josdejong/mathjs

Kronecker product needs a SparseMatrix implementation

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#1,610 创建于 2019年9月6日

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 (5 评论) (0 反应) (0 负责人)JavaScript (1,298 fork)batch import
featurehelp wanted

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描述

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?

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