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differential privacy is good for answering population questions like "how many people in my dataset have property x?". it's a lot less clear how to apply it to
by dp_throw 5y ago
differential privacy is good for answering population questions like "how many people in my dataset have property x?". it's a lot less clear how to apply it to something as granular as serving personalized ads. and as the example demonstrates, this compounds if you're doing it repeatedly with data that keeps getting updated. to the best of my knowledge, "differentially private personalized ads" is a hard problem, and maybe just a contradiction in terms.
- SpicyLemonZest 5y agoI think it’s Google’s responsibility to make it clear, though, either by putting in the theoretical work to apply differential privacy or proposing a refinement of the concept that allows them to. It’s like those people who propose grand new theories of physics without using any math; if you can’t connect your ideas to what’s come before, people will be rightfully suspicious whether they’re built on quicksand.