[mihevc]

Nice post! For completeness: Apache Arrow is also adding sparse tensors in c++ [1] and wrapping them with python [2] (although the documentation for Python might be a bit lacking at the moment).

[1] https://arrow.apache.org/docs/cpp/api/tensor.html?highlight=...

[2] https://github.com/apache/arrow/blob/master/python/pyarrow/t...