PU SPI/MAE 353 Neural Network Worksheet (2025)
UHH CSD-2025 Neural Network Playground

Full reset

Epoch

Data

Which dataset do you want to use?

Features

Which properties do you want to feed in?

Click anywhere to edit.
Weight/Bias is 0.2.
This is the output from one neuron. Hover to see it larger.
The outputs are mixed with varying weights, shown by the thickness of the lines.

Output

Test loss
Training loss
Colors shows data, neuron and weight values.

Additional internal Settings

Compared to the original playground, several UI elements have been hidden for simplicity. The following settings are used internally:

Credits

Repurposed for university teaching at Princeton University (SPI-353) and University of Hamburg (66-656 / CSD) with cosmetic modifications. Taken from https://github.com/tensorflow/playground. Credit for everything but errors goes to Daniel Smilkov and Shan Carter!

This is a continuation of many people’s previous work — most notably Andrej Karpathy’s convnet.js demo and Chris Olah’s articles about neural networks. Many thanks also to D. Sculley for help with the original idea and to Fernanda Viégas and Martin Wattenberg and the rest of the Big Picture and Google Brain teams for feedback and guidance.