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Ulfar Erlingsson
Senior Staff Research Scientist at Google
Heads a team within Google Brain doing research on privacy and security for machine learning.
Previously, he has been a researcher at Microsoft Research, Silicon Valley and an Associate Professor at Reykjavik University, Iceland.
Is privacy an obstacle?Where does it raise the biggest challenge?
Metaphor for Privacy(randomized response)
Microdata: An Individual’s Report
Microdata: An Individual’s Report
Each bit is flipped with probability
25%
Big Picture Remains!
Two common data sets in Machine Learning
MNIST dataset: 70,000 images
28⨉28 pixels each
CIFAR-10 dataset: 60,000 color images
32⨉32 pixels each
What are the utility benefits / costs of ML privacy ?
Training ML models with privacy works and ensures strong generalization… and may help with data retention & removal concerns
But...Training with privacy means the MLmodel cannot “see” unique outliers
Model can’t learn about truly weird data
Utility of privacy-preserving ML models may always be worse on real outliers
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