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ar.sparse.diagMatvecInvSqrt
Create an inverse-sqrt-diagonal matrix-vector product function.
Syntax
ar.sparse.diagMatvecInvSqrt(diagonal, tol?)
Description
Create an inverse-sqrt-diagonal matrix-vector product function. Computes y = D^{-1/2} * x where D is diagonal with positive entries. Useful for symmetric normalization of Laplacians.
Parameters
| Name | Description |
|---|---|
| diagonal | - Diagonal entries (must be positive) |
| tol(optional) | - Tolerance for "zero" entries (default 1e-14) |
Returns
MatVecFunction