[petra]

Theoretically , Analog is by far the best for neural networks. But why aren't we starting to see chips offered ? Heck even an old process like 130nm could have some practical uses .

[alexmlamb2]

Could you implement an approximate matrix multiplication in a direct analogue way? If so, I wonder why it hasn't been used for graphics cards.

[p1esk]

Yes: https://arxiv.org/abs/1610.02091