WEBVTT

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Brained to network

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You already know that the brain is made of cells, billions of them.

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Each neuron receives signals through its dendrites.

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It processes them inside its cell body and it sends a signal out through its axon.

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Input comes in, something happens inside, output goes out.

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That structure, input, process, output is the idea we borrow.

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Engineers looked at this structure and built something similar in mathematics.

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We call it an artificial neuron. It has four parts.

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First inputs, numbers flowing in, like signals arriving at the dendrites.

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Second, weights. Each input is multiplied by a weight.

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The number that decides how much that input matters.

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Third, the sum. Add them all together. Fourth, the output.

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That single number leaves and moves on.

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An artificial neuron does not fire. It does not feel.

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It does not think it multiplies numbers and adds them up.