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Question
How can you delete a random fraction of entries from a sparse matrix?
a - sparse matrix f - fraction which should be removed I tried: nonZeros = nnz(A); [i,j,s] = find(A); s = RandStr...
12 years ago | 1 answer | 0
1
answerQuestion
How can I calculate the frobenius norm piecewise on matrix product?
I want to calculate norm(A*B - C*C,'fro') A and B are huge but thin factor matrices (1000000 x 20 and 20 * 1000000). C (10000...
12 years ago | 1 answer | 0
1
answerQuestion
How can I do a memory efficient sparse matrix multiplication?
I have a sparse matrix A (dimension 4000000 x 1000000) and I want to calculate the matrix product: B = A * A' This results...
12 years ago | 1 answer | 2
1
answerQuestion
How can I get good matrix approximations using a sparse matrix?
I have a matrix A (dimension 4000000 x 5) and a sparse matrix B (dimension 4000000 x 2000000). Now I am searching for an approxi...
12 years ago | 1 answer | 0
