PyTorch One Hot Encoding


PyTorch has a one_hot() function for converting class indices to one-hot encoded targets.

Numpy Pad: Understanding np.pad()


The np.pad() function has a complex, powerful API. But basic usage is very simple and complex usage is achievable! This post shows you how to use NumPy pad and gives a couple examples.

Installing Packages in a Jupyter Notebook


This post describes a trick for installing/upgrading Python packages in a Jupyter notebook. It’s useful for scratch code, but don’t do this when you need reproducible code.

Normalizing Images in PyTorch


You can use the torchvision Normalize() transform to subtract the mean and divide by the standard deviation for image tensors in PyTorch. But it’s important to understand how the transform works and how to reverse it.

Dropping Columns and Rows in Pandas


There are a few ways to drop columns and rows in Pandas. This post describes the easiest way to do it and provides a few alternatives that can sometimes be useful.