Draw a digit
This is a:
Instructions
Draw a digit on the black square with your mouse to make the AI guess which digit you drew. It will probably guess the wrong digit, but you can do something about that! By clicking the digit below that corresponds to the digit you drew, the AI will learn what that digit looks like and take a better attempt at guessing the number next time. After 100-200 attempts, the AI will likely be trained well enough to guess the majority of digits correctly.
How it works
The AI uses a neural network. This is a network that consists of digital neurons that are connected to each other. The first step when you draw a digit is reducing the quality of the digit to 28x28. For each pixel, the brightness of the pixel corresponds to a number between 0 and 1, which will be the value for our first neurons. Depending on how strong the connections to other neurons are, these neurons will send their value to other neurons. Finally, the last 10 neurons correspond to digits from 0 to 9, and the neuron with the highest value will be the guessed digit. But what happens if this guess is incorrect? In that case, the connections between neurons are modified in such a way that if the same image of a digit were to be shown to the network again, it will be better at recognising the digit and take a more accurate guess. By repeating this process many times, this network will eventually be trained to recognise handwritten digits.