3. Summary: Essence and Effects of PCA This time, we implemented PCA from scratch using eigenvalue decomposition of the covariance matrix without using the scikit-learn PCA class. Through this series ...

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The job of the Spring IoC container is to keep your business logic clean by managing the lifecycle and configuration of objects that would otherwise make things messy. But the Spring container doesn't ...

An Oklahoma high school principal was crowned prom king just weeks after he was shot and wounded while stopping a gunman in the lobby of the campus. According to NBC affiliate KTEN in Oklahoma, ...

An Oklahoma principal is being hailed as a hero after tackling a gunman inside a high school earlier this month – a heart-stopping moment that was captured on video. Authorities said 20-year-old ...

Newly released video shows the moment an Oklahoma high school principal confronted and tackled a gunman after he opened fire inside the school. The footage shows Pauls Valley High School Principal ...

An Oklahoma high school principal "saved kids' lives" last week when he tackled a gunman and was shot in the leg in the process, the local police chief said. Limited time: Save 25% on NBC News ...

PAULS VALLEY, Okla. (KFOR)—New video shows the moment an armed former student walked into Pauls Valley school on April 7. Watch the new video above. The video shows the moment the armed suspect walks ...

An Oklahoma principal who was shot in the leg while tackling a school shooter on Tuesday was hailed a hero for stopping the gunman and preventing a worse tragedy, officials said. Pauls Valley High ...

A former high school principal in Columbia County was sentenced to just over five years in prison last month for possessing and sharing images of child sex abuse. Jeremy P. Williams, a 50-year-old ...