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Difference between 'equilibrium vi' and 'vi' in EMP

Posted: Wed May 08, 2019 7:17 pm
by jshengdb
Hi All,

I have a question between the difference between syntax 'equilibrium vi' and 'vi' in the EMP framework. Now I have a strongly monotone VI problem that can be solved by both syntax. However, the solution they give is quite different. I am just wondering what cause this situation.


Re: Difference between 'equilibrium vi' and 'vi' in EMP

Posted: Thu May 09, 2019 10:40 pm
by dirkse

An equilibrium model is a collection of agent models, where each agent controls a subset of the variables. If agent A controls x, then agents B and C treat x as a constant, but of course it can and will change as agent A chooses. The models for the different agents can be a combination of VI, min, or max models.

A VI can also exist in isolation - not as part of an equilibrium model.