How does ai_chance work/is calculated?

[Dlin369]

I'm looking through some event files to see the likelihood of some events firing and I'm having some trouble understanding how event choices are selected by the ai.

How does AI_chance work in HOI4? Is it just the choice weight/divided by sum of all weights? Or is it choose a number between 0 and the choice weight for each choice and then compare which one has the highest value?

I could've sworn i was told the latter was true but the wiki seems to suggest the former. Any help clearing this up would be much appreciated!

 

[Mister Analyst]

This forum thread may give some insight.

 

[bitmode]

https://hoi4.paradoxwikis.com/Event_modding#ai_chance :

(Type: AI chance, default: { base = 1 }) The weight for the AI to pick this option. The probability of each option is its weight divided by the sum of all weights.