---
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 &ldquo;optimization is a wrong way to train a neural network&rdquo; (because you can&rsquo;t hope to sample a trajectory in \(\mathbb{R}^{n}\) at large \(n\))
