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Dev3.2.0 #463

Merged
merged 18 commits into from
Jun 1, 2015
Merged

Dev3.2.0 #463

merged 18 commits into from
Jun 1, 2015

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mreposa
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@mreposa mreposa commented Jun 1, 2015

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Mike Reposa and others added 18 commits May 1, 2015 11:35
Use a filter, instead of a set subtraction, to avoid iterating through state.assigned every time
Two other instances where a set subtraction operation would be faster as a filter
Removed the observation init from MH. This means that the sampler might
start from a state that violates the conditions, but the models is still
in a valid state (ie, valid according to its generative model).

This fix also uncovered another MH bug that was found from the decision
tests. In the MultiDecisionTest example, it was recording decisions
values and expected utilities for non-valid combinations. Meaning, the
expected utility of a decision was a value that was not possible based
on the model.

It turns out that this bug has to do with the update function in MH.
This function was repeatedly visiting elements to update, but not in the
correct order. I couldn't figure out the exact nature of the bug, but
when you have a model with A->B and (A,B)->C, you would get B updated,
then C, then B again. This was incorrect.

The solution is I just rewrote the updateMany function to do a recursive
pass through the dependencies. Visiting elements in generative order is
a repeated operation throughout Figaro (MH, IS, Forward sampling) and we
really should create a unified visiting method for all algorithms.
Fix OnlineEM bug (#461)
mreposa added a commit that referenced this pull request Jun 1, 2015
@mreposa mreposa merged commit 2b6d4f9 into master Jun 1, 2015
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3 participants