Last Updated：2025/11/29
Sentence
最小二乗問題を効率的に解くために、設計行列をユニタリ（直交）行列と上三角行列の積に分解して後退代入を用います。
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To solve the least-squares problem efficiently, we compute the QR decomposition of the design matrix and use back substitution.
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To solve the least-squares problem efficiently, we compute the QR decomposition of the design matrix and use back substitution.
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QR decomposition
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