add detection api

doc/fluid/api/gen_doc.sh

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

doc/fluid/api/io.rst

@@ -59,21 +59,3 @@ 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:
-

doc/fluid/api/layers.rst

@@ -181,12 +181,6 @@ Print
 ..  autofunction:: paddle.fluid.layers.Print
     :noindex:
 
-is_empty
---------
-
-..  autofunction:: paddle.fluid.layers.is_empty
-    :noindex:
-
 device
 ======
 
@@ -261,19 +255,6 @@ 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:
-
 nn
 ==
 
@@ -613,30 +594,6 @@ roi_pool
 ..  autofunction:: paddle.fluid.layers.roi_pool
     :noindex:
 
-dice_loss
----------
-
-..  autofunction:: paddle.fluid.layers.dice_loss
-    :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:
-
 ops
 ===
 
@@ -784,12 +741,6 @@ sum
 ..  autofunction:: paddle.fluid.layers.sum
     :noindex:
 
-shape
------
-
-..  autofunction:: paddle.fluid.layers.shape
-    :noindex:
-
 sigmoid
 -------
 
@@ -1039,3 +990,54 @@ zeros
 ..  autofunction:: paddle.fluid.layers.zeros
     :noindex:
 
+detection
+=========
+
+multi_box_head
+--------------
+
+..  autofunction:: paddle.fluid.layers.multi_box_head
+    :noindex:
+
+bipartite_match
+---------------
+
+..  autofunction:: paddle.fluid.layers.bipartite_match
+    :noindex:
+
+target_assign
+-------------
+
+..  autofunction:: paddle.fluid.layers.target_assign
+    :noindex:
+
+detection_output
+----------------
+
+..  autofunction:: paddle.fluid.layers.detection_output
+    :noindex:
+
+ssd_loss
+--------
+
+..  autofunction:: paddle.fluid.layers.ssd_loss
+    :noindex:
+
+detection_map
+-------------
+
+..  autofunction:: paddle.fluid.layers.detection_map
+    :noindex:
+
+iou_similarity
+--------------
+
+..  autofunction:: paddle.fluid.layers.iou_similarity
+    :noindex:
+
+box_coder
+---------
+
+..  autofunction:: paddle.fluid.layers.box_coder
+    :noindex:
+

doc/fluid/api/optimizer.rst

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

doc/fluid/api/profiler.rst

@@ -23,15 +23,3 @@ 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:
-