Tagged Questions
2
votes
2answers
157 views
how to avoid 0 determinant when sample covariance matrix has very small values
I have $n$, $p$-dimensional vectors and I am construction the $p$x$p$ covariance matrix using the following formula:
$Cov(j,k) = {1/(n-1)} {{\sum^n_{i=1}} (x_i(j) - {\mu}(j)) * (x_i(k) - {\mu(k)}) ...
5
votes
1answer
180 views
When doing quadrat counting, how do you construct the quadrats?
I want to perform quadrat count analysis on several point processes (or one marked point process), to then apply some dimensionality reduction techniques.
The marks are not identically distributed, ...
3
votes
0answers
81 views
How can I rediscretize my data?
Related to my previous question, I have a dataset of 2D points with an associated label (this label can take 6 different values). As suggested in the answers to my other question, this can be modeled ...
