Summary Reports Optimization in the Privacy Sandbox Attribution Reporting API

• URL: http://arxiv.org/abs/2311.13586v1
• Date: Wed, 22 Nov 2023 18:45:20 GMT
• Title: Summary Reports Optimization in the Privacy Sandbox Attribution Reporting API
• Authors: Hidayet Aksu, Badih Ghazi, Pritish Kamath, Ravi Kumar, Pasin Manurangsi, Adam Sealfon, Avinash V Varadarajan,
• Abstract summary: The Attribution Reporting API has been deployed by Google Chrome to support the basic advertising functionality of attribution reporting. We present methods for optimizing the allocation of the contribution budget for summary reports from the API.
• Score: 51.00674811394867
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The Privacy Sandbox Attribution Reporting API has been recently deployed by Google Chrome to support the basic advertising functionality of attribution reporting (aka conversion measurement) after deprecation of third-party cookies. The API implements a collection of privacy-enhancing guardrails including contribution bounding and noise injection. It also offers flexibility for the analyst to allocate the contribution budget. In this work, we present methods for optimizing the allocation of the contribution budget for summary reports from the Attribution Reporting API. We evaluate them on real-world datasets as well as on a synthetic data model that we find to accurately capture real-world conversion data. Our results demonstrate that optimizing the parameters that can be set by the analyst can significantly improve the utility achieved by querying the API while satisfying the same privacy bounds.

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