Tight Bounds for Set Disjointness in the Message Passing Model

Mark Braverman; Faith Ellen; Rotem Oshman; Toniann Pitassi; Vinod Vaikuntanathan

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arXiv · 1305.4696

Tight Bounds for Set Disjointness in the Message Passing Model

Mark Braverman·Faith Ellen·Rotem Oshman·Toniann Pitassi·Vinod Vaikuntanathan

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Abstract

In a multiparty message-passing model of communication, there are $k$ players. Each player has a private input, and they communicate by sending messages to one another over private channels. While this model has been used extensively in distributed computing and in multiparty computation, lower bounds on communication complexity in this model and related models have been somewhat scarce. In recent work \cite{phillips12,woodruff12,woodruff13}, strong lower bounds of the form $\Omega(n \cdot k)$ were obtained for several functions in the message-passing model; however, a lower bound on the classical Set Disjointness problem remained elusive. In this paper, we prove tight lower bounds of the form $\Omega(n \cdot k)$ for the Set Disjointness problem in the message passing model. Our bounds are obtained by developing information complexity tools in the message-passing model, and then proving an information complexity lower bound for Set Disjointness. As a corollary, we show a tight lower bound for the task allocation problem \cite{DruckerKuhnOshman} via a reduction from Set Disjointness.

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Mark Braverman, Faith Ellen, Rotem Oshman, Toniann Pitassi, Vinod Vaikuntanathan. 2013-05-21. Tight Bounds for Set Disjointness in the Message Passing Model. https://arxiv.org/abs/1305.4696

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