josdejong/mathjs

Kronecker product needs a SparseMatrix implementation

Open

#1,610 opened on 2019年9月6日

GitHub で見る
 (5 comments) (0 reactions) (0 assignees)JavaScript (1,298 forks)batch import
featurehelp wanted

Repository metrics

Stars
 (13,832 stars)
PR merge metrics
 (30d に merged PR はありません)

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?

コントリビューターガイド