I am learning about Kalman filters and trying to extend the tutorial a little bit. I have added a few notes and started playing with parameters to try to understand what is going on better. Here is my plot so far:
My first question is, why is the code used to generate the plot not included? Having this code would go a long way in helping beginners play around with the tutorial.
The number of dimensions looks like it is set at 4. I’m not sure why this is because I think we are just plotting using 2 dimensions. The author also claims there are 100 time steps yet it is set at 10.
In my plot, it is hard to tell the difference between noisy signal and the predictions from the filter. As you can see, the measurements and state predictions overlap. I replaced one of the measurements with an outlier:
zs = torch.tensor([ 0.0460, 0.033]), yet the filter is unaffected in predicting state. The optimizer also converges in a few iterations. Enabling a bit more noise in the predictions would help show how the Kalman Filter is modeling the measurement uncertainty
In general, in all of these tutorials, I would like to see the tuning knobs explicitly set at the top of the notebook and maybe a short description as to how they effect the sampling distributions or parameters.