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Using Dynamic Bayes Nets

1. Create DBN

2. Generate time expansion

3. Compile and use

Compile the Bayes net for probabilistic inference with Network Compile.  Turn on automatic updating, if it isn’t already, by toggling Network Automatic Updating, so the menu item is check-marked.  Experiment with setting the position or velocity (by clicking on the desired interval) to indicate observations at certain times, and see how the beliefs for position and velocity at all other times change.

You can also try entering some negative findings by holding down the shift key when you click on the interval.

Remember that the numerical results will not be exact, due to the discretization and sampling error in converting the equations to probability tables.  You may also want to try a finer discretization by changing the Discretization of the original unexpanded net.

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