Game Theory 101 (#74): Perfect Bayesian Equilibrium

gametheory101.com/courses/game...
This lecture begins a new unit on sequential games of incomplete information. Perfect Bayesian equilibrium is the gold standard solution concept for these games. This lecture gives the definition and explains where it gets its core components. Future lectures will show PBE in action. Look further down the playlist if you are trying to find an explanation of pooling equilibrium, separating equilibrium, or semi-separating/partially pooling equilibrium.

[@chulainnbork5515]

Watched entire playlist in 3 days. Great videos. I used the textbook A Guide to Game Theory by Fiona Carmichael along side these videos.

[@ska2976]

You are literally saving my degree! I always leave the lecture hall confused, but I get it after your videos.

[@linetteelnef5461]

So, how do you solve the perfect bayesian equilibrium? - same way as the bayesian nash equilibrium?

[@fanxilin7306]

This makes things clearer than my uni lecture

[@marcelopignatari9528]

Hi, there is no bayesian equilibirum in your book. Where can I find a written version?

[@increase3067]

Please what of getting sequential equilibrium and perfect equilibrium in extensive form game with incomplete information. I really need help with that

[@PunmasterSTP]

Did you have a specific question in mind?

[@albertchen5501]

One critical question: is there any general method to estimate the payoff functions of a linear combination of state variables from field data? Are the coefficients from logistic regression acceptable? My concern was that this approach is to maximize likelihood without any game procedure inside. Also the mixed strategies probability should be different from the distribution of real data.

[@Gametheory101]

It seems like you'd be interested in quantal response equilibrium: en.wikipedia.org/wiki/Quantal_response_equilibrium

[@albertchen5501]

William Spaniel Thank you! That's exactly what I'm looking for:)

[@PunmasterSTP]

@@Gametheory101 Wow, it seems like different types of games really Span many different types of equilibria…

[@wanjadouglas3058]

Is PBE also WPBE?

[@nottt5203]

Hey how come no evolutionary game theory in game theory 101?

[@PunmasterSTP]

Sequentially rational? More like “Snap, this is unbelievable!” At the beginning of this series, I had no idea how advanced (and cool) things would get!

[@ossamanazih994]

please your email i want to ask about something on bargaining game, Best Regards

[@PunmasterSTP]

Why not ask it in a comment?

[@pooplordpoopsen5282]

Man I cant tell you how much I hate bayesian stuff. Already hated it during Logic. xD

[@Boxandpaperss]

me too man... like any of it doesn't seem to apply to real life for me. sucks that i have a finals paper on it tomorrow

[@PunmasterSTP]

@@Boxandpaperss How did your finals paper go?

[@Boxandpaperss]

@@PunmasterSTP yeah I got a C bro... hahaha

[@PunmasterSTP]

@@Boxandpaperss Hey, as long as you pass the class and are able to do what you want to do, there's not much difference between an A and a C.

[@fernandoavalos5528]

@@Boxandpaperss Bayesian has a lot of implications for real life. If anything, it not only tells that beliefs should be updated upon receival of new data but also in what magnitude. Doesn't that sound applicable to real life?

[@jaspermj.2214]

fuck i found this too late

[@trejohnson7677]

game theory's colloquialism's are so unnecessarily convoluted. it's laughable.