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Sachin Agarwal's Publications

Estimating the number of differences between remote sets
Citation key AT-ENDBRS-06
Author Agarwal, Sachin and Trachtenberg, Ari
Title of Book IEEE Information Theory Workshop (ITW)
Pages 217–221
Year 2006
ISBN 1-4244-0035-X
DOI http://dx.doi.org/10.1109/ITW.2006.1633815
Location Punta del Este, Uruguay
Month March
Abstract We consider the problem of approximating the number of differences between sets held on remote hosts using minimum communication. Efficient solutions to this problem are important for streamlining a variety of communication sensitive network applications, including data synchronization in mobile networks, gossip protocols and content delivery networks. Using tools from the field of interactive communication, we show that this problem requires about as much communication as the problem of exactly determining such differences. As a result, we propose a heuristic solution based on the counting Bloom filter. We provide analytic bounds on the expected performance of our protocol and also experimental evidence that they can outperform existing difference approximation techniques.
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