Fix the problem that metric cannot display

doc/fluid/api/gen_doc.sh

 #!/bin/bash
-python gen_doc.py layers --submodules control_flow device io nn ops tensor detection learning_rate_scheduler > layers.rst
+python gen_doc.py layers --submodules control_flow device io nn ops tensor detection learning_rate_scheduler metric > layers.rst
 
 for module in data_feeder clip metrics executor initializer io nets optimizer param_attr profiler regularizer
 do

doc/fluid/api/initializer.rst

@@ -33,6 +33,13 @@ Xavier
     :members:
     :noindex:
 
+Bilinear
+--------
+
+..  autoclass:: paddle.fluid.initializer.Bilinear
+    :members:
+    :noindex:
+
 force_init_on_cpu
 -----------------
 
@@ -73,3 +80,10 @@ XavierInitializer
     :members:
     :noindex:
 
+BilinearInitializer
+-------------------
+
+..  autoclass:: paddle.fluid.initializer.BilinearInitializer
+    :members:
+    :noindex:
+

doc/fluid/api/io.rst

@@ -59,3 +59,39 @@ get_inference_program
 ..  autofunction:: paddle.fluid.io.get_inference_program
     :noindex:
 
+save_checkpoint
+---------------
+
+..  autofunction:: paddle.fluid.io.save_checkpoint
+    :noindex:
+
+load_checkpoint
+---------------
+
+..  autofunction:: paddle.fluid.io.load_checkpoint
+    :noindex:
+
+clean_checkpoint
+----------------
+
+..  autofunction:: paddle.fluid.io.clean_checkpoint
+    :noindex:
+
+load_persist_vars_without_grad
+------------------------------
+
+..  autofunction:: paddle.fluid.io.load_persist_vars_without_grad
+    :noindex:
+
+save_persist_vars_without_grad
+------------------------------
+
+..  autofunction:: paddle.fluid.io.save_persist_vars_without_grad
+    :noindex:
+
+get_latest_checkpoint_serial
+----------------------------
+
+..  autofunction:: paddle.fluid.io.get_latest_checkpoint_serial
+    :noindex:
+

doc/fluid/api/layers.rst

@@ -181,6 +181,12 @@ Print
 ..  autofunction:: paddle.fluid.layers.Print
     :noindex:
 
+is_empty
+--------
+
+..  autofunction:: paddle.fluid.layers.is_empty
+    :noindex:
+
 device
 ======
 
@@ -219,6 +225,12 @@ Send
 ..  autofunction:: paddle.fluid.layers.Send
     :noindex:
 
+Recv
+----
+
+..  autofunction:: paddle.fluid.layers.Recv
+    :noindex:
+
 open_recordio_file
 ------------------
 
@@ -255,6 +267,25 @@ double_buffer
 ..  autofunction:: paddle.fluid.layers.double_buffer
     :noindex:
 
+random_data_generator
+---------------------
+
+..  autofunction:: paddle.fluid.layers.random_data_generator
+    :noindex:
+
+Preprocessor
+------------
+
+..  autoclass:: paddle.fluid.layers.Preprocessor
+    :members:
+    :noindex:
+
+load
+----
+
+..  autofunction:: paddle.fluid.layers.load
+    :noindex:
+
 nn
 ==
 
@@ -399,10 +430,9 @@ conv2d_transpose
 conv3d_transpose
 ----------------
 
-..  autofunction:: paddle.fluid.layers.conv2d_transpose
+..  autofunction:: paddle.fluid.layers.conv3d_transpose
     :noindex:
 
-
 sequence_expand
 ---------------
 
@@ -613,6 +643,48 @@ roi_pool
 ..  autofunction:: paddle.fluid.layers.roi_pool
     :noindex:
 
+dice_loss
+---------
+
+..  autofunction:: paddle.fluid.layers.dice_loss
+    :noindex:
+
+image_resize
+------------
+
+..  autofunction:: paddle.fluid.layers.image_resize
+    :noindex:
+
+image_resize_short
+------------------
+
+..  autofunction:: paddle.fluid.layers.image_resize_short
+    :noindex:
+
+resize_bilinear
+---------------
+
+..  autofunction:: paddle.fluid.layers.resize_bilinear
+    :noindex:
+
+gather
+------
+
+..  autofunction:: paddle.fluid.layers.gather
+    :noindex:
+
+random_crop
+-----------
+
+..  autofunction:: paddle.fluid.layers.random_crop
+    :noindex:
+
+mean_iou
+--------
+
+..  autofunction:: paddle.fluid.layers.mean_iou
+    :noindex:
+
 ops
 ===
 
