** Demonstration of the PRISM software**

In this section, the change in the density of the matrix when SYISDA algorithm is applied to a matrix is shown.
The test matrix is of order 200. Depending on the property of
the eigenvalues, there are three options for you to choose:
- all eigenvalues,
- eigenvalues in (-0.5, 0.0], or
- exponentially distributed eigenvalues in (-0.5, -0.1].

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