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Communication-space tradeoffs for unrestricted protocols

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3 Author(s)
P. Beame ; Dept. of Comput. Sci. & Eng., Washington Univ., Seattle, WA, USA ; M. Tompa ; P. Yan

Communicating branching programs are introduced, and a general technique for demonstrating communication-space tradeoffs for pairs of communicating branching programs is developed. The technique is used to prove communication-space tradeoffs for any pair of communicating branching programs that hashes according to a universal family of hash functions. Other tradeoffs follow from this result. For example any pair of communicating Boolean branching programs that computes matrix-vector products over GF(2) requires communication-space product Ω(n 2). These are the first examples of communication-space tradeoffs on a completely general model of communicating processes

Published in:

Foundations of Computer Science, 1990. Proceedings., 31st Annual Symposium on

Date of Conference:

22-24 Oct 1990