RDF is not like the tabular data model of relational databases. Nor is it like the trees of the XML world. Instead, RDF is a graph. 图3-1:W3C 语义网 标准栈 RDF由节点和边组成,节点表示实体/资源、属性,边则表示了实体和实体之间的关系以及实体和属性的关系。 在RDF中,知识总是以三元组的...
关联数据(Linked Data)是第一种可行的语义网表达形式,它采用RDF数据模型,利用URI(统一资源标识符)命名数据实体,来发布和部署实例数据和类数据,从而可以通过HTTP协议揭示并获取这些数据,同时强调数据的相互关联、相互联系以及有益于人机理解的语境信息。 Linked data is a set of best practices for publishing and de...
关系数据格式RDF，全称为Relational Data Format，是一种专为满足不同开发人员需求而设计的数据存储和交换格式。Navteq，一家提供各类地图数据和内容的公司，将其作为其数据格式之一。RDF最初的构想是在2004年由Navteq提出，其目标是服务于多元化的应用场景，例如汽车导航系统、公路养护系统、公路运输信息管理，...
We discuss in this paper the use of NoSQL (Not Only SQL) databases to store massive amounts of RDF data, we also present an overview of state of the art concerning RDF data storage techniques and solutions in different NoSQL database models.Mouad Banane...
论文英文标题: Graph-based Indexing Method for Searching in RDF Data 论文中译标题:基于图形的RDF数据索引方法 来源:2019 International Conference on Advanced Information Technologies (ICAIT) 作者:Khin Myat Kyu, Aung Nway Oo 编译:任腾龙,孙静正,刘博艺,数据挖掘组 ...
Data层是我们用RDF对罗纳尔多知识图的具体描述,Vocabulary是我们自己定义的一些词汇(类别,属性),RDF(S)则是预定义词汇。从下到上是一个具体到抽象的过程。图中我们用红色圆角矩形表示类,绿色字体表示rdf:type,rdfs:domain,rdfs:range三种预定义词汇,虚线表示rdf:type这种所属关系。另外,为了减少图中连线的交叉,我们...
Using a basic structure derived from the RDF data, we propose a two-phase algorithm involving clustering and partitioning. The clustering phase aims to reduce the need for joins in a query. The partitioning phase aims to optimize storage of extra (i.e., null) data in the underlying ...
▌二、语义网(Semantic Web)和链接数据(Linked Data) 语义网和链接数据是万维网之父 Tim Berners Lee 分别在1998年和2006提出的。相对于语义网络,语义网和链接数据倾向于描述万维网中资源、数据之间的关系。其实,本质上,语义网、链接数据还有 Web 3.0 都是同一个概念,只是在不同的时间节点和环境中,它们各自描述...
RDF Data for performing benchmarks Please ensure you haveGit LFSinstalled, before you clone this repository. There's currently around 450MB worth data in this repository. Contributors21 + 7 contributors Languages Go84.0% Jupyter Notebook11.0% ...
A Survey on RDF Data Store Based on NoSQL Systems for the Semantic Web ApplicationsToday the Resource Description Framework (RDF) that allows computers to understand and exploit Web data becomes very much in a progressive way, as well as the amount of web data that becomes very......