以立方体为例,有8个节点和12个边,每个节点与3个节点相连
使用networkx,我必须手动输入所有边。例如,下面的代码将构造一个包含二十面体所有边的图(12个节点,30条边,每个节点5个相邻节点)
import networkx as nx
G = nx.Graph()
nodes = list(range(12))
edges = [
[0, 1], [0, 2], [0, 3], [0, 4], [0, 5],
[1, 2], [1, 6], [1, 10], [1, 5],
[2, 3], [2, 6], [2, 7],
[3, 4], [3, 7], [3, 8],
[4, 5], [4, 8], [4, 11],
[5, 11], [5, 10],
[6, 7], [6, 9], [6, 10],
[7, 8], [7, 9],
[8, 9], [8, 11],
[9, 10], [9, 11],
[10, 11],
]
G.add_nodes_from(nodes)
G.add_edges_from(edges)
我的问题是如何在不手动写入的情况下获取所有可能的边。每个节点的名称都可以随机初始化
据我所知igraph中的Erdős–Rényi模型无法约束相邻节点
from igraph import *
g = Graph.Erdos_Renyi(12, m=30, directed=False)
g.get_edgelist()
"""
[(0, 1),
(0, 2),
(1, 3),
(2, 3),
(0, 4),
(1, 4),
(3, 5),
(4, 6),
(5, 6),
(0, 7),
(2, 7),
(3, 7),
(6, 7),
(0, 8),
(1, 8),
(3, 8),
(0, 9),
(3, 9),
(4, 9),
(6, 9),
(0, 10), node10 has more than 5 edges.
(2, 10),
(3, 10),
(5, 10),
(7, 10),
(8, 10),
(1, 11),
(2, 11),
(4, 11),
(9, 11)]
"""
目前没有回答
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