连续的RDF查询处理算法Continuous RDF Query Processing over DHTs |
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课程网址: | http://videolectures.net/iswc07_liarou_crdf/ |
主讲教师: | Erietta Liarou |
开课单位: | 数学与信息中心 |
开课时间: | 2008-02-01 |
课程语种: | 英语 |
中文简介: | 我们研究了对存储在分布式哈希表中的RDF数据进行联合三模式查询的连续评估。在连续查询场景中,网络节点订阅长期存在的查询,并在发布满足其查询的RDF三倍时接收答案。针对这种情况,我们提出了两种新的查询处理算法,并对其性能进行了形式化分析。我们的性能目标是使算法能够扩展到大量的RDF数据,均匀地分配存储和查询处理负载,并尽可能减少网络流量。我们通过对所提出算法的详细实验评估来讨论各种性能权衡。 |
课程简介: | We study the continuous evaluation of conjunctive triple pattern queries over RDF data stored in distributed hash tables. In a continuous query scenario network nodes subscribe with long-standing queries and receive answers whenever RDF triples satisfying their queries are published. We present two novel query processing algorithms for this scenario and analyze their properties formally. Our performance goal is to have algorithms that scale to large amounts of RDF data, distribute the storage and query processing load evenly and incur as little network traffic as possible. We discuss the various performance tradeoffs that occur through a detailed experimental evaluation of the proposed algorithms. |
关 键 词: | 计算机科学; 语义网; RDF - 资源描述框架 |
课程来源: | 视频讲座网 |
最后编审: | 2019-11-03:cwx |
阅读次数: | 10 |