Bound for the L2 Norm of Random Matrix and Succinct Matrix Approximation

  • Authors:
  • Rong Liu;Nian Yan;Yong Shi;Zhengxin Chen

  • Affiliations:
  • Research Center on Fictitious Economy and Data Science, Chinese Academy of Sciences, Beijing, China 100080;College of Information Science and Technology, University of Nebraska at Omaha, Omaha, USA NE 68182;School of Mathematical Science, Graduate University of Chinese Academy of Sciences, Beijing, China 100049;College of Information Science and Technology, University of Nebraska at Omaha, Omaha, USA NE 68182

  • Venue:
  • ICCS '08 Proceedings of the 8th international conference on Computational Science, Part II
  • Year:
  • 2008

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Abstract

This work furnished a sharper bound of exponential form for the L2norm of an arbitrary shaped random matrix. Based on the newly elaborated bound, a non-uniform sampling method was developed to succinctly approximate a matrix with a sparse binary one and hereby to relieve the computation loads in both time and storage. This method is not only pass-efficient but query-efficient also since the whole process can be completed in one pass over the input matrix and the sampling and quantizing are naturally combined in a single step.