Update _forest.py
@@ -1344,6 +1344,8 @@ class RandomForestRegressor(ForestRegressor):
variance reduction as feature selection criterion, "absolute_error"
for the mean absolute error, and "poisson" which uses reduction in
Poisson deviance to find splits.
+ Training using "absolute_error" is significantly slower
+ than when using "squared_error".
.. versionadded:: 0.18
Mean Absolute Error (MAE) criterion.
