On the Long-term Impact of Algorithmic Decision Policies: Effort …13-11... · 2019-06-07 ·...
Transcript of On the Long-term Impact of Algorithmic Decision Policies: Effort …13-11... · 2019-06-07 ·...
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On the Long-term Impact of Algorithmic Decision Policies:Effort Unfairness & Feature Segregation via Social Learning
Hoda Heidari, Vedant Nanda, Krishna Gummadi
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Automated Decision Making
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Algorithmic Unfairness
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Problems with Static Notions of Fairness
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Problems with Static Notions of Fairness
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Problems with Static Notions of Fairness
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Problems with Static Notions of Fairness
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Effort Unfairness● Economic models of Equality of Opportunity
(Roemer, 2002)
● For an individual in group s● changing a monotone feature from x to x’ ● takes effort max { 0, Qs(x') - Qs(x) }.
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Long-term Impact● Our proposal:
○ People will exert effort and invest in qualifications○ that improve their utility (= reward - effort).
● Individual-level model: social learning (Bandura, 1962)○ Individuals imitate the behavior of their social models.○ Social model is another decision subject imitating whom maximizes utility
● Population-level measure: segregation
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Measuring Impact on Qualifications
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Fairness Interventions
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Food for Thought● What is the ultimate purpose of a fair model?● Are all errors created equal?● Is it ethically acceptable
○ To incentivize different groups to obtain different qualification?○ To employ an “unfair” model today to guarantee long-term equality?
● ...