@@ -718,12 +790,6 @@ logical_not
 ..  autofunction:: paddle.fluid.layers.logical_not
     :noindex:
 
-uniform_random
---------------
-
-..  autofunction:: paddle.fluid.layers.uniform_random
-    :noindex:
-
 uniform_random_batch_size_like
 ------------------------------
 
@@ -742,12 +808,6 @@ gaussian_random_batch_size_like
 ..  autofunction:: paddle.fluid.layers.gaussian_random_batch_size_like
     :noindex:
 
-cumsum
-------
-
-..  autofunction:: paddle.fluid.layers.cumsum
-    :noindex:
-
 scatter
 -------
 
@@ -760,6 +820,30 @@ sum
 ..  autofunction:: paddle.fluid.layers.sum
     :noindex:
 
+slice
+-----
+
+..  autofunction:: paddle.fluid.layers.slice
+    :noindex:
+
+polygon_box_transform
+---------------------
+
+..  autofunction:: paddle.fluid.layers.polygon_box_transform
+    :noindex:
+
+shape
+-----
+
+..  autofunction:: paddle.fluid.layers.shape
+    :noindex:
+
+maxout
+------
+
+..  autofunction:: paddle.fluid.layers.maxout
+    :noindex:
+
 sigmoid
 -------
 
@@ -916,18 +1000,6 @@ stanh
 ..  autofunction:: paddle.fluid.layers.stanh
     :noindex:
 
-hard_shrink
------------
-
-..  autofunction:: paddle.fluid.layers.hard_shrink
-    :noindex:
-
-thresholded_relu
-----------------
-
-..  autofunction:: paddle.fluid.layers.thresholded_relu
-    :noindex:
-
 hard_sigmoid
 ------------
 
@@ -940,6 +1012,30 @@ swish
 ..  autofunction:: paddle.fluid.layers.swish
     :noindex:
 
+uniform_random
+--------------
+
+..  autofunction:: paddle.fluid.layers.uniform_random
+    :noindex:
+
+hard_shrink
+-----------
+
+..  autofunction:: paddle.fluid.layers.hard_shrink
+    :noindex:
+
+cumsum
+------
+
+..  autofunction:: paddle.fluid.layers.cumsum
+    :noindex:
+
+thresholded_relu
+----------------
+
+..  autofunction:: paddle.fluid.layers.thresholded_relu
+    :noindex:
+
 tensor
 ======
 
@@ -997,6 +1093,18 @@ fill_constant
 ..  autofunction:: paddle.fluid.layers.fill_constant
     :noindex:
 
+argmin
+------
+
+..  autofunction:: paddle.fluid.layers.argmin
+    :noindex:
+
+argmax
+------
+
+..  autofunction:: paddle.fluid.layers.argmax
+    :noindex:
+
 ones
 ----
 
@@ -1012,6 +1120,12 @@ zeros
 detection
 =========
 
+prior_box
+---------
+
+..  autofunction:: paddle.fluid.layers.prior_box
+    :noindex:
+
 multi_box_head
 --------------
 
@@ -1099,3 +1213,18 @@ noam_decay
 ..  autofunction:: paddle.fluid.layers.noam_decay
     :noindex:
 
+metric
+======
+
+accuracy
+--------
+
+..  autofunction:: paddle.fluid.layers.accuracy
+    :noindex:
+
+auc
+---
+
+..  autofunction:: paddle.fluid.layers.auc
+    :noindex:
+

doc/fluid/api/optimizer.rst

@@ -89,6 +89,13 @@ DecayedAdagradOptimizer
     :members:
     :noindex:
 
+RMSPropOptimizer
+----------------
+
+..  autoclass:: paddle.fluid.optimizer.RMSPropOptimizer
+    :members:
+    :noindex:
+
 Adadelta
 --------
 

doc/fluid/api/profiler.rst

@@ -23,3 +23,15 @@ profiler
 ..  autofunction:: paddle.fluid.profiler.profiler
     :noindex:
 
+start_profiler
+--------------
+
+..  autofunction:: paddle.fluid.profiler.start_profiler
+    :noindex:
+
+stop_profiler
+-------------
+
+..  autofunction:: paddle.fluid.profiler.stop_profiler
+    :noindex:
+