Created
May 22, 2017 05:37
-
-
Save talolard/1e51ff3946649f687b4059ea5b92786c to your computer and use it in GitHub Desktop.
An example of how to do conv1d ourself in Tensorflow
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
import tensorflow as tf | |
def conv1d(input_, output_size, width, stride): | |
''' | |
:param input_: A tensor of embedded tokens with shape [batch_size,max_length,embedding_size] | |
:param output_size: The number of feature maps we'd like to calculate | |
:param width: The filter width | |
:param stride: The stride | |
:return: A tensor of the concolved input with shape [batch_size,max_length,output_size] | |
''' | |
inputSize = input_.get_shape()[-1] # How many channels on the input (The size of our embedding for instance) | |
#This is the kicker where we make our text an image of height 1 | |
input_ = tf.expand_dims(input_, axis=1) # Change the shape to [batch_size,1,max_length,output_size] | |
#Make sure the height of the filter is 1 | |
filter_ = tf.get_variable("conv_filter",shape=[1, width, inputSize, output_size]) | |
#Run the convolution as if this were an image | |
convolved = tf.nn.conv2d(input_, filter=filter_,strides=[1, 1, stride, 1], padding="SAME") | |
#Remove the extra dimension, eg make the shape [batch_size,max_length,output_size] | |
result = tf.squeeze(convolved, axis=1) | |
return result |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment