MNIST Data File
Explore the structure of MNIST data files used for testing neural networks. Understand how labels and pixel values represent handwritten digits to improve your model's evaluation. Learn to work with subsets of MNIST data for efficient algorithm development.
We'll cover the following...
Sample of MNIST test data
Let’s take a peek at these files. The following image shows a section of the MNIST test set loaded into a text editor.
Format of data file
The text editor is showing long lines of text, consisting of comma-separated numbers. The lines are quite long, so they wrap around a few times. This text editor helpfully shows the real line numbers in the margin, so we can see four whole lines of data and part of the fifth one.
The content of these records or lines of text are easy to understand:
-
The first value is the label, that is, the actual digit that the handwriting is supposed to represent, such as a or a ...