Concentration of multilinear functions of the ising model with applications to network data
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NIPS-2017-concentration-of-multilinear-functions-of-the-ising-model-with-applications-to-network-data-Paper.pdf
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Published version
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Author(s) • •
Daskalakis, C
Dikkala, N
Kamath, G
Date Issued
January 1, 2017
Journal
Advances in Neural Information Processing Systems
Citation
Daskalakis, C, Dikkala, N and Kamath, G. 2017. "Concentration of multilinear functions of the ising model with applications to network data." Advances in Neural Information Processing Systems, 2017-December.
Version
Final published version
Abstract
© 2017 Neural information processing systems foundation. All rights reserved. We prove near-tight concentration of measure for polynomial functions of the Ising model under high temperature. For any degree d, we show that a degree-d polynomial of a n-spin Ising model exhibits exponential tails that scale as exp(-r2/d) at radius r = Ω(nd/2) Our concentration radius is optimal up to logarithmic factors for constant d, improving known results by polynomial factors in the number of spins. We demonstrate the efficacy of polynomial functions as statistics for testing the strength of interactions in social networks in both synthetic and real world data.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratory
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DOI of Published Version
https://papers.nips.cc/paper/2017/hash/4e732ced3463d06de0ca9a15b6153677-Abstract.html