Sparse arrays (scipy.sparse) — SciPy v1.15.3 Manual

Note This package is switching to an array interface, compatible with NumPy arrays, from the older matrix interface. We recommend that you use the array objects (bsr_array, coo_array, etc.) for all new work. When using the array interface, please note that: x * y no longer performs matrix multiplication, but element-wise multiplication (just like with NumPy arrays). To make code work with both arr

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疎行列パッケージ