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v2026.1714 entries · CC-BY 4.0
Dictionary termTrack AStablev2026.2

AI bias

Systematic skew in an AI system's outputs that produces unjustified differential treatment, accuracy, or representation across groups, tasks, or contexts, arising from training-data composition, model architecture, objective function, or deployment context.

ByCASRAI Editorial Board
· Last updated 21 May 2026

Examples

Worked examples

  • Is an instance

    An LLM that consistently misgenders historical scientists from non-English-speaking countries

  • Is an instance

    An image classifier with 30% lower accuracy on darker-skinned subjects

Counter-examples

Looks similar, but isn't

  • Not an instance

    A model that is uniformly wrong across all groups exhibits inaccuracy but not bias in this sense

Editorial commentary

For scholarly disclosure, the relevant question is whether bias in the AI tool used could have materially affected the work’s findings or claims. Examples include LLMs underrepresenting non-Western scholarly traditions in literature summaries, or vision models with poorer accuracy on darker skin tones.

References

  • Mehrabi et al. 2021 ‘A Survey on Bias and Fairness in Machine Learning’ ACM Computing Surveys
  • Buolamwini and Gebru 2018 ‘Gender Shades’ FAT*

Also known as

Algorithmic bias · Model bias

Machine-readable encodings

Use in your systems

JATS XML <role> element
xml
<role vocab="credit"
      vocab-identifier="https://casrai.org/dictionary/"
      vocab-term="AI bias"
      vocab-term-identifier="https://casrai.org/dictionary/term/ai-bias" />
Schema.org DefinedTerm (JSON-LD)
json
{
  "@context": "https://schema.org",
  "@type": "DefinedTerm",
  "name": "AI bias",
  "identifier": "https://casrai.org/dictionary/term/ai-bias",
  "description": "Systematic skew in an AI system's outputs that produces unjustified differential treatment, accuracy, or representation across groups, tasks, or contexts, arising from training-data composition, model architecture, objective function, or deployment context.",
  "inDefinedTermSet": "https://casrai.org/dictionary/domain/generative-ai-use-and-disclosure/",
  "url": "https://casrai.org/dictionary/term/ai-bias",
  "sameAs": [
    "Algorithmic bias",
    "Model bias"
  ],
  "license": "https://creativecommons.org/licenses/by/4.0/"
}

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