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Ingy döt Net 2013-04-10 23:57:08 -07:00
parent 47bf37c096
commit b83f433714
12433 changed files with 156208 additions and 123 deletions
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5
Task/Polynomial-regression/Python/polynomial-regression-1.py Normal file
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>>> x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> y = [1, 6, 17, 34, 57, 86, 121, 162, 209, 262, 321]
>>> coeffs = numpy.polyfit(x,y,deg=2)
>>> coeffs
array([ 3., 2., 1.])

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Task/Polynomial-regression/Python/polynomial-regression-2.py Normal file
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>>> yf = numpy.polyval(numpy.poly1d(coeffs), x)
>>> yf
array([ 1., 6., 17., 34., 57., 86., 121., 162., 209., 262., 321.])

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Task/Polynomial-regression/Python/polynomial-regression-3.py Normal file
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>>> '%.1g' % max(y-yf)
'1e-013'

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Task/Polynomial-regression/Python/polynomial-regression-4.py Normal file
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>>> x = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> y = [2.7, 2.8, 31.4, 38.1, 58.0, 76.2, 100.5, 130.0, 149.3, 180.0]

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Task/Polynomial-regression/Python/polynomial-regression-5.py Normal file
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>>> p = numpy.poly1d(numpy.polyfit(x, y, deg=2), variable='N')
>>> print p
2
1.085 N + 10.36 N - 0.6164