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TECH TIP: Principal Component Analysis

A very important technique in unsupervised machine learning as well as dimensionality reduction is Principal Component Analysis (PCA). But PCA is difficult to understand without the fundamental mathematical underpinnings. The two instructional videos below (Part 1 and 2) demonstrate PCA at an introductory level to provide an appreciation for this powerful tool used in big data applications.

PART 1:

PART 2:

 

 

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