Bias Silhouette Analysis: Towards Assessing the Quality of Bias Metrics for Word Embedding Models

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Details

Original languageEnglish
Title of host publicationProceedings of the 30th International Joint Conference on Artificial Intelligence, IJCAI 2021
EditorsZhi-Hua Zhou
Pages552-559
Number of pages8
Publication statusPublished - 2021
Externally publishedYes
Event30th International Joint Conference on Artificial Intelligence, IJCAI 2021 - Online, Canada
Duration: 19 Aug 202126 Aug 2021

Publication series

NameIJCAI International Joint Conference on Artificial Intelligence
ISSN (Print)1045-0823

Abstract

Word embedding models reflect bias towards genders, ethnicities, and other social groups present in the underlying training data. Metrics such as ECT, RNSB, and WEAT quantify bias in these models based on predefined word lists representing social groups and bias-conveying concepts. How suitable these lists actually are to reveal bias-let alone the bias metrics in general-remains unclear, though. In this paper, we study how to assess the quality of bias metrics for word embedding models. In particular, we present a generic method, Bias Silhouette Analysis (BSA), that quantifies the accuracy and robustness of such a metric and of the word lists used. Given a biased and an unbiased reference embedding model, BSA applies the metric systematically for several subsets of the lists to the models. The variance and rate of convergence of the bias values of each model then entail the robustness of the word lists, whereas the distance between the models' values gives indications of the general accuracy of the metric with the word lists. We demonstrate the behavior of BSA on two standard embedding models for the three mentioned metrics with several word lists from existing research.

ASJC Scopus subject areas

Sustainable Development Goals

Cite this

Bias Silhouette Analysis: Towards Assessing the Quality of Bias Metrics for Word Embedding Models. / Spliethöver, Maximilian; Wachsmuth, Henning.
Proceedings of the 30th International Joint Conference on Artificial Intelligence, IJCAI 2021. ed. / Zhi-Hua Zhou. 2021. p. 552-559 (IJCAI International Joint Conference on Artificial Intelligence).

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Spliethöver, M & Wachsmuth, H 2021, Bias Silhouette Analysis: Towards Assessing the Quality of Bias Metrics for Word Embedding Models. in Z-H Zhou (ed.), Proceedings of the 30th International Joint Conference on Artificial Intelligence, IJCAI 2021. IJCAI International Joint Conference on Artificial Intelligence, pp. 552-559, 30th International Joint Conference on Artificial Intelligence, IJCAI 2021, Canada, 19 Aug 2021. https://doi.org/10.24963/ijcai.2021/77
Spliethöver, M., & Wachsmuth, H. (2021). Bias Silhouette Analysis: Towards Assessing the Quality of Bias Metrics for Word Embedding Models. In Z.-H. Zhou (Ed.), Proceedings of the 30th International Joint Conference on Artificial Intelligence, IJCAI 2021 (pp. 552-559). (IJCAI International Joint Conference on Artificial Intelligence). https://doi.org/10.24963/ijcai.2021/77
Spliethöver M, Wachsmuth H. Bias Silhouette Analysis: Towards Assessing the Quality of Bias Metrics for Word Embedding Models. In Zhou ZH, editor, Proceedings of the 30th International Joint Conference on Artificial Intelligence, IJCAI 2021. 2021. p. 552-559. (IJCAI International Joint Conference on Artificial Intelligence). doi: 10.24963/ijcai.2021/77
Spliethöver, Maximilian ; Wachsmuth, Henning. / Bias Silhouette Analysis : Towards Assessing the Quality of Bias Metrics for Word Embedding Models. Proceedings of the 30th International Joint Conference on Artificial Intelligence, IJCAI 2021. editor / Zhi-Hua Zhou. 2021. pp. 552-559 (IJCAI International Joint Conference on Artificial Intelligence).
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abstract = "Word embedding models reflect bias towards genders, ethnicities, and other social groups present in the underlying training data. Metrics such as ECT, RNSB, and WEAT quantify bias in these models based on predefined word lists representing social groups and bias-conveying concepts. How suitable these lists actually are to reveal bias-let alone the bias metrics in general-remains unclear, though. In this paper, we study how to assess the quality of bias metrics for word embedding models. In particular, we present a generic method, Bias Silhouette Analysis (BSA), that quantifies the accuracy and robustness of such a metric and of the word lists used. Given a biased and an unbiased reference embedding model, BSA applies the metric systematically for several subsets of the lists to the models. The variance and rate of convergence of the bias values of each model then entail the robustness of the word lists, whereas the distance between the models' values gives indications of the general accuracy of the metric with the word lists. We demonstrate the behavior of BSA on two standard embedding models for the three mentioned metrics with several word lists from existing research.",
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