Sigmoid
Domain: AI Fundamentals
🎯 Motivation
Squashes any number into the range 0 to 1, useful for probabilities and binary outputs.
📋 Concrete Example
Sigmoid(0) = 0.5, Sigmoid(10) is about 0.99995, Sigmoid(-10) is about 0.00005.
🔗 Analogy
Like a dimmer switch that can only go from off (0) to fully on (1), no matter how hard you twist.