44. Install PyTorch and First Tensors
44.2 What Is a Tensor
Why. NumPy arrays hold numbers. PyTorch tensors do too — and they track gradients when needed for learning.
What. A tensor is a multi-dimensional number container: scalar, vector, matrix, or higher. Same spirit as NumPy ndarray, with autograd superpowers.
How.
Make three tensors
- From a Python list.
- Zeros / ones helpers.
- Check
.shapeand.dtype.
import torch
x = torch.tensor([1.0, 2.0, 3.0])
Z = torch.zeros(2, 3)
print(x, x.shape, x.dtype)
print(Z)
Ravindra Bagale's Tip
Tensor = smart box of numbers. Shape nehmi print kara — debug 50% solve.