Handling biffurcations in the tracer#955
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Issues closed by this PR
Related to Fix #492: Optimization and Stability Enhancements in Logit´s path follower #876
Description of the changes in this PR
This PR introduces several mathematical and structural improvements to the QRE (Quantal Response Equilibrium) tracing algorithm to increase convergence stability and prevent crashes, particularly in edge-case games.
It also adds an entry in
Changelog.How to review this PR
-Review the symmetry-breaking logic.
-Run gambit-logit on team_mp.txt to confirm it now reaches the Nash Equilibrium successfully without getting stuck in the bifurcation.
The mathematical explanation can be found here: https://github.com/AndresFerCervell/GSoC-2026-Gambit-Portfolio/blob/main/Gambit_Logit_Algorithm.pdf