Science, Toys, and the PCA @JoelRosenfeld
Science, Toys, and the PCA  @JoelRosenfeld
Uploaded January 2021 | Updated September 2026, 1 day ago
We open this lecture with a discussion of how advancements in science and technology come from a consumer demand for better toys. We also give an introduction to Principle Component Analysis (PCA). We talk about how to arrange data, shift it, and the find the principle components of our dataset. We conclude with a discussion of an example of PCA being applied in astronomy; a method called PCA Tomography for the exploration of data cubes.

PCA and Kernel PCA Derivation: youtu.be/Zd4ADCBWqFY

More on the Kernel Definition and RBF Interpolation: youtu.be/QMXwJX9ffJo

Music:
Come 2gether by Ooyy
Video Call from Los Angeles by Trevor Kolwalski
Guardians + Tek by Craig Hardgrove
Science, Toys, and the PCAA Strangely Deep Problem about Sequenceslearning math in old ageFixed Point Iteration - Loki SLAPPED 16 times for SCIENCE!The ONE integral everyone should knowDMD Explained! (Dynamic Mode Decomposition)All that work for nothing! The Polylogarithmic Hardy Spacehe wrote this in secretGetting caught with facial recognition - How SVDs are used in Facial Recognition SoftwareTomography - Hilbert Spaces and OrthogonalityNailing the Job TalkWhat if it ISN’T unique?
ThatMathThing |

Science, Toys, and the PCA

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