On 18 January 2014 20:51, Kevin K wrote:
> I have some code that I need help vectorizing.
> I want to convert the following to vector form, how can I? I want to get rid
> of the inner loop - apparently, it's possible to do so.
> X is an NxD matrix. y is a 1xD vector.
>
> def foo(X, y, mylambda, N
Kevin K wrote:
> I have some code that I need help vectorizing.
> I want to convert the following to vector form, how can I? I want to get
> rid of the inner loop - apparently, it's possible to do so. X is an NxD
> matrix. y is a 1xD vector.
>
> def foo(X, y, mylambda, N, D, epsilon):
> ...
>
I didn't paste the whole function, note the ... before and after. I do use the
values.
I want to get rid of one of the loops so that the computation becomes O(D).
Assume vectors a and c should get populated during the compute, each being 1xD.
Thanks
On Saturday, January 18, 2014 12:51:25 PM U
On 18 January 2014 20:51, Kevin K 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 have some code that I need help vectorizing.
I want to convert the following to vector form, how can I? I want to get rid of
the inner loop - apparently, it's possible to do so.
X is an NxD matrix. y is a 1xD vector.
def foo(X, y, mylambda, N, D, epsilon):
...
for j in xrange(D):
