The neural network is a model expressed by a mathematical formula devised based on the signal transmission mechanism of neuron synapse which is a human brain cell. Neural network theory was invented in 1943 by American neurophysiologists and mathematicians, Warren McCulloch and Walter Pitz, and was called a formal neuron.
A neural network takes a form in which a simple function that receives and outputs a plurality of input data is complicatedly connected. Since the human brain is also performing advanced recognition and thinking by a combination of simple neurons, it is expected at that time that neural networks can acquire advanced recognition and thinking abilities as human brains It was.
But for the neural network this was the beginning of a long winter era.