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Re: Need help vectorizing code

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From Joshua Landau <joshua@landau.ws>
Date Sat, 18 Jan 2014 21:04:32 +0000
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Subject Re: Need help vectorizing code
To Kevin K <richyokevin@gmail.com>
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On 18 January 2014 20:51, Kevin K <richyokevin@gmail.com> wrote:
> def foo(X, y, mylambda, N, D, epsilon):
> ...
>         for j in xrange(D):
>             aj = 0
>             cj = 0
>             for i in xrange(N):
>                 aj += 2 * (X[i,j] ** 2)
>                 cj += 2 * (X[i,j] * (y[i] - w.transpose()*X[i].transpose() + w[j]*X[i,j]))

Currently this just computes and throws away values...

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Thread

Need help vectorizing code Kevin K <richyokevin@gmail.com> - 2014-01-18 12:51 -0800
  Re: Need help vectorizing code Joshua Landau <joshua@landau.ws> - 2014-01-18 21:04 +0000
  Re: Need help vectorizing code Kevin K <richyokevin@gmail.com> - 2014-01-18 13:18 -0800
  Re: Need help vectorizing code Peter Otten <__peter__@web.de> - 2014-01-18 22:50 +0100
  Re: Need help vectorizing code Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2014-01-19 15:46 +0000

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