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A matrix expander Chernoff bound

Published: 20 June 2018 Publication History

Abstract

We prove a Chernoff-type bound for sums of matrix-valued random variables sampled via a random walk on an expander, confirming a conjecture due to [Wigderson and Xiao 06]. Our proof is based on a new multi-matrix extension of the Golden-Thompson inequality which improves upon the inequality in [Sutter, Berta and Tomamichel 17], as well as an adaptation of an argument for the scalar case due to [Healy 08]. Our new multi-matrix Golden-Thompson inequality could be of independent interest. Secondarily, we also provide a generic reduction showing that any concentration inequality for vector-valued martingales implies a concentration inequality for the corresponding expander walk, with a weakening of parameters proportional to the squared mixing time.

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  • (2020)A matrix chernoff bound for Markov chains and its application to co-occurrence matricesProceedings of the 34th International Conference on Neural Information Processing Systems10.5555/3495724.3497271(18421-18432)Online publication date: 6-Dec-2020
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cover image ACM Conferences
STOC 2018: Proceedings of the 50th Annual ACM SIGACT Symposium on Theory of Computing
June 2018
1332 pages
ISBN:9781450355599
DOI:10.1145/3188745
Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Publication History

Published: 20 June 2018

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Author Tags

  1. Chernoff bound
  2. Golden-Thompson inequality
  3. derandomization
  4. expander graph
  5. matrix concentration
  6. random walks

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STOC '18
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STOC '18: Symposium on Theory of Computing
June 25 - 29, 2018
CA, Los Angeles, USA

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Cited By

View all
  • (2022)A Scalable Adaptive Sampling Based Approach for Big Data ClassificationAdvances in Computing Systems and Applications10.1007/978-3-031-12097-8_7(73-83)Online publication date: 28-Sep-2022
  • (2021)From Poincaré inequalities to nonlinear matrix concentrationBernoulli10.3150/20-BEJ128927:3Online publication date: 1-May-2021
  • (2020)A matrix chernoff bound for Markov chains and its application to co-occurrence matricesProceedings of the 34th International Conference on Neural Information Processing Systems10.5555/3495724.3497271(18421-18432)Online publication date: 6-Dec-2020
  • (2020)Concentration of Markov chains with bounded momentsAnnales de l'Institut Henri Poincaré, Probabilités et Statistiques10.1214/19-AIHP103956:3Online publication date: 1-Aug-2020
  • (2020)Testing Positive Semi-Definiteness via Random Submatrices2020 IEEE 61st Annual Symposium on Foundations of Computer Science (FOCS)10.1109/FOCS46700.2020.00114(1191-1202)Online publication date: Nov-2020
  • (2019)A Hoeffding inequality for Markov chainsElectronic Communications in Probability10.1214/19-ECP21924:noneOnline publication date: 1-Jan-2019
  • (2019)Junta Correlation is Testable2019 IEEE 60th Annual Symposium on Foundations of Computer Science (FOCS)10.1109/FOCS.2019.00090(1549-1563)Online publication date: Nov-2019
  • (2018)A Matrix Chernoff Bound for Strongly Rayleigh Distributions and Spectral Sparsifiers from a few Random Spanning Trees2018 IEEE 59th Annual Symposium on Foundations of Computer Science (FOCS)10.1109/FOCS.2018.00043(373-384)Online publication date: Oct-2018

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