Dimensionality Reduction with Principal Component Analysis

The Mallet Example

When I was in undergrad, I was speaking with a professor I was collaborating with on research and began asking about principal component analysis. I’ve never seen a more concise or clear explanation of PCA than what Dr. Kristin Bennett at Rensselaer Polytechnic Institute showed me as a junior in college, so all due credit to her for this.

The Mathier Part

But you can’t physically pick up your data and spin it around. Even if you could, how are you supposed to do that in 100 dimensions?

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