PyTorch Max: Get Maximum Value Of A PyTorch Tensor
PyTorch Max - Use PyTorch's max operation to calculate the max of a PyTorch tensor
< > Code:
You must be a Member to view code
Access all courses and lessons, gain confidence and expertise, and learn how things work and how to use them.
or Log In
This video will show you how to use PyTorch’s max operation to calculate the max of a PyTorch tensor.
First, we import PyTorch.
Then we check what version of PyTorch we are using.
We are using PyTorch version 0.4.1.
Let’s next create the tensor we’ll use for the PyTorch max operation example.
tensor_max_example = torch.tensor( [ [ [1, 1, 1], [2, 2, 2], [3, 3, 3] ], [ [4, 4, 4], [5,50, 5], [6, 6, 6] ] ] )
So here we have torch.tensor which creates a floating tensor.
We have a 2x3x3 tensor that we’re going to assign to the Python variable tensor_max_example.
Visually, we can see that the max is going to be the number 50.
Let’s print the tensor_max_example Python variable to see what we have.
We see that it’s a PyTorch tensor, we see that it is 2x3x3, and we still visually see that the max is going to be 50.
Next, let’s calculate the max of a PyTorch tensor using PyTorch tensor’s max operation.
tensor_max_value = torch.max(tensor_max_example)
So torch.max, we pass in our tensor_max_example, and we assign the value that’s returned to the Python variable tensor_max_value.
Let’s print the tensor_max_value variable to see what we have.
We see that the max value is 50.
The one thing to note is that PyTorch returns the max value inside of a 0-dimensional tensor with the value of 50 inside of it.
Let’s double check to see what it is by using Python’s type operation.
We can see that it’s the class of torch.Tensor.
So it is a PyTorch tensor that is returned with the max value inside of it.
Let’s use PyTorch’s item operation to get the value out of the 0-dimensional tensor.
And now, we get the number 50.
And just to make sure it’s a number, let’s use the Python type operation to check that this is actually a number.
And we see that it is a Python of class "int" for integer.
Perfect! We were able to use PyTorch’s max operation to calculate the max of a PyTorch tensor.