For questions about the functionality related to permutations in Mathematica.

learn more… | top users | synonyms

7
votes
0answers
238 views

Using Compile to speed up Function with PermutationProduct

I have the following fairly simple routine dot involving PermutationProduct that I wish to speed up using ...
1
vote
0answers
78 views

How to sequentially select, from a large set of tuples (of matrices), those with a certain property

I'm interested in finding a computationally efficient way for selecting all tuples of matrices which have a certain property. The property I'm interested in is that I want the column sum, of f[the ...
1
vote
0answers
54 views

Challenge: Creating Compilable Permutations Function

As Mathematica's implemented Permuations function is not compilable I tried to write my very own Permutations implementation, called ...
1
vote
0answers
145 views

Efficient submatrix swaps for large sparse matrix

I am implementing the 'swap' algorithm for a binary matrix to generate matrix permutations that maintain row and column totals. My problem is that my matrices are large and sparse (e.g., 19774 x 942, ...