منابع مشابه
Distributed Private Heavy Hitters
In this paper, we give efficient algorithms and lower bounds for solving the heavy hitters problem while preserving differential privacy in the fully distributed local model. In this model, there are n parties, each of which possesses a single element from a universe of size N . The heavy hitters problem is to find the identity of the most common element shared amongst the n parties. In the loc...
متن کاملBlock Heavy Hitters
We study a natural generalization of the heavy hitters problem in the streaming context. We term this generalization block heavy hitters and define it as follows. We are to stream over a matrix A, and report all rows that are heavy, where a row is heavy if its `1-norm is at least φ fraction of the `1 norm of the entire matrix A. In comparison, in the standard heavy hitters problem, we are requi...
متن کاملPrivate Approximate Heavy Hitters
We consider the problem of private computation of approximate Heavy Hitters. Alice and Bob each hold a vector and, in the vector sum, they want to nd the B largest values along with their indices. While the exact problem requires linear communication, protocols in the literature solve this problem approximately using polynomial computation time, polylogarithmic communication, and constantly man...
متن کاملPractical Locally Private Heavy Hitters
We present new heavy-hitters algorithms satisfying local-differential-privacy, with optimal or nearoptimal worst-case error, running time, and memory. In our algorithms, the server running time is $\tilde O(n)$ and user running time is $\tilde O(1)$, hence improving on the prior state-of-the-art result of Bassily and Smith [STOC 2015] requiring $O(n^{5/2})$ server time and $O(n^{3/2})$ user tim...
متن کاملFinding Hierarchical Heavy Hitters in Data Streams
Aggregation along hierarchies is a critical summary technique in a large variety of online applications including decision support, and network management (e.g., IP clustering, denial-of-service attack monitoring). Despite the amount of recent study that has been dedicated to online aggregation on sets (e.g., quantiles, hot items), surprisingly little attention has been paid to summarizing hier...
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ژورنال
عنوان ژورنال: Journal of Experimental Medicine
سال: 2005
ISSN: 1540-9538,0022-1007
DOI: 10.1084/jem2018iti4