Distributed Subgraph Matching on Big Knowledge Graphs Using Pregel
Distributed Subgraph Matching on Big Knowledge Graphs Using Pregel
复制标题
使用 Pregel 在大知识图上进行分布式子图匹配
DOI:
10.1109/access.2019.2936465
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发表时间:
2019
期刊:
影响因子:
3.9
通讯作者:
Lele Chai
中科院分区:
文献类型:
--
作者:
Qiang Xu;Xin Wang;Jianxin Li;Qingpeng Zhang;Lele Chai
With RDF becoming the de facto standard for representing knowledge graphs, it is indispensable to develop scalable subgraph matching algorithms over big RDF graphs stored in distributed clusters. In this paper, we propose a novel distributed subgraph matching method SP-Tree, using the Pregel model, to answer subgraph matching queries on big RDF graphs. In our method, the query graph is transformed to a variant spanning tree based on the shortest paths. Two optimization techniques are proposed to improve the efficiency of our algorithms. One employs RDF shapes to filter out local computations and messages passed, the other postpones the Cartesian product operations in the matching process to reduce intermediate results. The extensive experiments on both synthetic and real-world datasets show that our SP-Tree subgraph matching method outperforms the state-of-the-art methods by an order of magnitude.
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DOI:
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发表时间:
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期刊:
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影响因子:
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DOI:
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期刊:
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