rdf example semantic web

language is required for semantic-based unified presentation and interaction of Web Information. OntologyThis topic provides a unified set of terms for members in the same application field and can conceptual representation of the descriptive objects. One OntologyConcept class, LinkFunctions, functions, and instances. OntologyThe concept is a broad concept. It can be a general concept, a task, a function,

door for the combination of simple content on the Web. For more information, see the following simple example: Site A is A news site ("content sindiga organizer"). it can publish an RSS document containing the latest news list and corresponding links hourly. This RSS document can be obtained by other sites (such as site B and content collectors) and analyzed and displayed on the index page of Site B. Each

echo "$item ["title"]. "}}?>Each time you reload the above script, the corresponding RDF file is taken from a specific location, and after analysis, it is displayed in the required format.If your site has a high volume of traffic, you may find our hard work meaningless, especially if the RDF data is not being updated as quickly. In this case, perhaps it would be wise to explore the local caching of

. Multiple declarations of the same subject can be combined into an RDF: Description element. RDF Schema:Extended to RDF, which can be used to describe and define classes and attributes related to a specific application, so as to create a custom vocabulary, such as a dictionary Expression Language. Functions of RDFS: Define the categories of resources and a

web| Insert | Site free lunch (A lunch) The class I wrote above is also very basic, is to illustrate the problem, perhaps also can be used for low traffic site. If you're looking for something more professional, go online, there are many open source RDF parsers with a variety of additional features (including caching). So let's look at some examples of how to use these analyzers. The first one to talk abo

can click on the link at the end of the article to understand the history of RSS long and complex. The current stable version is RSS1.0, which conforms to the RDF specification. This version can be said to be lightweight and full-featured. RSS makes it possible for network administrators to publish and distribute the descriptive information of the latest and most interesting content in a particular location in a particular site in a timely manner. F

Create, read, update, and delete (Create/read/update/delete,crud) operations are the most basic database operations, but they are also the most important operations. CRUD operations are usually done using the Structured Query Language (structured query language,sql) in the relational database system. As the Web becomes more data-oriented, it needs to move from sql-based crud operations to a semantic

whether the web application can correctly determine the semantic information of the web content. We have noticed many things with semantic information, such as subjective terms and expressions, behavioral languages used for communication between agents, and representation languages (

web| Insert | Site Since RSS is technically a well-formed XML document, it can be handled using standard XML programming techniques. There are two main technologies: SAX (The simple API for XML) and Dom (the Document Object Model). The SAX parser traverses the entire XML document while it is working, and calls a specific function when it encounters a type-free tag. For example, call a specific function to

web| Insert | The site returns to the class (Back to Class) Since you have so much power, why should you limit yourself to just a single source of RDF? As I said earlier, most major sites often take snapshots of what they provide. In fact, it's fairly easy to insert all these different sources into your site. Let's see how it's done. First, we modularize the code in the previous

Data Processor (Characterdata) first.Character Data Handlerfunction Characterdata ($parser, $data){Global $currentTag, $flag,If within an item block, print item dataif ($currentTag = = "TITLE" | | $currentTag = = "LINK" | |$currentTag = ="DESCRIPTION") $flag = = 1){echo "$currentTag: $data }}Now you can look at the parameters passed to this function, and you'll find that it only receives data between the open and closed tags, and doesn't know which tag the parser is currently working on. And t

After the introduction of the semantic web concept, researchers in Chinese institutions and universities have paid great attention to it. They have carried out in-depth research on the Semantic Web research content, some gratifying achievements have been made in the Basic Semantic