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@jemoka / Jemoka Knowledge Base / raw/course/cs205l/kbhsu_cs205l_jan092025.md
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--- title: "SU-CS205L JAN092025" source: https://www.jemoka.com/posts/kbhsu_cs205l_jan092025/ date: 2025-01-09 --- Key Sequence Review data interpolation regularization Notation New Concepts Train-Test Split Robustness well-posedness Numerical Stability numerically stable vector norms numerically stable quadratic formula polynomial interpolation Vandermonde matrix + monomial basis Lagrange Basis Newton Basis Important Results / Claims near-singular matrix problem Questions Interesting Factoids “optimization is a wrong way to train a neural network” (because you can’t hope to sample a trajectory in \(\mathbb{R}^{n}\) at large \(n\))