Posterior probabilities rounded?

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Meiner
Posts: 2
Joined: Thu Jan 19, 2017 1:57 pm

Posterior probabilities rounded?

Post by Meiner »

Hi,
I have a question about the posterior probability distributions that are calculated for the individual nodes. Does GeNIe rounds the values up or down? I've been testing different combinations of input evidence and I experienced a few times that the probability distribution of individual nodes sometimes added up to either 99 or 101%.
shooltz[BayesFusion]
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Joined: Mon Nov 26, 2007 5:51 pm

Re: Posterior probabilities rounded?

Post by shooltz[BayesFusion] »

I have a question about the posterior probability distributions that are calculated for the individual nodes.
The rounding is performed only for display purposes (the actual calculations are done using double precision floating point numbers).

I assume you're asking about rounding in the barchart display of the nodes. The algorithm rounds up when the first non displayed digit is 5 or greater, or down otherwise.

Note that you can increase the display precision using Tools|Options|Decimals in chance node barcharts.
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