computation of mae

sao/utils/analysis.py

@@ -59,6 +59,9 @@ class FitterAnalysis(Analysis):
     def coefficient_of_determination(self, surrogate):
         return r2_score(self.ytest, surrogate.predict(self.xtest))
 
+    def mae(self, surrogate):
+        return np.mean(np.abs(self.ytest - surrogate.predict(self.xtest)))
+
 #########################################
 # OptimizerAnalysis
 #########################################