torch.Tensor.to_sparse_csc

Tensor.to_sparse_csc() → Tensor

Convert a tensor to compressed column storage (CSC) format. Only works with 2D tensors.

Example:

>>> dense = torch.randn(5, 5)
>>> sparse = dense.to_sparse_csc()
>>> sparse._nnz()
25

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https://pytorch.org/docs/1.13/generated/torch.Tensor.to_sparse_csc.html

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