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Main Authors: Deas, Nicholas, Vente, Blake, Ananthram, Amith, Grieser, Jessica A., Patton, Desmond, Kleiner, Shana, Shepard, James, McKeown, Kathleen
Format: Preprint
Published: 2025
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Online Access:https://arxiv.org/abs/2503.10789
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author Deas, Nicholas
Vente, Blake
Ananthram, Amith
Grieser, Jessica A.
Patton, Desmond
Kleiner, Shana
Shepard, James
McKeown, Kathleen
author_facet Deas, Nicholas
Vente, Blake
Ananthram, Amith
Grieser, Jessica A.
Patton, Desmond
Kleiner, Shana
Shepard, James
McKeown, Kathleen
contents With a combination of quantitative experiments, human judgments, and qualitative analyses, we evaluate the quantity and quality of African American Language (AAL) representation in 12 predominantly English, open-source pretraining corpora. We specifically focus on the sources, variation, and naturalness of included AAL texts representing the AAL-speaking community. We find that AAL is underrepresented in all evaluated pretraining corpora compared to US demographics, constituting as few as 0.007% and at most 0.18% of documents. We also find that more than 25% of AAL texts in C4 may be perceived as inappropriate for LLMs to generate and to reinforce harmful stereotypes. Finally, we find that most automated filters are more likely to conserve White Mainstream English (WME) texts over AAL in pretraining corpora.
format Preprint
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institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Data Caricatures: On the Representation of African American Language in Pretraining Corpora
Deas, Nicholas
Vente, Blake
Ananthram, Amith
Grieser, Jessica A.
Patton, Desmond
Kleiner, Shana
Shepard, James
McKeown, Kathleen
Computation and Language
With a combination of quantitative experiments, human judgments, and qualitative analyses, we evaluate the quantity and quality of African American Language (AAL) representation in 12 predominantly English, open-source pretraining corpora. We specifically focus on the sources, variation, and naturalness of included AAL texts representing the AAL-speaking community. We find that AAL is underrepresented in all evaluated pretraining corpora compared to US demographics, constituting as few as 0.007% and at most 0.18% of documents. We also find that more than 25% of AAL texts in C4 may be perceived as inappropriate for LLMs to generate and to reinforce harmful stereotypes. Finally, we find that most automated filters are more likely to conserve White Mainstream English (WME) texts over AAL in pretraining corpora.
title Data Caricatures: On the Representation of African American Language in Pretraining Corpora
topic Computation and Language
url https://arxiv.org/abs/2503.10789