symmetric matrix

Terms from Artificial Intelligence: humans at the heart of algorithms

The glossary is being gradually proof checked, but currently has many typos and misspellings.

A symmetric matrix is one where the elements either side of the diagonal mirror one another. That is Mi,j = Mj,i, or, in other words, M is the matrix transpose of itself.
An example 3 x 3 symmetric matrix:
3-12
-171
21-3

Used in Chap. 7: pages 91, 101

Also known as symmetric matrices