neural networks

redpill me on neural networks

what is a neural network? how do I make one? why would I want one? what can you use them for?

Basically, neural network is a composition of addition and multiplication operation, plus a special algorithm that finds proper multipliers, so that the composition begins to approximate some specific function. For example, you can train neural network to approximate sin or log functions.

"a*w1 + b*w2 + c*w3" is a neural network. The complexity arises when a, b and c are neural networks too. And you have to include several layers, because single layer can't approximate non-liner functions.