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Intro
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Implementing Differential Privacy for the 2020 US Census
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- 1 Intro
- 2 Differential Privacy was invented in 2006 (14 years ago) Modem Publik Key Cryptography was invented between 1976 and 1978
- 3 The Census Bureau deployed the first DP implementation in the world for OnTheMap (2008)
- 4 We solved many technical challenges deploying DP for the 2020 Census!
- 5 We still haven't met user expectations.
- 6 The Decennial Census!
- 7 By 2017, we thought we had a good understanding of how DP would fit.
- 8 Different groups at USCB had different assumptions about the data flow.
- 9 The DP system had to be developed with real (Title 13-protected) data. Most systems for the 2020 Census were developed using simulated data
- 10 Census Bureau leadership was 100% behind the move to Differential Privacy
- 11 Team and Reference Implementation
- 12 CPU load of 21 AWS Instances during an execution of the TopDown algorithm
- 13 We re-published the 2010 data using the 2020 TopDown algorithm.
- 14 At the root of our acceptance problem: Non-negativity requirements create systematic bias and increase the size of outlier errors
- 15 In summary: The 2020 Census DP Timeline
