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AvgPool2D

Description

Define the average pooling 2D layer according to its parameters. To be used for the TimeDistributed layer. Type : polymorphic.

 

Input parameters

 

parameters : layer parameters.

 size : integer array, factors by which to downscale (vertical, horizontal). (2, 2)will halve the input in both spatial dimension. If only one integer is specified, the same window length will be used for both dimensions.
Default value “[2,2]”.
 stride : integer array, strides values.
Default value “[0,0]”.
 padding : boolean, “valid“or “same“. “valid” means no padding. “same” results in padding evenly to the left/right or up/down of the input such that output has the same height/width dimension as the input.
Default value “False”.
 data_format : enum, one of channels_last or channels_first (default) . The ordering of the dimensions in the inputs. channels_last corresponds to inputs with shape (batch, height, width, channels) while channels_first corresponds to inputs with shape (batch, channels, height, width).
Default value “channels_first”.
 training? : boolean, whether the layer is in training mode (can store data for backward).
Default value “True”.
 lda_coeff : float, defines the coefficient by which the loss derivative will be multiplied before being sent to the previous layer (since during the backward run we go backwards).
Default value “1”.

 

Output parameters

 

AvgPool2D out : layer average pooling 2D architecture.

Example

All these exemples are snippets PNG, you can drop these Snippet onto the block diagram and get the depicted code added to your VI (Do not forget to install HAIBAL library to run it).

AvgPool2D layer inside TimeDistributed layer

1 – Generate a set of data

We generate an array of data of type single and shape [batch_size = 10, time = 6, channels = 7, rows = 5, cols = 3].

2 – Define graph

First, we define the first layer of the graph which is an Input layer (explicit input layer method). This layer is setup as an input array shaped [time = 6, channels = 7, rows = 5, cols = 3].
Then, we add to the graph the TimeDistributed layer which we setup with a AvgPool2D layer using the define method.

3 – Run graph

We call the forward method and retrieve the result with the “Prediction 5D” method.
This method returns two variables, the first one is the layer information (cluster composed of the layer name, the graph index and the shape of the output layer) and the second one is the prediction with a shape of [batch_size, time, channels, rows, cols].

 

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