this post was submitted on 22 Sep 2025
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The simplest neural network (simplified). You input a set of properties(first column). Then you weightedly add all of them a number of times(with DIFFERENT weights)(first set of lines). Then you apply a non-linearity to it, e.g. 0 if negative, keep the same otherwise(not shown).
You repeat this with potentially different numbers of outputs any number of times.
Then do this again, but so that your number of outputs is the dimension of your desired output. E.g. 2 if you want the sum of the inputs and their product computed(which is a fun exercise!). You may want to skip the non-linearity here or do something special™
Simplest multilayer perceptron*.
A neural network can be made with only one hidden layer (and still, mathematically proven, be able to output any possible function result, just not as easily trained, and with a much higher number of neurons).
The one shown is actually single layer. Input, FC hidden layer, output. Edit: can't count to fucking two, can I now. You are right.
It's good. Thanks for correcting yourself. :3
The graphs struck me as weird when learning as I expected the input and output nodes to be neuron layers as well... Which they are, but not in the same way. So I frequently miscounted myself while learning, sleep deprived in the back of the classroom. ^^;;