From cd77ba5250ed98ece623730c26af845366847487 Mon Sep 17 00:00:00 2001 From: Michael Orlitzky Date: Sat, 12 Nov 2016 07:35:12 -0500 Subject: [PATCH] Add an epsilon_scale() method for games. When testing, we often need to know how lenient to be when making comparisons. Trying to figure out just how lenient has been a huge source of problems, and ultimately, the scaling factor (applied to ABS_TOL) probably depends on properties of the solution. This commit adds a new method, epsilon_scale(), that returns a safe (very lenient) scaling factor. If things are within epsilon_scale() times ABS_TOL, we consider then equal, or optimal, or whatever. --- dunshire/games.py | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/dunshire/games.py b/dunshire/games.py index a1ac0f5..ae1426a 100644 --- a/dunshire/games.py +++ b/dunshire/games.py @@ -853,6 +853,15 @@ class SymmetricLinearGame: self._L_specnorm_value = specnorm(self.L()) return self._L_specnorm_value + def epsilon_scale(self, solution): + # Don't return anything smaller than 1... we can't go below + # out "minimum tolerance." + norm_p1_opt = norm(solution.player1_optimal()) + norm_p2_opt = norm(solution.player2_optimal()) + scale = self._L_specnorm()*(norm_p1_opt + norm_p2_opt) + return max(1, scale) + + def solution(self): """ Solve this linear game and return a :class:`Solution`. -- 2.44.2