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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Singular-value-decomposition/J/singular-value-decomposition-1.j Normal file
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install'all'

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Task/Singular-value-decomposition/J/singular-value-decomposition-2.j Normal file
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require'math/misc/svd'
svd 3 0,:4 5
┌──────────────────┬──────────────┬──────────────────┐
│0.316228 _0.948683│6.7082 2.23607│0.707107 _0.707107│
│0.948683 0.316228│ │0.707107 0.707107│
└──────────────────┴──────────────┴──────────────────┘

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Task/Singular-value-decomposition/J/singular-value-decomposition-3.j Normal file
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svd 2 3 5,7 11 13,17 19 23,:29 31 37
┌──────────────────────────────┬────────────────────────┬─────────────────────────────┐
│0.0872159 _0.426839 _0.875752│68.6864 2.90306 0.868048│0.499426 0.860756 _0.0983486│
│ 0.265687 _0.830077 0.466712│ │0.554592 _0.230425 0.799582│
│ 0.499894 _0.0635067 _0.12233│ │0.665583 _0.453876 _0.592449│
│ 0.819701 0.353195 0.0165088│ │ │
└──────────────────────────────┴────────────────────────┴─────────────────────────────┘

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Task/Singular-value-decomposition/J/singular-value-decomposition-4.j Normal file
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({.,(* =@i.@#)&.>@(1&{),{:) svd 2 3 5,7 11 13,17 19 23,:29 31 37
┌──────────────────────────────┬────────────────────────┬─────────────────────────────┐
│0.0872159 _0.426839 _0.875752│68.6864 0 0│0.499426 0.860756 _0.0983486│
│ 0.265687 _0.830077 0.466712│ 0 2.90306 0│0.554592 _0.230425 0.799582│
│ 0.499894 _0.0635067 _0.12233│ 0 0 0.868048│0.665583 _0.453876 _0.592449│
│ 0.819701 0.353195 0.0165088│ │ │
└──────────────────────────────┴────────────────────────┴─────────────────────────────┘