+1 for including this function... I had made the same one, but mine is
actually 5 times slower than the one proposed in trac 6245 :P
Is it possible to not name it "hadamard_product"? Coming from MatLab,
I've used it hundreds of time, but I would have never recognized that
"hadamard_product" could
On Mon, Jun 15, 2009 at 8:39 PM, Jason Grout wrote:
>
> William Stein wrote:
>> On Mon, Jun 15, 2009 at 7:34 PM, Jason Grout
>> wrote:
>>> Bill Hart wrote:
Can I ask what applications this "Hadamard product" has?
>>
>> I've never used it, but I guess it must be really really important in
>>
On Jun 15, 10:34 am, Jason Grout wrote:
> Also, a google search for hadamard product applications turns up
> http://buzzard.ups.edu/courses/2007spring/projects/million-paper.pdf
> (maybe Rob Beezer knows this person?)
Elizabeth Million was a student in a course of mine a few years ago
and this w
Jason Grout wrote:
> William Stein wrote:
>> On Mon, Jun 15, 2009 at 7:34 PM, Jason Grout
>> wrote:
>>> Bill Hart wrote:
Can I ask what applications this "Hadamard product" has?
>> I've never used it, but I guess it must be really really important in
>> numerical computation, since most shoc
William Stein wrote:
> On Mon, Jun 15, 2009 at 7:34 PM, Jason Grout
> wrote:
>> Bill Hart wrote:
>>> Can I ask what applications this "Hadamard product" has?
>
> I've never used it, but I guess it must be really really important in
> numerical computation, since most shockingly it is the *defaul
William Stein wrote:
> On Mon, Jun 15, 2009 at 7:34 PM, Jason Grout
> wrote:
>> Bill Hart wrote:
>>> Can I ask what applications this "Hadamard product" has?
>
> I've never used it, but I guess it must be really really important in
> numerical computation, since most shockingly it is the *defaul
On Mon, Jun 15, 2009 at 7:34 PM, Jason Grout wrote:
>
> Bill Hart wrote:
>> Can I ask what applications this "Hadamard product" has?
I've never used it, but I guess it must be really really important in
numerical computation, since most shockingly it is the *default* for
A*B in numpy!!
sage: imp
Bill Hart wrote:
> Can I ask what applications this "Hadamard product" has?
(Tim: The term is from linear algebra)
http://en.wikipedia.org/wiki/Matrix_multiplication#Hadamard_product says
it is used in JPG compression, for example.
http://planetmath.org/encyclopedia/HadamardProduct.html
Also,
On Jun 15, 2009, at 1:14 PM, Bill Hart wrote:
>
> Can I ask what applications this "Hadamard product" has?
>
> Bill.
I've never heard it called that, but element-wise multiplication
is useful for tensors.
Cheers,
Tim.
---
Tim Lahey
PhD Candidate, Systems Design Engineering
University of Wate
Can I ask what applications this "Hadamard product" has?
Bill.
On 15 June, 17:32, William Stein wrote:
> On Mon, Jun 15, 2009 at 6:17 PM, John Cremona wrote:
>
> > 2009/6/15 Jason Grout :
>
> >> William Stein wrote:
> >>> On Mon, Jun 15, 2009 at 5:26 PM, paramaniac
> >>> wrote:
> > Sorry,
On Mon, Jun 15, 2009 at 6:17 PM, John Cremona wrote:
>
> 2009/6/15 Jason Grout :
>>
>> William Stein wrote:
>>> On Mon, Jun 15, 2009 at 5:26 PM, paramaniac wrote:
> Sorry, I don't understand your example.
> If
> A1 = matrix([[a1,b1],[c1,d1]])
> A2 = matrix([[a2,b2],[c2,d2]])
>
2009/6/15 Jason Grout :
>
> William Stein wrote:
>> On Mon, Jun 15, 2009 at 5:26 PM, paramaniac wrote:
Sorry, I don't understand your example.
If
A1 = matrix([[a1,b1],[c1,d1]])
A2 = matrix([[a2,b2],[c2,d2]])
then
>>> A1.*A2 = matrix([[a1*a2, b1*b2],[c1*c2, d1*d2]])
>>>
>>
William Stein wrote:
> On Mon, Jun 15, 2009 at 5:26 PM, paramaniac wrote:
>>> Sorry, I don't understand your example.
>>> If
>>> A1 = matrix([[a1,b1],[c1,d1]])
>>> A2 = matrix([[a2,b2],[c2,d2]])
>>> then
>> A1.*A2 = matrix([[a1*a2, b1*b2],[c1*c2, d1*d2]])
>>
>
> (1) we aren't going to add the .*
On Mon, Jun 15, 2009 at 5:26 PM, paramaniac wrote:
>
>> Sorry, I don't understand your example.
>> If
>> A1 = matrix([[a1,b1],[c1,d1]])
>> A2 = matrix([[a2,b2],[c2,d2]])
>> then
>
> A1.*A2 = matrix([[a1*a2, b1*b2],[c1*c2, d1*d2]])
>
(1) we aren't going to add the .* notation A1 .* A2 to sage, sin
> Sorry, I don't understand your example.
> If
> A1 = matrix([[a1,b1],[c1,d1]])
> A2 = matrix([[a2,b2],[c2,d2]])
> then
A1.*A2 = matrix([[a1*a2, b1*b2],[c1*c2, d1*d2]])
Regards,
Lukas
--~--~-~--~~~---~--~~
To post to this group, send email to sage-devel@googlegr
paramaniac wrote:
> Dear Sage Developers,
>
> It would be very nice if Sage supported the element-wise
> multiplication of matrices like the .* operator in Octave/Matlab.
>
I was about to point out the recent thread about this, but then realized
it was you that started that thread and acknowl
Sorry, I don't understand your example.
If
A1 = matrix([[a1,b1],[c1,d1]])
A2 = matrix([[a2,b2],[c2,d2]])
then
A1.*A2 =
On Mon, Jun 15, 2009 at 10:52 AM, paramaniac wrote:
>
> Dear Sage Developers,
>
> It would be very nice if Sage supported the element-wise
> multiplication of matrices lik
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