
13258–13275
Language:
URL:
https://aclanthology.org/2023.emnlp-main.819
DOI:
10.18653/v1/2023.emnlp-main.819
Bibkey:
Cite (ACL):
Nan Wang, Qifan Wang, Yi-Chia Wang, Maziar Sanjabi, Jingzhou Liu, Hamed Firooz, Hongning Wang, and Shaoliang Nie. 2023. COFFEE: Counterfactual Fairness for Personalized Text Generation in Explainable Recommendation. In Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing, pages 13258–13275, Singapore. Association for Computational Linguistics.
Cite (Informal):
COFFEE: Counterfactual Fairness for Personalized Text Generation in Explainable Recommendation (Wang et al., EMNLP 2023)
Copy Citation:
PDF:
https://aclanthology.org/2023.emnlp-main.819.pdf
Video:
 https://aclanthology.org/2023.emnlp-main.819.mp4