Closed belledon closed 4 years ago
I ran an oracle (1 particle, has gt) and thankfully the markovian physics is equivalent to the full physics
interestingly, adding more particles, even though they ahve the same initial state does lead to some variance in the trace
this gets reflected in the log score of the inference trace
@iyildirim this is what i posted on slack
10 particles on an incongruent task with material prior
i see -- is this like the actual particle filter with proposals etc? It's not trying to simulate ground truth for debuggin purposes?
as of e30d9a4c8555b1f3b6ab7f7d754551c5dde718b4 there a few perplexing issues in the inference trace.
Below is a plot of the weighted particles followed by a visualization of the predictions from the unweighted samples as a function of time. THis is for a scene in which iron is very light.
In the plot there seems to be only 2 hypothesis which is rather weird... My first guess is that there is something with the rejuvinations proposal..
Wrt to the visualization, I'm really not sure what's going on the with the continuity of motion.. its most likely not a bug in the vizualization code as it is mostly the same was it was in the older examples in the fall. My hunch is that it is a bug in the inference analysis/extraction pipeline as motion seems to start and end in reasonable places given the posterior.