Games & Quizzes
Don't forget to Sign In to save your points
This is a modal window.
PERFECT HITS | +NaN | |
HITS | +NaN | |
LONGEST STREAK | +NaN | |
TOTAL | + |
This is a three. It's sloppily written and rendered at an extremely low resolution of 28 by 28 pixels.
But your brain has no trouble recognizing it as a three and I want you to take a moment to appreciate
How crazy it is that brains can do this so effortlessly?
I mean this this and this are also recognizable as threes,
even though the specific values of each pixel is very different from one image to the next.
The particular light-sensitive cells in your eye that are firing when you see this three
are very different from the ones firing when you see this three.
But something in that crazy smart visual cortex of yours
resolves these as representing the same idea while at the same time recognizing other images as their own distinct ideas
But if I told you hey sit down and write for me a program that takes in a grid of 28 by 28
pixels like this and outputs a single number between 0 and 10 telling you what it thinks the digit is
Well the task goes from comically trivial to dauntingly difficult
Unless you've been living under a rock. I think I hardly need to motivate the relevance and importance of machine learning and neural networks to the present into the future
But what I want to do here is show you what a neural network actually is
Assuming no background and to help visualize what it's doing not as a buzzword but as a piece of math
My hope is just that you come away feeling like this structure itself is
Motivated and to feel like you know what it means when you read or you hear about a neural network quote-unquote learning
This video is just going to be devoted to the structure component of that and the following one is going to tackle learning
What we're going to do is put together a neural network that can learn to recognize handwritten digits
/təˈɡeT͟Hər/
self-confident, level-headed, or well organized. In a supportive and united manner.
/ˈfälōiNG/
next in time. body of supporters or admirers. Next; the one after this. To come after someone; be guided by someone.
/ˈsəmˌTHiNG/
used for emphasis with following adjective functioning as adverb. Thing that is not yet known or named.
/ˈklasik/
Having the standard or typical qualities. Something popular or famous for a long time.
/rīt/
Expressed using writing. To invent or create a computer program. To invent or create a computer program.
/ˈlərniNG/
acquisition of knowledge or skills through study. To get knowledge or skills by study or experience.
/ˈprōˌɡram/
Series of classes at a college or university. provide machine with program.
/ˈfēliNG/
showing emotion or sensitivity. emotional state or reaction. To be aware of or experience an emotion, sensation.
/ˈoutˌpo͝ot/
amount produced by person, machine, etc.. Amount of some things that are produced. (of computer) produce data.