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Articles by Shahid Akhtar Khan
Page 15 of 17
PyTorch – How to check if a tensor is contiguous or not?
A contiguous tensor is a tensor whose elements are stored in a contiguous order without leaving any empty space between them. A tensor created originally is always a contiguous tensor. A tensor can be viewed with different dimensions in contiguous manner.A transpose of a tensor creates a view of the original tensor which follows non-contiguous order. The transpose of a tensor is non-contiguous.SyntaxTensor.is_contiguous()It returns True if the Tensor is contiguous; False otherwise.Let's take a couple of example to demonstrate how to use this function to check if a tensor is contiguous or non-contiguous.Example 1# import torch library import torch ...
Read MoreHow to find the transpose of a tensor in PyTorch?
To transpose a tensor, we need two dimensions to be transposed. If a tensor is 0-D or 1-D tensor, the transpose of the tensor is same as is. For a 2-D tensor, the transpose is computed using the two dimensions 0 and 1 as transpose(input, 0, 1).SyntaxTo find the transpose of a scalar, a vector or a matrix, we can apply the first syntax defined below.And for any dimensional tensor, we can apply the second syntax.For
Read MoreHow to get the rank of a matrix in PyTorch?
The rank of a matrix can be obtained using torch.linalg.matrix_rank(). It takes a matrix or a batch of matrices as the input and returns a tensor with rank value(s) of the matrices. torch.linalg module provides us many linear algebra operations.Syntaxtorch.linalg.matrix_rank(input)where input is the 2D tensor/matrix or batch of matrices.StepsWe could use the following steps to get the rank of a matrix or batch of matrices −Import the torch library. Make sure you have it already installed.import torch Create a 2D tensor/matrix or a batch of matrices and print it.t = torch.tensor([[1., 2., 3.], [4., 5., 6.]]) print("Tensor:", t)Compute the rank ...
Read MorePyTorch – How to get the exponents of tensor elements?
To find the exponential of the elements of an input tensor, we can apply Tensor.exp() or torch.exp(input). Here, input is the input tensor for which the exponentials are computed. Both the methods return a new tensor with the exponential values of the elements of the input tensor.SyntaxTensor.exp()ortorch.exp(input) StepsWe could use the following steps to compute the exponentials of the elements of an input tensor −Import the torch library. Make sure you have it already installed.import torchCreate a tensor and print it.t1 = torch.rand(4, 3) print("Tensor:", t1)Compute the exponential of the elements of the tensor. For this, use torch.exp(input) and optionally ...
Read MoreWhat does Tensor.detach() do in PyTorch?
Tensor.detach() is used to detach a tensor from the current computational graph. It returns a new tensor that doesn't require a gradient.When we don't need a tensor to be traced for the gradient computation, we detach the tensor from the current computational graph.We also need to detach a tensor when we need to move the tensor from GPU to CPU.SyntaxTensor.detach()It returns a new tensor without requires_grad = True. The gradient with respect to this tensor will no longer be computed.StepsImport the torch library. Make sure you have it already installed.import torch Create a PyTorch tensor with requires_grad = True and ...
Read MorePyTorch – How to compute element-wise logical XOR of tensors?
torch.logical_xor() computes the element-wise logical XOR of the given two input tensors. In a tensor, the elements with zero values are treated as False and non-zero elements are treated as True. It takes two tensors as input parameters and returns a tensor with values after computing the logical XOR.Syntaxtorch.logical_xor(tensor1, tensor2)where tensor1 and tensor2 are the two input tensors.StepsTo compute element-wise logical XOR of given input tensors, one could follow the steps given below −Import the torch library. Make sure you have it already installed.Create two tensors, tensor1 and tensor2, and print the tensors.Compute torch.logical_xor(tesnor1, tesnor2) and assign the value to ...
Read MoreHow to narrow down a tensor in PyTorch?
torch.narrow() method is used to perform narrow operation on a PyTorch tensor. It returns a new tensor that is a narrowed version of the original input tensor.For example, a tensor of [4, 3] can be narrowed to a tensor of size [2, 3] or [4, 2]. We can narrow down a tensor along a single dimension at a time. Here, we cannot narrow down both dimensions to a size of [2, 2]. We can also use Tensor.narrow() to narrow down a tensor.Syntaxtorch.narrow(input, dim, start, length) Tensor.narrow(dim, start, length)Parametersinput – It's the PyTorch tensor to narrow.dim – It's the dimension along ...
Read MoreHow to perform a permute operation in PyTorch?
torch.permute() method is used to perform a permute operation on a PyTorch tensor. It returns a view of the input tensor with its dimension permuted. It doesn't make a copy of the original tensor.For example, a tensor with dimension [2, 3] can be permuted to [3, 2]. We can also permute a tensor with new dimension using Tensor.permute().Syntaxtorch.permute(input, dims)Parametersinput – PyTorch tensor.dims – Tuple of desired dimensions.StepsImport the torch library. Make sure you have it already installed.import torch Create a PyTorch tensor and print the tensor and the size of the tensor.t = torch.tensor([[1, 2], [3, 4], [5, 6]]) print("Tensor:", ...
Read MoreHow to perform an expand operation in PyTorch?
Tensor.expand() attribute is used to perform expand operation. It expands the Tensor to new dimensions along the singleton dimension.Expanding a tensor only creates a new view of the original tensor; it doesn't make a copy of the original tensor.If you set a particular dimension as -1, the tensor will not be expanded along this dimension.For example, if we have a tensor of size (3, 1), we can expand this tensor along the dimension of size 1.StepsTo expand a tensor, one could follow the steps given below −Import the torch library. Make sure you have already installed it.import torchDefine a tensor ...
Read MoreHow to create tensors with gradients in PyTorch?
To create a tensor with gradients, we use an extra parameter "requires_grad = True" while creating a tensor.requires_grad is a flag that controls whether a tensor requires a gradient or not.Only floating point and complex dtype tensors can require gradients.If requires_grad is false, then the tensor is same as the tensor without the requires_grad parameter.Syntaxtorch.tensor(value, requires_grad = True)Parametersvalue – tensor data, user-defined or randomly generated.requires_grad – a flag, if True, the tensor is included in the gradient computation.OutputIt returns a tensor with requires_grad as True.StepsImport the required library. The required library is torch.Define a tensor with requires_grad = TrueDisplay the ...
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