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Hi @adioltean ,
Here, you can see transfer functions, which k210 supports, including linear, Relu and leaky.
https://github.com/kendryte/kendryte-model-compiler/blob/master/k210_layer.py
Matrix multiplication is also supported (main calculation of convolution neural network!)
But I'm not sure that only 16 points linear interpolation can manage to do as well as GPU's do in same results.
The restriction is mainly bit precision, because it only support 8 or 16bit calculation, no FP support.
Anyway, multiply of matrix is main process of NN or CNN. And even 8 or 16bit is enough to do transductions.
Maybe it be used in another tasks such as DSP.