Census says 2025 ACS will remove 'swapping' from its disclosure-avoidance methods
Census staff told webinar attendees that, following Department of Commerce guidance, the ACS removed record 'swapping' (a noise-based disclosure-avoidance technique) from its methods and will publish user notes on release day explaining implications for data users.
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The U.S. Census Bureau said it removed swapping — the interchange of a small share of household records between paired households in different geographic areas — from the ACS disclosure-avoidance toolkit after Department of Commerce guidance disallowed noise-based disclosure avoidance. "As a result, the American Community Survey removed swapping, which is considered a form of noise infusion from its disclosure avoidance methodology," Caleb Hoppler said, and the Bureau will publish a user note on release day with more details.
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