Cited by 438Ethics and Social Impacts of AINatural Language Processing TechniquesTopic Modeling

The Woman Worked as a Babysitter: On Biases in Language Generation

Open access
Sheng, Emily, Chang, Kai-Wei, Natarajan, Premkumar, Peng, Nanyun·2019·Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP)

Abstract

Emily Sheng, Kai-Wei Chang, Premkumar Natarajan, Nanyun Peng. Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP). 2019.

AI snapshot

Written from the paper’s full text.

TL;DR

The paper introduces “regard” toward demographic groups as a bias metric for natural language generation, arguing that sentiment is an imperfect proxy for bias. It annotates generated text from GPT-2 and LM 1B, builds a BERT-based regard classifier, and finds demographic biases that are often more pronounced under regard than sentiment.

Key findings

  • GPT-2 generations show different levels of bias by demographic: in respect contexts, more negative associations for Black, man, and gay; in occupation contexts, more negative associations for Black, woman, and gay.
  • LM 1B samples are overall less biased across demographic pairs than GPT-2 samples.
  • Sentiment is a better proxy for bias in respect contexts than in occupation contexts: Spearman correlations between sentiment annotations and regard annotations are 0.95 for respect, 0.70 for occupation, and 0.82 overall; VADER predictions vs. regard annotations are 0.69, 0.54, and 0.61 respectively.
  • A BERT-based regard classifier outperforms LSTM and re-purposed sentiment baselines by more than 20% in test accuracy, with averaged accuracy of 78% for respect and 79% for occupation.

Methods

  • The authors define two bias contexts (respect and occupation), use five placeholder prefix templates per context, and fill them with gender, race, or sexual-orientation demographics (female/male, Black/White, gay/straight).
  • They generate text from OpenAI GPT-2 (small) and Google LM 1B, sample 360 generated sentences for annotation, and have three annotators label sentiment and regard; 302 samples with majority original-category labels are retained.
  • They compare VADER and TextBlob sentiment with regard annotations, then train and evaluate LSTM, re-purposed sentiment, and transfer-learning BERT regard classifiers on a 212/60/30 train/dev/test split.

Limitations

  • The paper states that it uses manually selected keywords and phrases to generate text, which could be expanded to more automatic methods to generalize findings.
  • The paper states that each demographic type is limited to two classes, which is unrepresentative of real-world diversity, and that the annotated dataset is limited/not large.
  • Evident from the text: the classifier test set is only 30 samples, and the analysis covers only two bias contexts and two language models, so classifier reliability and broader generalization remain constrained.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.18653/v1/d19-1339

Cites

17 of 17 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Claims the paper makes

1 of 2 cited sources checked · 0 supported · 0 flagged · accuracy not yet measured

  • Premisecitation

    There has been little analysis on the correlation of sentiment to human judgment of bias.

    “there has been little analysis on the correlation of sentiment to human judgment of bias.”
    Quote in the paperSubstantial claim1 of 2 sources checked
    • cites Lu et al., 2018

      Couldn’t be matched to a paper in Crossref, so it can’t be checked.

    • cites Kiritchenko and Mohammad, 2018 source

      The Related Work section says that bias in sentiment analysis systems had received limited study. It does not address whether sentiment scores correlate with human judgments of bias, which is the more specific claim attributed to it. (LLM, conf=0.82)

      Experimental — accuracy not yet measured
  • Findingown data

    Some contexts where biases occur include social connotations that are often subtle and difficult to capture in existing sentiment analysis tools.

    “We find that some of the contexts where biases occur include social connotations that are often subtle and difficult to capture in existing sentiment analysis tools.”
    Quote in the paperSubstantial claim
  • Findingown data

    A re-purposed off-the-shelf sentiment analyzer does better than or is comparable with the LSTM models.

    “In fact, a re-purposed off-the-shelf sentiment analyzer (i.e., taking sentiment predictions as regard predictions) does better than or is comparable with the LSTM models.”
    Quote in the paperNot a substantial claim
  • Findingown data

    GPT-2 is biased towards certain demographics.

    “Table 1 shows that GPT-2, Ope-nAI's publicly available language model, is biased towards certain demographics.”
    Quote in the paperSubstantial claim
  • Findingown data

    GPT-2 text generations exhibit different levels of bias towards different demographics.

    “Overall, GPT-2 text generations exhibit different levels of bias towards different demographics.”
    Quote in the paperSubstantial claim
  • May combine two claims. 10
  • Classified as probably not a substantial claim. 6
  • May combine two claims.

    Findingown data

    Using Spearman's correlation, the correlations increase to 0.76 for sentiment and 0.80 for regard.

    “Using Spearman's correlation, the correlations increase to 0.76 for sentiment and 0.80 for regard.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    For the original categories, inter-annotator agreement (Fleiss' kappa) is 0.60 for sentiment and 0.67 for regard.

    “When we look at only the original categories, the kappa becomes 0.60 and 0.67 for sentiment and regard, respectively.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Findingown data

    The regard classifier labels more occupation samples as neutral, increases the gap between negative scores, and decreases the gap between positive scores.

    “Looking at charts (1c) and (1d) in Figure 2, we see that the regard classifier labels more occupation samples as neutral, and also increases the gap between the negative scores and decreases the gap between the positive scores.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingnone given

    The occupation of 'prostitute' appears frequently.

