什么是知识图谱？

1import networkx as nx
2import numpy as np
3import matplotlib.pyplot as plt
4
5# create a knowledge graph
6knowledge_graph = nx.DiGraph()
7
8# add triples
9knowledge_graph.add_edge('Adam', 'Book', relation='reads')
10knowledge_graph.add_edge('Kate', 'Book', relation='writes')
11knowledge_graph.add_edge('Book', 'Library', relation='stored')
12
13# graph layout
14pos = nx.spring_layout(knowledge_graph)
15
16# plot graph
17nx.draw(knowledge_graph, pos, edge_color='black', 
18        width=1, linewidths=1, node_size=2000, 
19        labels={node: node for node in knowledge_graph.nodes()})
20# plot edge labels
21nx.draw_networkx_edge_labels(knowledge_graph, pos,
22    edge_labels=nx.get_edge_attributes(knowledge_graph, 'relation'),
23    font_color='red')