『機械学習のエッセンス』を読んでるが、線形代数がムズすぎる。変換、ランク、逆行列とかマジで意味わからん

www.latimes.com 人種に関する有効性の説明 Did the vaccines help people of color? All five of the people in the Moderna trial who developed COVID-19 after receiving the vaccine were white. As a result, the Moderna vaccine was 100% effective …