12. RDF tutorial

RDF (Resource description Framework) is a W3C standard for describing network resources, such as the title, author, modification date, content and copyright information of a web page.

现在开始学习 RDF(资源描述框架) !

12.1. RDF document instance

<?xml version="1.0"?>
<rdf:RDF
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
xmlns:si="http://www.runoob.com/rdf/">
<rdf:Description rdf:about="http://www.runoob.com">
  <si:title>RUNOOB</si:title>
  <si:author>Jan Egil Refsnes</si:author>
</rdf:Description>
</rdf:RDF>
  • RDF (Resource description Framework) is a W3C standard for describing network resources, such as the title, author, mo...
    2025-10-25 12:23:46 UTC
  • Resource description Framework (RDF) is a W3C standard for describing web resources, such as the title, author, modifi...
    2025-10-25 12:23:45 UTC
  • RDF uses Web identifiers (URIs) to identify resources. RDF uses attributes and attribute values to describe r...
    2025-10-25 12:23:45 UTC
  • RDF instance ¶ This is a few lines of a CD list: ...
    2025-10-25 12:23:45 UTC
  • RDF 的主要元素是 <RDF> 以及可表示某个资源的 <Description> 元素。 < rdf:RDF > element ¶...
    2025-10-25 12:23:46 UTC
  • RDF 容器用于描述一组事物。举个例子,把某本书的作者列在一起。 下面的 RDF 元素用于描述这些的组:<Bag>、<Seq> 以及 <Alt>。 ...
    2025-10-25 12:23:45 UTC
  • The RDF collection is used to describe groups that contain only the specified members. Rdf:parseType= “C...
    2025-10-25 12:23:45 UTC
  • RDF Schema (RDFS) is an extension of RDF. Classes for RDF Schema and applications ¶ ...
    2025-10-25 12:23:45 UTC
  • The Dublin Core metadata Initiative (DCMI) has created some predefined properties to describe documents. ...
    2025-10-25 12:23:45 UTC
  • OWL is a language for processing web information. The basic knowledge that should be possessed before le...
    2025-10-25 12:23:45 UTC
  • RDF Namespace ¶ RDF namespace (xmlns:rdf): http://www.w3.org/1999/02/22-rdf-...
    2025-10-25 12:23:45 UTC

Principles, Technologies, and Methods of Geographic Information Systems  102

In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress.