Re: [private-measurement] Use Case: Different Attribution Models (#15)

I want to outline another dimension which we discussed today, whether the platform should explicitly offer _cross channel_ attribution. This would be a new capability that is only possible today with parties that are present on every single ad interaction.

As mentioned, there _can be_ security issues (DOS) with supporting this, but it should be in scope when we discuss what attribution models we would like to support.

In terms of existing support, the Attribution Reporting API proposal uses a priority based system, where the _highest priority_ impression gets full credit at conversion time. This system supports (with some caveats), first touch, last touch, and probabilistic-linear attribution. We also do _not_ explicitly support platform-assisted cross-channel attribution.

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Received on Wednesday, 18 May 2022 01:17:50 UTC