
Type: Bug

Status: Resolved

Priority: Minor

Resolution: Fixed

Affects Version/s: None

Fix Version/s: None

Component/s: Graph

Labels:None
Hi folk, I'm doing a tests case for the class BaseMutableGraph, in order to upgrade our testcase suite. I think that our implementation of vertex degree is wrong.
according with http://en.wikipedia.org/wiki/Glossary_of_graph_theory#Adjacency_and_degree
"The degree, or valency, dG(v) of a vertex v in a graph G is the number of edges incident to v, with loops being counted twice. A vertex of degree 0 is an isolated vertex. A vertex of degree 1 is a leaf. In the labelled simple graph example, vertices 1 and 3 have a degree of 2, vertices 2, 4 and 5 have a degree of 3, and vertex 6 has a degree of 1. If E is finite, then the total sum of vertex degrees is equal to twice the number of edges."
so for a complete graph with 5 nodes, each vertex has a degree of 4. Instead our implementation returns 8.
IMHO this is wrong. WDYT?
Have a nice week end