Millions of people use a lot of content on the World Wide Web. Many users use web search engines to start web activities. Normally, queries are a list of keywords, and the result returned is a list of pages where there is a relevance or not (usually a page containing the keyword [4]). Today 's network has no metadata that can be read by other computers. Metadata is data on data, so it can be distinguished in 1984 (number), 1984 (date), 1984 (movie starring John Hurt), 1984 (George Orwell novel). .
The Semantic Web uses semantic data modeling techniques such as Resource Description Framework (RDF) and Web Ontology Language (OWL) to point to the extension of the World Wide Web by embedding the added semantic metadata. In the Semantic Web terms such as semantic networks and semantic data models are used to denote a specific type of data model characterized by using directed graphs, vertices represent world concepts or entities, arcs are relations . Between them. These can be formally explained as describing logical concepts and roles corresponding to OWL classes and attributes.
In an article entitled "Semantic Web" in 2001, Tim Berners-Lee (the creator of the World Wide Web) and his collaborators said that in order to make the computer better, the computer would have "semantic on the Web" data "Because data is encoded with a specific machine-readable meaning and logic, software can automatically understand and execute complicated tasks.Then software can be executed by application or Web You can communicate massively between sites (and users using them), a "semantic web" is an initial representation of the Web 0 system where software, applications and users interact with each other.
Web 0 is called "Semantic Web" proposed by Berners-Lee. This allows you to add semantic layers to existing webs and limited webs. In this way, we try to lead us to a network that can process and interpret semantic content that generates an independent intelligent agent from links to other grammar networks of other pages and documents . Unfortunately, the Semantic Web has not had the expected impact since it was proposed so far. One of the reasons is that developers are not very interested in inserting semantic content into their products, and academia went to create functional and attractive tools in the business world It is a very bad advertisement.