Calculate message passing examples

FRosner / MasterThesis

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Calculate message passing examples #2

Closed FRosner closed 10 years ago

FRosner commented 10 years ago

example by hand
- w/ message passing
- w/o message passing
same example using OpenGM2 or Infer.net

FRosner commented 10 years ago

I did a very simple example (weather mensa example). I was able to calculate a marginal probability there and I saw what the factors are. I will try to do this in a more complex one however.

I was not able to install Infer.net on Mac OS without using Synaptic. I don't want to screw around with multiple package managers and will probably try this at home again.

FRosner commented 10 years ago

I tried the example from Wikipedia (http://en.wikipedia.org/wiki/Bayesian_network#Example) and was able to calculate the marginal for the grass variable by hand using the sum-product algorithm on the converted factor graph.

I was also able to see how this is related to aggregation operations (extended relational algebra).