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A Robust Bias Mitigation Procedure Based on the Stereotype Content Model

2022-10-26 08:13:58
Eddie L. Ungless, Amy Rafferty, Hrichika Nag, Björn Ross
arXiv_CL
       
Abstract

The Stereotype Content model (SCM) states that we tend to perceive minority groups as cold, incompetent or both. In this paper we adapt existing work to demonstrate that the Stereotype Content model holds for contextualised word embeddings, then use these results to evaluate a fine-tuning process designed to drive a language model away from stereotyped portrayals of minority groups. We find the SCM terms are better able to capture bias than demographic agnostic terms related to pleasantness. Further, we were able to reduce the presence of stereotypes in the model through a simple fine-tuning procedure that required minimal human and computer resources, without harming downstream performance. We present this work as a prototype of a debiasing procedure that aims to remove the need for a priori knowledge of the specifics of bias in the model.

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URL

https://arxiv.org/abs/2210.14552

PDF

https://arxiv.org/pdf/2210.14552.pdf

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