MATLAB: Computing generalized Inverse of a square but sparse matrix

inversionsparse

I am trying to find the generalized inverse of a square and sparse matrix. I am using Matlab, however pinv(matrix) doesn't work for sparse matrices. If you have any suggestion or algorithm, please share. Thanks in advance.

Best Answer

Hi,
The disadvantages of using ‘pinv’ to find inverse of sparse matrix are:
  1. ‘pinv’ requires costly SVD.
  2. ‘pinv’ does not work with sparse matrix.
Instead, you can use the function ‘pseudo-inverse’ for the same purpose. Refer the following link for documentation of ‘pseudo-inverse’ function.
Hope this helps!
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