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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
123
第
7
章
图算法实战
随着对各种算法在特定数据集上的表现越来越熟悉,我们所采用的图分析方法也在不断深
入。本章将介绍几个示例,展示如何针对
Yelp
数据集和美国交通数据集做大规模图数据分
析。我们将在
Neo4j
平台上分析
Yelp
数据,包括概览数据,组合算法实现行程推荐,以及
挖掘用户数据和业务数据以供咨询。我们将在
Spark
中研究美国航空公司数据,了解交通
模式、航班延误以及各航空公司与机场的关联方式。
由于路径查找算法相对简单,因此示例主要采用下述中心性算法和社团发现算法。
•
用
PageRank
算法查找有影响力的
Yelp
评论者,然后关联他们对特定酒店的评级。
•
用中间中心性算法发现连接多个群组的评论者,然后获取他们的偏好。
•
用标签传播算法以及投影操作为相似的
Yelp
业务创建超类别。
•
用度中心性算法在美国交通数据集中快速识别机场枢纽。
•
用强连通分量算法研究美国机场的航线簇。
7.1
使用
Neo4j
分析
Yelp
数据
Yelp
根据评论、偏好和推荐帮助人们查找当地商家。截至
2018
年底,用户在该平台上已
发表
1.8
亿多条评论。
Yelp
自
2013
年起举办了多场
Yelp
数据集挑战赛,鼓励人们探索和
研究
Yelp
的开放数据集。
第
12
届
Yelp
数据集挑战赛于
2018
年举办,其开放数据集包含以下内容。
•
700
多万条评论和提示。
•
150
多万用户和
28
万张照片。
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Publisher Resources
ISBN: 9787115546678