Backpropagation — The algorithm that makes neural networks learn. After a prediction, backprop calculates how much each weight contributed to the error, then adjusts them to reduce the error next time. Runs backward through the network — hence ‘back’ propagation. The foundation of all deep learning.
Why It Matters
Understanding Backpropagation is essential for anyone working with AI systems. As the technology evolves, these fundamentals separate informed decisions from costly mistakes.
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