Exponential Separation of Communication and External Information

STOC '16: Symposium on Theory of Computing Cambridge MA USA June, 2016, pp. 977-986, 2016.

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Keywords:
communication complexitycommunication compressioninformation complexity

Abstract:

We show an exponential gap between communication complexity and external information complexity, by analyzing a communication task suggested as a candidate by Braverman. Previously, only a separation of communication complexity and internal information complexity was known. More precisely, we obtain an explicit example of a search probl...More

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