Hello Clemens, thank you for your ESN implementation, which really helps me a lot in my research. Youuse `np.linalg.pinv` in your evaluation of `W_out` at line 192, `pyESN.py`, which can make it unstable. When I tried to transplant it from Numpy (default float type `double`) to PyTorch (default float type `float32`), the network cannot run correctly . It may be better to use `self.W_out = np.linalg.lstsq(extended_states[transient:, :], self.inverse_out_activation(teachers_scaled[transient:, :])).T` or `self.W_out = np.linalg.solve(extended_states[transient:, :], self.inverse_out_activation(teachers_scaled[transient:, :])).T`. Thanks!