Community Profile

### United Nations University

6 total contributions since 2011

Professional Interests: technology management

View details...

Contributions in
View by

Question

How to create a symmetric random matrix?
Hello, I need to create a random matrix meeting the following conditions: - The values on the main diagonal are between a ...

7 years ago | 5 answers | 0

### 5

Question

Matrix of ratios w.r.t. row or colum header
I have very large symmetric matrices in which first row and column are headers that represent the size of different groups and t...

8 years ago | 1 answer | 0

### 1

Question

How to turn certain parts/blocks of a large matrix to zero while keeping the rest of the original matrix intact?
Hi. I have a large weighted matrix, about 1000*7000 order. I need to turn certain blocks of this matrix (with known range of row...

9 years ago | 1 answer | 0

### 1

Question

How to convert row and column vectors of a symmetric matrix to zero if diagonal value is zero?
I have symmetric matrices of large size. I need to ensure that if there are any zeros on the main diagonal, then their correspon...

10 years ago | 2 answers | 0

### 2

Question

How to extract a matrix from correlation matrix where r is positive and p-value significant
Hello, From a certain correlation matrix accompanied by p-values [r, p], I need to extract a new matrix where all those correlat...

10 years ago | 1 answer | 0