[Work Log] Likelihood Training

October 19, 2013

Training likelihood

Fitting a three-component GMM resulted in a null model having a higher likelihood than the ground truth model.

Spent a lot of time troubleshooting this and finally realized I had scaled all values up by 100x so Matlab wouldn't choke, but I wasn't accounting for this when evaluating. Blame it on this blasted cold, killing my focus!

Ground truth model looks much better than null model now.


Trying different blurring levels.

In the end, running max likleihood on this will be best, but this gives us a ballpark.


Trying to get KJB EM algorithm working on my 2M element dataset. Getting NaN errors at the moment.

Posted by Kyle Simek
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