At least there is work on greatly generalizing convolutions. They're much more broadly applicable (in neural networks) to very differently structured data than

At least there is work on greatly generalizing convolutions. They're much more broadly applicable (in neural networks) to very differently structured data than they appear to be in their standard form. (The "in neural networks" qualifier is there because quite a bit of this has been understood about the mathematical operation convolution for a long long time). Some recent developments: * https://arxiv.org/abs/2010.03633 https://arxiv.org/abs/2010.03633 (disclosure: I'm one of the authors) * https://arxiv.org/abs/2012.06333 https://arxiv.org/abs/2012.06333