rename nmse

Author: zsdonghao

docs/modules/cost.rst

@@ -120,7 +120,7 @@ to the cost function.
    sigmoid_cross_entropy
    binary_cross_entropy
    mean_squared_error
-   normalize_mean_squared_error
+   normalized_mean_square_error
    dice_coe
    dice_hard_coe
    iou_coe
@@ -150,9 +150,9 @@ Mean squared error
 -------------------------
 .. autofunction:: mean_squared_error
 
-Normalized mean squared error
+Normalized mean square error
 --------------------------------
-.. autofunction:: normalize_mean_squared_error
+.. autofunction:: normalized_mean_square_error
 
 Dice coefficient
 -------------------------

tensorlayer/cost.py

@@ -102,7 +102,7 @@ def mean_squared_error(output, target, is_mean=False):
                 mse = tf.reduce_mean(tf.reduce_sum(tf.squared_difference(output, target), [1, 2, 3]))
         return mse
 
-def normalize_mean_squared_error(output, target):
+def normalized_mean_square_error(output, target):
     """Return the TensorFlow expression of normalized mean-squre-error of two distributions.
 
     Parameters