Merge pull request #6392 from chengduoZH/feature/fix_python_api_doc

Fix v2_API equation for img_pool and maxout format.

Author: chengduo

python/paddle/trainer_config_helpers/layers.py

@@ -2722,15 +2722,15 @@ def img_pool_layer(input,
 
  .. math::
 
- w = 1 + int(ceil(input\_width + 2 * padding - pool\_size) / float(stride))
- h = 1 + int(ceil(input\_height + 2 * padding\_y - pool\_size\_y) / float(stride\_y))
+ w = 1 + \frac{ceil(input\_width + 2 * padding - pool\_size)}{stride} \\\\
+ h = 1 + \frac{ceil(input\_height + 2 * padding\_y - pool\_size\_y)}{stride\_y}
 
  - ceil_mode=False:
 
  .. math::
 
- w = 1 + int(floor(input\_width + 2 * padding - pool\_size) / float(stride))
- h = 1 + int(floor(input\_height + 2 * padding\_y - pool\_size\_y) / float(stride\_y))
+ w = 1 + \frac{floor(input\_width + 2 * padding - pool\_size)}{stride} \\\\
+ h = 1 + \frac{floor(input\_height + 2 * padding\_y - pool\_size\_y)}{stride\_y}
 
  The example usage is:
 
@@ -2863,17 +2863,17 @@ def img_pool3d_layer(input,
 
  .. math::
 
- w = 1 + int(ceil(input\_width + 2 * padding - pool\_size) / float(stride))
- h = 1 + int(ceil(input\_height + 2 * padding\_y - pool\_size\_y) / float(stride\_y))
- d = 1 + int(ceil(input\_depth + 2 * padding\_z - pool\_size\_z) / float(stride\_z))
+ w = 1 + \frac{ceil(input\_width + 2 * padding - pool\_size)}{stride} \\\\
+ h = 1 + \frac{ceil(input\_height + 2 * padding\_y - pool\_size\_y)}{stride\_y} \\\\
+ d = 1 + \frac{ceil(input\_depth + 2 * padding\_z - pool\_size\_z)}{stride\_z}
 
  - ceil_mode=False:
 
  .. math::
 
- w = 1 + int(floor(input\_width + 2 * padding - pool\_size) / float(stride))
- h = 1 + int(floor(input\_height + 2 * padding\_y - pool\_size\_y) / float(stride\_y))
- d = 1 + int(floor(input\_depth + 2 * padding\_z - pool\_size\_z) / float(stride\_z))
+ w = 1 + \frac{floor(input\_width + 2 * padding - pool\_size)}{stride} \\\\
+ h = 1 + \frac{floor(input\_height + 2 * padding\_y - pool\_size\_y)}{stride\_y} \\\\
+ d = 1 + \frac{floor(input\_depth + 2 * padding\_z - pool\_size\_z)}{stride\_z} \\\\
 
  The example usage is:
 
@@ -5428,13 +5428,15 @@ def maxout_layer(input, groups, num_channels=None, name=None, layer_attr=None):
  `Multi-digit Number Recognition from Street View Imagery using Deep Convolutional Neural Networks
  https://arxiv.org/pdf/1312.6082v4.pdf`_
 
+
  .. math::
- y_{si+j} = \max_k x_{gsi + sk + j}
- g = groups
- s = input.size / num_channels
- 0 \le i < num_channels / groups
- 0 \le j < s
- 0 \le k < groups
+ out = \max_k (in[n, k, o_c , s]) \\\\
+ out_{i * s + j} = \max_k in_{ k * o_{c} * s + i * s + j} \\\\
+ s = \frac{input.size}{ num\_channels} \\\\
+ o_{c} =\frac{num\_channels}{groups} \\\\
+ 0 \le i < o_{c} \\\\
+ 0 \le j < s \\\\
+ 0 \le k < groups \\\\
 
  The simple usage is: