Cited by 615Ethics and Social Impacts of AIArtificial Intelligence in LawPolicing Practices and Perceptions

To Predict and Serve?

Open access
Lum, Kristian, Isaac, William·2016·Significance

Abstract

Predictive policing systems are used increasingly by law enforcement to try to prevent crime before it occurs. But what happens when these systems are trained using biased data? Kristian Lum and William Isaac consider the evidence – and the social consequences

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Registry

Crossref · 10.1111/j.1740-9713.2016.00960.x

Cites

10 of 10 references verified0 citation errors · 0 not checkable

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  • If an AI system is trained on a biased sample, it will learn that people with an immigrant background are more likely to commit crime.

    “If an AI system is trained on such a biased sample, it will learn that people with an immigrant background are more likely to commit crime.”

    From Discrimination, artificial intelligence, and algorithmic decision-making (2025) · cites this paper as Lum and Isaac 2016

    The “Bias in police-recorded data” section says algorithms reproduce biases in their training data and that police records may over-represent certain ethnic groups. It does not identify people with an immigrant background or say the system would learn that they are more likely to commit crime; the paper distinguishes predictions based on police records from predictions of crime itself. (LLM, conf=0.87)

    Experimental — accuracy not yet measured
  • Lum and Isaac showed that PredPol reinforced existing biases in the dataset and targeted Black people at disproportionately high rates, twice as high as white people, even though drug use was roughly equal between the two groups.

    “Lum and Isaac (2016) showed that PredPol, a popular predictive policing software, reinforced existing biases in the dataset and targeted Black people at disproportionately high rates (twice as high as white people, even though drug use was roughly equal between the two groups)”

    From Equity and Artificial Intelligence in Education: Will "AIEd" Amplify or Alleviate Inequities in Education? (2021) · cites this paper as Lum and Isaac (2016)

    In “How do we estimate the number of drug users?”, the authors report that their application of the PredPol algorithm to Oakland police records reinforced existing biases and would target Black people at roughly twice the rate of white people, despite roughly equivalent estimated drug use. The claim omits that this was a modeled outcome in Oakland, not evidence that PredPol actually directed policing at those rates. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • Interactions between human and machine biases may have compounding effects, for better or worse, in the presence of human-AI feedback loops in learning or decision-making.

    “Such interactions between human and machine biases may have compounding effects - for better or worse - in the presence of human-AI feedback loops in learning or decision-making”

    From Equity and Artificial Intelligence in Education: Will "AIEd" Amplify or Alleviate Inequities in Education? (2021) · cites this paper as Lum and Isaac, 2016

    In “Bias in police-recorded data,” the paper describes a feedback loop in which police act on biased predictions, generate new records through targeted patrols, and feed those records back into the model, compounding the bias. This supports the claim about harmful compounding in a human–machine decision loop, but the paper does not support the “for better” possibility or establish the claim across learning and decision-making generally. (LLM, conf=0.86)

    Experimental — accuracy not yet measured
  • The effects of a biased sample could be amplified by AI predictions, causing a feedback loop in policing based on crime statistics.

    “The effects of such a biased sample could even be amplified by AI predictions.”

    From Discrimination, artificial intelligence, and algorithmic decision-making (2025) · cites this paper as Lum and Isaac 2016

  • If biased data is used to train predictive models, the models will reproduce those same biases.

    “if biased data is used to train these predictive models, the models will reproduce (…) those same biases.”

    From Discrimination, artificial intelligence, and algorithmic decision-making (2025) · cites this paper as Lum and Isaac 2016

Self-check

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Cites

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Research works printed but not linked: 1

  1. Mosher, C. J., Miethe, T. D. and Hart, T. C. (2010) The Mismeasure of Crime. Thousand Oaks, CA: Sage Publications.

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Authors
Lum, K., & Isaac, W.
Affiliations
  • Kristian Lum, PhD is Lead statistician at the Human Rights Data Analysis Group
  • Michigan State University (US)
Venue
Significance
Published
2016-10-01
Volume
13
Issue
5
Pages
14-19
ISSN
  • 1740-9705 (ISSN-L)
  • 1740-9713
OpenAlex
W2529251251
Cited by
611
References
10
Citations by year
2026: 131 · 2025: 92 · 2024: 40 · 2023: 40 · 2022: 45 · 2021: 87 · 2020: 63 · 2019: 68 · 2018: 31 · 2017: 14
FWCI
92.81
Type
journal article
Language
en
Open access
Locations
Significance (publishedVersion)
Topics
  • Social Sciences › Safety Research › Ethics and Social Impacts of AI
  • Social Sciences › Political Science and International Relations › Artificial Intelligence in Law
  • Social Sciences › Political Science and International Relations › Policing Practices and Perceptions
Keywords
predictive policing, algorithmic bias, biased training data, crime prediction, law enforcement, algorithmic fairness

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