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book
数据分析之图算法: 基于Spark和Neo4j
by
Mark Needham
,
Amy E. Hodler
September 2020
Intermediate to advanced
213 pages
5h 25m
Chinese
Posts & Telecom Press
Content preview from
数据分析之图算法: 基于Spark和Neo4j
100
|
第
6
章
运行这段程序,结果如下所示:
nodeA
nodeB
nodeC
matplotlib
six
python-dateutil
jupyter
jpy-console
ipykernel
可以看到和之前一样的
6
个库,但现在知道它们是如何连接的了。
matplotlib
、
six
和
python-
dateutil
构成一个三角形,
jupyter
、
jpy-console
和
ipykernel
构成了另一个三角形。图
6-4
展
示了这些三角形。
图
6-4
:软件依赖图中的三角形
6.2.6
使用
Neo4j
计算局部聚类系数
还可以计算局部聚类系数。以下查询将针对每个节点计算局部聚类系数:
CALL algo.triangleCount.stream('Library', 'DEPENDS_ON')
YIELD nodeId, triangles, coefficient
WHERE
coefficient > 0
RETURN
algo.getNodeById(nodeId).id
AS
library, coefficient
ORDER BY
coefficient
DESC
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ISBN: 9787115546678