# Questions tagged [distance]

Measure of distance between distributions or variables, such as Euclidean distance between points in n-space.

269 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
4k views

### How to compare two distance matrices?

Suppose that I have two distance matrices for the same set of items. By a distance matrix I mean a square matrix whose (i,j)th entry holds the distance (in terms of cosine similarity) between ith and ...
2k views

### How is pairwise PERMANOVA/adonis a valid non-parametric approach for pairwise comparisons

Assume that we have taken independent random samples of several individuals from 5 locations that represent 5 populations. The design is fairly unbalanced: the number of individuals sampled from each ...
538 views

### Expected squared distance from origin of training points vs. test points

This is from Exercise 2.4 (Page 39) of Elements of Statistical Learning: The edge effect problem discussed on page 23 is not peculiar to uniform sampling from bounded domains. Consider inputs drawn ...
395 views

### What, if any, dissimilarity is preserved in partial least squares (PLS)?

When we perform a principal components analysis (PCA) on a multivariate data set we are interested in finding orthogonal components that explain maximal variance in the data set. We can form a biplot ...
920 views

### Measure of similarity between two multivariate samples

I have two samples from a multivariate distribution. One is approximate and the other is exact. My aim is to measure the similarity between the approximate sample and the exact sample. In particular, ...
1k views

### Bhattacharyya distance for three histograms

There is a paper “Auto White Balance Based on the Similarity of Chromaticity Histograms” mention about automatic white balance. One of the key point of this algorithm is how to measure the similarity ...