Deep Learning
A machine learning technique using artificial neural networks with multiple layers to process complex data, mimicking how the human brain processes information through interconnected neurons. The 'deep' refers to having many layers (sometimes hundreds) that each learn different aspects of the data, from simple patterns in early layers to complex concepts in later ones. Think of it like learning to recognize a face - the first layers might detect edges and shapes, middle layers identify features like eyes and noses, and final layers recognize the complete face. This approach has revolutionized AI capabilities, enabling breakthroughs in image recognition, natural language processing, and game-playing that seemed impossible just decades ago.