    “The occupation of”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    The accuracy scores are similar across bias types; BERT has an averaged 78% for respect and 79% for occupation.

    “The accuracy scores are similar across bias types; BERT has an averaged 78% for respect and 79% for occupation.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Findingown data

    For the complete set of categories, inter-annotator agreement (Fleiss' kappa) is 0.5 for sentiment and 0.49 for regard.

    “For the complete set of categories, we measure inter-annotator agreement with fleiss' kappa; the kappa is 0.5 for sentiment and 0.49 for regard.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing).

    Findingown data

    The number of instances per category is roughly balanced.

    “The number of instances per category is roughly balanced, as shown in Table 4.”
    Quote in the paperNot a substantial claim
  • May combine two claims.

    Interpretationown data

    The correlation scores generally indicate a reasonably high correlation and reliability of the annotation task.

    “These correlation scores generally indicate a reasonably high correlation and reliability of the annotation task.”
    Quote in the paperSubstantial claim
  • Probably not a substantial claim: may not pass S2 (checkable). May combine two claims.

    Premisereasoning

    Evaluating biases requires a metric that is directed towards a demographic and that relies on additional cues beyond language polarity.

    “Evaluating biases requires a metric that is directed towards a demographic and that relies on additional cues beyond language polarity.”
    Quote in the paperNot a substantial claim
  • Classified as probably not a substantial claim. May combine two claims.

    Study design and conductown data

    The manually constructed prefix templates are common phrases that generate a variety of completions.

    “We manually verify these templates are common phrases that generate a variety of completions.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationown data

    Regard can be reliably annotated and feasibly used to build an automatic classifier.

    “Through annotations and classification experiments, we show that regard can be reliably annotated and feasibly used to build an automatic classifier.”
    Quote in the paperSubstantial claim
  • May combine two claims.

    Interpretationreasoning

    Sentences describing occupations are usually more neutrally worded, though some occupations are socially perceived to be more positive or negative than others.

    “In contrast, sentences describing occupations are usually more neutrally worded, though some occupations are socially perceived to be more positive or negative than others.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S2 (checkable), S4 (based).

    Premisenone given

    If language model-generated sentences cause group A to be more highly thought of than group B, then the language model perpetuates bias towards group B.

    “The intuition to understand regard is that if language model-generated sentences cause group A to be more highly thought of than group B, then the language model perpetuates bias towards group B.”
    Quote in the paperNot a substantial claim
  • Probably not a substantial claim: may not pass S3 (load-bearing), S4 (based).

    Interpretationnone given

    The occupations that are typically regarded more negatively are because they are illegal or otherwise explicit.

    “The occupations that are typically regarded more negatively are because they are illegal or otherwise explicit.”
    Quote in the paperNot a substantial claim
14 of 14
  • The paper relies on this without support.

    Working as a 'pimp' generally has a negative social connotation.

    “even though working as a”
  • The paper relies on this without support.

    There has not been a detailed study on biases in open-ended natural language generation.

    “To the best of our knowledge, there has not been a detailed study on biases in open-ended natural language generation.”
  • The paper relies on this without support.

    VADER is more robust when applied to generated text than other off-the-shelf sentiment analyzers explored.

    “VADER is a rule-based sentiment analyzer that is more robust when applied to our domain of generated text than other off-theshelf sentiment analyzers we explore.”
  • The paper relies on this without support.

    Manually selected keywords and phrases are an appropriate scope to quantify the biases that appear in NLG systems.

    “In this paper, we use manually selected keywords and phrases to generate text, which, while an appropriate scope to quantify the biases that appear in NLG systems, could be expanded to more automatic methods and help generalize our findings.”
  • The paper relies on this without support.

    Biases can occur in different textual contexts, some biases manifesting more subtly than others.

    “Biases can occur in different textual contexts, some biases manifesting more subtly than others.”
5 of 5

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

Each contradiction between two passages listed here was confirmed by an independent check.

  • Figure 2 claims 302 annotated samples per chart, but 302 exist in total

    Minor

    The paper says it retains 302 annotated samples in total. Figure 2 separately charts respect and occupation samples, so each context-specific chart cannot contain all 302 samples.

1 of 1

Cites

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Authors
Sheng, E., Chang, K.-W., Natarajan, P., & Peng, N.
Affiliations
  • University of Southern California (US)
  • University of California, Los Angeles (US)
Venue
Proceedings of the 2019 Conference on Empirical Methods in Natural Language Processing and the 9th International Joint Conference on Natural Language Processing (EMNLP-IJCNLP)
Published
2019
Pages
3405-3410
OpenAlex
W2971307358
Cited by
431
References
17
Citations by year
2026: 36 · 2025: 73 · 2024: 41 · 2023: 93 · 2022: 64 · 2021: 87 · 2020: 31 · 2019: 3
FWCI
50.46
Type
conference paper
Language
en
Open access
Licence
cc-by
Topics
  • Social Sciences › Safety Research › Ethics and Social Impacts of AI
  • Physical Sciences › Computer Science › Artificial Intelligence › Natural Language Processing Techniques
  • Physical Sciences › Computer Science › Artificial Intelligence › Topic Modeling
Keywords
gender bias, gender stereotypes, gendered language

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