Fast computation of low rank matrix

  title={Fast computation of low rank matrix},
  author={Dimitris Achlioptas and Frank McSherry},
Given a matrix <italic>A</italic> it is often desirable to find an approximation to <italic>A</italic> that has low rank. We introduce a simple technique for accelerating the computation of such approximations when <italic>A</italic> has strong spectral structure, i.e., when the singular values of interest are significantly greater than those of a random matrix with size and entries similar to <italic>A</italic>. Our technique amounts to independently sampling and/or quantizing the entries of… CONTINUE READING
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