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Descrizione
Feature description
A tensor representation that only stores data for positions where the value non-zero. Operations on sparse tensors could then be optimized based on the fact that most of the tensor is empty and only a few points need to be computed.
Feature motivation
Sometimes I (and others) deal with cases where tensors are always largely empty (often less than 1% full). In such cases, it would much more efficient (memory-wise and computationally) to only store data for indexes that are used. This is especially important for scenarios when the tensor would be very large if it were represented in a dense representation.
(Optional) Suggest a Solution
I don't have a concrete idea how this might be implemented, I imagine existing libraries (such as sprs in rust, or in other ecosystems) can serve as inspiration.