Web 2 0 Web 2 0Web 1 0

Web 2. 0简介

Web 2. 0与Web 1. 0的对比

Web 1. 0 与 Web 2. 0

编码语言的发展 Modal Logic First Order Logic Human Language strong semantics OWL+ SWRL, KIF Logical Theory Is Disjoint Subclass of with transitivity property Description Logic DAML+OIL, OWL UML Conceptual Model Semantic Interoperability RDF/S Expressiveness Taxonomy Thesaurus DB Schemas, XML Schema XTM Is Subclass of Extended ER ER Has Narrower Meaning Than Structural Interoperability Relational Model, XML Is Sub-Classification of weak semantics Formality Syntactic Interoperability source: Leo Obrst, MITRE – Jan. 2004

. NET� 准的XML：Web 2. 0的� 言 • XML在 Web 2. 0中普遍使用； • XML是web服务的语言 (SOAP, XML-RPC, REST). • XML 是 web 协同 (RSS, ATOM)的语言 • XML AJAX的数据交换格式的语言(via the XMLHttp. Request Object “response. XML” proprety). • XML 越来越多的Web应用的语言 – XHTML, Voice. XML, XSLT, 等等.

微内容Microcontent ‘Microcontent’ 由Jakob Nielsen提出，指一小段包含元数 据的文本，有特定的内容。 microcontent is a finite collection of metadata and data that has at least one unique identity and at least one unique address on the network, and that encapsulates no more than a small number of central ideas, where the number of central ideas encapsulated is usually 1. http: //novaspivack. typepad. com/nova_spivacks_weblog/2 003/12/defining_microc. html

知识本体框架中元数据元素的关系图示 图片来自 IFLA “Functional Requirement for Bibliographic Records” http: //www. ifla. org/VII/s 13/frbr. pdf