# coding: utf-8 import csv from igraph import Graph as IGraph #1. path="net.data" edges=[]#边长集合 with open(path,"r") as file: for row in csv.reader(file.read().splitlines()): print(row)#打印数据 u,v=[i for i in row] edges.append((u,v)) print("------------------------------------------") g=IGraph.TupleList(edges, directed=False,#是否有向 vertex_name_attr="name",#点的名字 edge_attrs=None,#边长属性 weights=False)#权重-路径 for pdegree in g.vs:#统计 print(pdegree["name"],pdegree.degree())#打印节点,左边名称右边度数 print("------------------------------------------") print(str(g).splitlines())#打印信息 print("------------------------------------------") #2.紧密中心度计算 paths=g.get_all_shortest_paths("7")#找到包含7的路径 cc=0 names=g.vs["name"]#代表顶点名称 for path in paths:#筛选所有包含7的 print([names[x] for x in path]) cc+= (len(path)-1)#减一是减去自己到其他边 print( "result:",float(len(paths)-1) / cc ) #紧密中心程度=(包含该顶点的所有边数-1)/(包含该顶点的所有路径) #-1是因为减去自己
#3.封装调用 ccvs=[] #zip(g.vs,g.closeness()) 数据打包list,包含每个节点名称和紧密程度 for path in zip(g.vs,g.closeness()): ccvs.append({"name":path[0]["name"],"cc":path[1]}) for c in ccvs: print(c) v = sorted(ccvs,key= lambda x:x["cc"],reverse=True)#排序 print(v)
示例:
['7', '3', '1'] 2
['7', '3', '2'] 2
['7', '3'] 1
['7'] 0
['7', '6', '4'] 2
['7', '6', '5'] 2
['7', '6'] 1
['7', '8'] 1
['7', '8', '9'] 2
['7', '8', '9', '10'] 3
['7', '8', '9', '11'] 3
['7', '8', '12'] 2
['7', '8', '12', '13'] 3
['7', '8', '12', '14'] 3
紧密中心度=(2+2+1+0+2+2+1+1+2+3+3+2+3+3)/ (14-1)=0.48148148148148145