Tensorflow.js tf.layers.alphaDropout() Function

Tensorflow.js is an open-source library developed by Google for running machine learning models and deep learning neural networks in the browser or node environment. It also helps the developers to develop ML models in JavaScript language and can use ML directly in the browser or Node.js.

The tf.layers.AlphaDropout() function is used to apply Alpha Dropout to the input. Since it is a regularization layer hence, it is only active at training time.

Syntax:

tf.layers.AlphaDropout(arguments)

Parameters

• inputShape : It is an optional parameter which is used to create the input layer, and it takes values like number and null.
• batchInputShape : It is an optional parameter which is used to create the input layer before the main layer, and it takes values like number and null.
• batchSize : It is an optional parameter used to make batchInputShape, and, and it accepts only numbers.
• dtype : It is an optional parameter, and it stands for data type. By default, it has ‘float32’ and also supports other values like ‘int32’, ‘bool’ etc.
• name: It is an optional parameter and is used to define the name of the layer, and it accepts strings.
• trainable : It is an optional parameter that determines the provided input layers are updated or not. It accepts boolean values.
• weights : It possesses the starting weights of the layer. It is also an optional parameter.
• inputDType : It is an optional parameter used for input data type. Like dtype it also supports all its values.

Return Value: It returns AlphaDropout.

Example 1:

Javascript

// Importing the tensorflow.js library
import * as tf from "@tensorflow/tfjs"

// Initializing the tensor
const geek= tf.tensor1d([121, 152, 2213, 7814]);

// Reshaping tensor
const geek1 = tf.reshape(geek,[2,2]);

// Creating alphaDropout of poolSize 2*2
const alphaDropout =
      tf.layers.alphaDropout({poolSize:[2,2]});

// Applying alphaDropout on geek1 tensor
const result = alphaDropout.apply(geek1);

//Printing the result tensor
result.print();

Output:

Tensor
    [[121 , 152 ],
     [2213, 7814]]

Example 2:

Javascript

// Importing the tensorflow.js library
import * as tf from "@tensorflow/tfjs"

// Reshaping tensor
const geek1 = tf.reshape(
  tf.tensor1d([25, 163, 127, 328]),
  [2,2]);

// Applying alphaDropout on geek1 tensor
tf.layers.alphaDropout(
  {
    poolSize:[2,2]
  }
).apply(
  geek1).print();

Output:

Tensor
    [[25 , 163],
     [127, 328]]

Reference: https://js.tensorflow.org/api/3.6.0/#layers.alphaDropout