Fair-doctor: Detecting and mitigating unfairness in neural networks
Adhikari, Rittika
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https://hdl.handle.net/2142/113921
Description
Title
Fair-doctor: Detecting and mitigating unfairness in neural networks
Author(s)
Adhikari, Rittika
Issue Date
2021-12-09
Director of Research (if dissertation) or Advisor (if thesis)
Koyejo, Oluwasanmi
Department of Study
Computer Science
Discipline
Computer Science
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Date of Ingest
2022-04-29T21:35:50Z
Keyword(s)
Computer science
Language
eng
Abstract
"Important decisions are increasingly based directly on predictions from classifiers; for example, machine learning models are now being used to facilitate autonomous vehicles, predict stock market trends, diagnose illnesses, and so much more. However, users fundamentally understand very little about how these black box classifiers come to make decisions, and whether these predictions are unbiased. With the more prevalent adoption of these systems, it is crucial that we must be able to both explain and understand what concepts our models utilize to make predictions to ensure that we are building unbiased, interpretable models. To facilitate this, we propose Fair-Doctor, a pipeline which diagnoses unfairness, treats it, and follows up to ensure that the algorithmic bias has been mitigated. We utilize TCAV (Testing With Concept Activation Vectors), a state-of-the-art interpretability tool, to diagnose unfairness. We also introduce a novel adversarial fairness loss function, which works to remove the specified unfairness in the model. We evaluate this architecture on a simple CNN trained on CelebA to predict how ""young"" a person looks. Our results demonstrate that we are able to successfully reduce the bias in this model."
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