Covariance - dot product. Variance - squared norm. Correlation - cosinus of the ... | Hacker News

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krcz on March 4, 2015 | parent | context | favorite | on: Understanding Variance, Co-Variance, and Correlati...

Covariance - dot product. Variance - squared norm. Correlation - cosinus of the angle between vectors.

sukilot on March 4, 2015 [–]

This is why I love math. Rigorous definitions and pattern reuse, distilling concepts to their essential features.

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