However, they uses containment rather than adjacency to represent the hierarchy.
From the en.wikipedia.org
Thus a graph must be sparse indeed to justify an adjacency list representation.
From the en.wikipedia.org
You just have to look at the adjacency of news and travel and natural history.
From the telegraph.co.uk
In computer science, an adjacency list is a data structure for representing graphs.
From the en.wikipedia.org
For me it is radical adjacency, a strategy that I have written about before.
From the forbes.com
But maybe all I want right now is to see the adjacency ad to the article I am reading.
From the forbes.com
Different implementation strategies exist, for example adjacency lists.
From the en.wikipedia.org
The adjacency of water gives a number of distinctive characteristics to littoral regions.
From the en.wikipedia.org
It explicitly contains both adjacency information and degree information.
From the en.wikipedia.org
More examples
The attribute of being so near as to be touching
(adjacent) nearest in space or position; immediately adjoining without intervening space; "had adjacent rooms"; "in the next room"; "the person sitting next to me"; "our rooms were side by side"
(adjacent) having a common boundary or edge; abutting; touching; "Rhode Island has two bordering states; Massachusetts and Conncecticut"; "the side of Germany conterminous with France"; "Utah and the contiguous state of Idaho"; "neighboring cities"
(adjacent) near or close to but not necessarily touching; "lands adjacent to the mountains"; "New York and adjacent cities"
Graph theory is a growing area in mathematical research, and has a large specialized vocabulary. Some authors use the same word with different meanings. Some authors use different words to mean the same thing. This page attempts to keep up with current usage.
Adjacent is an adjective meaning contiguous, adjoining or abutting.
The quality of being adjacent, or near enough so as to touch; A relationship of being adjacent to something
(adjacent) Lying next to, close, or contiguous; neighboring; bordering on; Just before, after, or facing
(Adjacencies) Time periods immediately before and after a television program, normally used as a commercial break between programs.