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Projections and Least Squares

The optimization workhorse of linear algebra

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What you'll unlock:

  • 1. Projecting onto a Line
  • 2. Projecting onto a Subspace
  • 3. The Projection Matrix
  • 4. Least Squares: When Ax=b Has No Solution
  • 5. Linear Regression as Projection
  • 6. Regularization: Ridge and LASSO
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