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We have shown that
The tracker can do better by
- increasing the number of points combined in a single query
- i.e. there exist attacks for which
n → n → 0
n → 0 n/k →
There is a tight lower bound on the limit of n/k such that
n → n → 0
i.e, (n → n → 0) lim n/k > 1/C Privacy measure
Recall: C is max. value of change in entropy
Notes: