How to Replicate Numpy.choose() In Tensorflow?

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To replicate numpy.choose() in tensorflow, you can use the tf.gather() function. The tf.gather() function allows you to index into a tensor along a specified axis to select specific values. You can use this function to achieve similar functionality to numpy.choose() by specifying an index tensor to select values from the input tensor based on the indices provided. This approach allows you to replicate the behavior of numpy.choose() in tensorflow for selecting values from multiple arrays based on an index array.

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What is the limit on the number of choices in TensorFlow choose function?

The TensorFlow choose function allows for selecting from a maximum of 3 choices.


How to add custom logic to TensorFlow choose function?

To add custom logic to the TensorFlow choose function, you can create a custom function that takes the input tensors as arguments, applies your custom logic, and returns the desired output. Here's an example of how you can achieve this:

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import tensorflow as tf

# Define your custom logic function
def custom_choose(input_tensors):
    condition = tf.less_equal(input_tensors[0], input_tensors[1])
    output = tf.where(condition, input_tensors[2], input_tensors[3])
    return output

# Create input tensors
input_a = tf.constant([1, 2, 3])
input_b = tf.constant([2, 2, 2])
input_c = tf.constant([10, 20, 30])
input_d = tf.constant([100, 200, 300])

# Call the custom logic function with the input tensors
output = custom_choose([input_a, input_b, input_c, input_d])

# Create a TensorFlow session and evaluate the output
with tf.Session() as sess:
    result = sess.run(output)
    print(result)


In this example, the custom logic function custom_choose takes four input tensors and applies a custom logic to choose between the third or fourth tensor based on the condition specified by the first two tensors. You can modify the logic inside the custom function according to your requirements.


What is the purpose of the choose function in TensorFlow?

The tf.choose function in TensorFlow is used to choose elements from multiple tensors based on a condition. It allows you to specify a condition and choose elements from two tensors based on whether the condition is true or false. This can be useful for implementing conditional operations in a TensorFlow graph.

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