Landmark 4 stops to get here · leads to 5

Learning Rate

A hyperparameter controlling the step size in gradient descent - too high causes instability, too low slows convergence.

Your route here

4 stops · basics first
  1. Dataset ✓ understood

    A collection of data examples used for training, validating, or testing machine learning models.

  2. Training ✓ understood

    The process of fitting a model to data by repeatedly measuring how wrong its outputs are and adjusting its parameters to reduce that error.

  3. Loss Function ✓ understood

    A function that scores how wrong a model's prediction is as a single number, which training then works to make as small as possible.

  4. Gradient Descent ✓ understood

    An optimization method that repeatedly moves a model's parameters a small step in the direction that most reduces the loss.

  5. Learning Rate · you are here ✓ understood

Picture it

stepslossdiverges ↑too small (η = 0.02)good (η = 0.3)too large (η = 1.05)
Notice the same problem three ways: too small a rate crawls, a good rate drops fast, and too large a rate makes loss blow up.

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In the research

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A paper that builds on Learning Rate .