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| data_mining:pca [2014/08/24 02:06] – [Parameterwahl (k)] phreazer | data_mining:pca [2014/08/24 02:10] – [Parameterwahl (k)] phreazer | ||
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| Für ein k, kann $1-\frac{\sum_{i=1}^k S_{ii}}{\sum_{i=1}^n S_{ii}} \leq 0.01$. | Für ein k, kann $1-\frac{\sum_{i=1}^k S_{ii}}{\sum_{i=1}^n S_{ii}} \leq 0.01$. | ||
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| + | ===== Decompression ===== | ||
| + | $x_\text{approx} = U_\text{reduce} z$ | ||