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        <title>Collaborative-recommendation Tag - Viblo</title>
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            <title><![CDATA[SVD cho hệ thống Recomendation System]]></title>
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            <description><![CDATA[1. Khái niệm

SVD (Singular Value Decomposition) là kỹ thuật phân tách một ma trận thành tích của các ma trận nhỏ hơn.

1.1 Full SVD

Giả sử ta có ma ...]]></description>
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