python构建neo4j鸟类百科知识图谱的代码
时间: 2024-10-17 13:14:33 浏览: 13
在Python中,使用Neo4j作为图形数据库来构建鸟类百科知识图谱,你可以通过`neo4j-driver`库来操作。这里是一个简单的示例,展示如何连接到Neo4j数据库、创建节点(鸟类)、关联边(比如“属于”关系)以及查询数据:
```python
from neo4j import GraphDatabase
# 创建driver实例,连接到 Neo4j 服务器
uri = "bolt://localhost:7687" # 更改为你实际的地址和端口
username = "neo4j" # 数据库用户名
password = "your_password" # 数据库密码
driver = GraphDatabase.driver(uri, auth=(username, password))
def create_bird_node(bird_name):
with driver.session() as session:
session.run(
"""
CREATE (b:Bird {name: $bird_name})
RETURN b
""",
bird_name=bird_name
)
def add_belongs_to_relationship(bird1, bird2):
with driver.session() as session:
session.run(
"""
MATCH (a:Bird), (b:Bird)
WHERE a.name = $bird1 AND b.name = $bird2
CREATE (a)-[:BELONGS_TO]->(b)
""",
bird1=bird1, bird2=bird2
)
# 示例鸟名列表
birds = ["金雕", "丹顶鹤", "红腹锦鸡"]
for bird in birds:
create_bird_node(bird)
# 添加归属关系
add_belongs_to_relationship("金雕", "猛禽")
add_belongs_to_relationship("丹顶鹤", "鹳形目")
add_belongs_to_relationship("红腹锦鸡", "雉科")
# 关闭driver
driver.close()
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