Human Tech Tree
Researched1847 · Industrial Age (1700 – 1900)

Formal Sciences & Matter / Mathematics

Gradient Descent

Cauchy's method of steepest descent (1847) finds a minimum by repeatedly stepping downhill.

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Cauchy proposed it for solving systems of equations in astronomy, and it became the workhorse of numerical optimisation. Combined with backpropagation, it trains almost all neural networks today.

Prerequisites

Unlocks

  • Backpropagation1986Backpropagation computes the gradient that gradient descent follows

Sources

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