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链接数据即服务:语义网络的重新部署

Linked Data-as-a-Service: The Semantic Web Redeployed
课程网址: http://videolectures.net/eswc2015_beek_semantic_web/  
主讲教师: Wouter Beek
开课单位: 阿姆斯特丹自由大学
开课时间: 2015-07-15
课程语种: 英语
中文简介:
特别查询对于从Linked Data访问信息至关重要，但是在Web上发布可查询的RDF数据集并不是一件简单的事情。支持这种说法的最有力的论据是，Web包含数十万个数据文档，而只提供了260个可查询的SPARQL端点。更糟糕的是，我们拥有的SPARQL端点通常不稳定，可能不符合标准，并且可能在支持的特性上有所不同。换句话说，在线托管数据很容易，但通过SPARQL等可查询API发布关联数据似乎太困难了。因此，在实践中，目前还没有一种统一的方法来查询LOD云。因此，在本文中，我们将一个大型关联数据发布项目(LOD Laundromat)与一个低成本的服务器端接口(Triple Pattern Fragments)结合在一起，以弥合可下载数据文档的Web和可实时查询数据的Web之间的差距。结果是一个可重复的、低成本的、开源的数据发布过程。为了证明它的适用性，我们提供了超过65万个数据文档作为数据api，由300亿个三元组组成。
课程简介: Ad-hoc querying is crucial to access information from Linked Data, yet publishing queryable RDF datasets on the Web is not a trivial exercise. The most compelling argument to support this claim is that the Web contains hundreds of thousands of data documents, while only 260 queryable SPARQL endpoints are provided. Even worse, the SPARQL endpoints we do have are often unstable, may not comply with the standards, and may differ in supported features. In other words, hosting data online is easy, but publishing Linked Data via a queryable API such as SPARQL appears to be too difficult. As a consequence, in practice, there is no single uniform way to query the LOD Cloud today. In this paper, we therefore combine a large-scale Linked Data publication project (LOD Laundromat) with a low-cost server-side interface (Triple Pattern Fragments), in order to bridge the gap between the Web of downloadable data documents and the Web of live queryable data. The result is a repeatable, low-cost, open-source data publication process. To demonstrate its applicability, we made over 650,000 data documents available as data APIs, consisting of 30 billion triples.
关 键 词: 特别查询; 托管数据; 链接数据; 数据文档
课程来源: 视频讲座网
数据采集: 2023-03-20：chenxin01
最后编审: 2023-05-17：chenxin01
阅读次数: 28

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