https://reluchat.yunusemrevurgun.com/blog/ Technical articles about on-device AI, browser-based chatbots, NLP, and privacy-first machine learning. en Sun, 18 Oct 2026 10:00:00 GMT https://reluchat.yunusemrevurgun.com/assets/logo.png https://reluchat.yunusemrevurgun.com https://reluchat.yunusemrevurgun.com/blog/principal-component-analysis-explained/ https://reluchat.yunusemrevurgun.com/blog/principal-component-analysis-explained/ Sun, 18 Oct 2026 10:00:00 GMT PCA explained: how principal components find the directions of greatest variance, how to compute them from a covariance matrix, and when to standardize. 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