Fast matrix rank algorithms and applications

  • Authors:
  • Ho Yee Cheung;Tsz Chiu Kwok;Lap Chi Lau

  • Affiliations:
  • The Chinese University of Hong Kong, Hong Kong, China;The Chinese University of Hong Kong, Hong Kong, China;The Chinese University of Hong Kong, Hong Kong, China

  • Venue:
  • STOC '12 Proceedings of the forty-fourth annual ACM symposium on Theory of computing
  • Year:
  • 2012

Quantified Score

Hi-index 0.00

Visualization

Abstract

We consider the problem of computing the rank of an mxn matrix A over a field. We present a randomized algorithm to find a set of r = rank(A) linearly independent columns in O(|A| + rw) field operations, where |A| denotes the number of nonzero entries in A and w w). Our algorithm is faster when r