josdejong/mathjs
Kronecker product needs a SparseMatrix implementation
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#1,610 opened on 2019/09/06
featurehelp wanted
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説明
The current implementation of the Kronecker product #704 silently changes sparse matrices into dense matrices.
Example:
v1 = math.matrix([0, 2, 3, 0, 0], 'sparse')
v2 = math.matrix([0, 1, 0 -1], 'sparse')
v = math.kron(v1, v2)
Returns v, which is a DenseMatrix even though v1 and v2 areSparseMatrix.
I would expect SparseMatrix instead.
Is it intended behavior?