NashCoding Yet Another Artificial Intelligence Blog

29Sep/106

Evolving Nash Equilibria – A Quick Correction

As I noted in my first post, I was a little skeptical about whether a Nash Equilibrium (NE) could be evolved by taking the squared loss of each hand. My conclusions were that, given an expected value evaluation function, it was possible using a best-opponent fitness but not using a squared-loss fitness. There turns out to be a small bug in the squared loss code which caused a big change in results. Below are the results for the correct fitness function implementation.