The Hadamard product is just * , for example, ( A=. i.2 3 ) 0 1 2 3 4 5 ( B=. >:*: A ) 1 2 5 10 17 26
A;B ┌─────┬────────┐ │0 1 2│ 1 2 5│ │3 4 5│10 17 26│ └─────┴────────┘ A * B 0 2 10 30 68 130 On Tue, Apr 29, 2014 at 3:17 PM, mikel paternain <[email protected]>wrote: > In a excellet review paper (see below [1]) Shuangzhe Liu & Götz Trenkler > show some results on matrix products: > > - Hadamard product > - Kroneker product > - Khatri-Rao product > - Tracy-Sigh product > - Khatri-Rao sum > - Tracy-Sigh sum > - Vector cross productSchur complement, etc. > > With this thread, we intend to create a collaborative work to find the > J-expressions that meet these products and sums. > If you want to collaborate, these will be published in next issue of > Journal of J (deadline May-31) > Thanks in advance, > Mikel > JoJ > > ----------------------------------------------------------------------------------------------------------------- > [1] There is a free version on the webif you can not find it, we can send > you a copy > > HADAMARD, KHATRI-RAO, KRONECKER AND OTHER MATRIX PRODUCTS > Shuangzhe Liu & Götz Trenkler > International Journal of Infornation ans Systems Sciences > Vol. 4, N. 1, 160-177 > > > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
