Revert "DOC Fix math typo in model_evaluation's explained_variance (scikit-learn#12747)"

qinhanmin2014 · Xing · commit ddce8241f0b3 · 2019-04-28T15:15:28.000-04:00
This reverts commit bf2f648.
diff --git a/doc/modules/model_evaluation.rst b/doc/modules/model_evaluation.rst
@@ -1618,7 +1618,7 @@ then the explained variance is estimated as follow:
 
 .. math::
 
-  \texttt{explained_variance}(y, \hat{y}) = 1 - \frac{Var\{ y - \hat{y}\}}{Var\{y\}}
+  \texttt{explained\_{}variance}(y, \hat{y}) = 1 - \frac{Var\{ y - \hat{y}\}}{Var\{y\}}
 
 The best possible score is 1.0, lower values are worse.
 
