How Biology Became the Foundation of Artificial Intelligence 🧠
At the core of neural networks is a simple idea inspired by the human brain.
A biological neuron receives signals through dendrites, integrates them in the cell body, and sends an impulse forward if the signal is strong enough.
An artificial neuron follows a similar logic, but mathematically.
Inputs are multiplied by weights, summed together, adjusted by a bias, and then passed through an activation function.
With a sigmoid activation function, the output is always between 0 and 1.
This means the neuron does not simply answer "yes" or "no".
It produces a smooth value that can be interpreted as confidence or probability. 📊
Before transformers, attention mechanisms, and large language models, this was the foundation: the perceptron and the activation function.
Modern AI begins at the smallest level, with one artificial neuron. ✨