Skip to content

Create 34. One hot encoding.py #553

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Create 34. One hot encoding.py #553

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
15 changes: 15 additions & 0 deletions 34. One hot encoding.py
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,15 @@
import torch
from typing import Optional

def to_categorical(x: torch.Tensor, n_col: Optional[int] = None) -> torch.Tensor:
"""
Perform one-hot encoding on a 1D integer tensor `x`. If `n_col` is not provided, infer it from the max value in `x`.
"""
if n_col is None:
n_col = x.max().item() + 1

x = x.to(torch.long)
one_hot = torch.nn.functional.one_hot(x, num_classes=n_col)
one_hot = one_hot.float()

return one_hot