rdf triple

same, they must be both XML texts or simple texts. In addition, neither of them has a language tag or the same language tag. For simple text, the strings of the two must be the same. There are two requirements for the equality of XML text. First, the preceding requirements must be met and the strings must be the same. Second, if the cannonicalization of their strings is the same, they are the same. (Note: The Chinese explanation of cannonicalization is not found .).The Jena interface also suppo

Reprinted from http://www.cnblogs.com/yuyd902/archive/2008/10/08/1306647.html This article is a translation of "An Introduction to RDF and the Jena rdf api", which is annotated in appropriate places. Some Code provides jruby implementation. PrefaceThis article is a tutorial on W3C Resource Description Framework (RDF) and Jena (a Java

Simple Information Title Sesame: a generic architecture for storing and querying RDF and RDF Schema Conference the Semantic Web-iswc, Springer year 2002 author J broekstra, A kampman, f Van Harmelen level Comment Can deepenRDFUnderstanding

set. That is, three common set operations: Sum, intersection, and difference. The merge operation of the two models is to represent and operate the statement set of the two models. This is one of the key operations supported by the RDF design. This operation allows you to merge separated data sources. Consider the following two models: And When they are merged, the two http://...JohnSmith will be merged into one, the duplicate vCard: FN arrow will be

implement a SPARQL engine for your database which cocould be rather complex or use an API that does SPARQL in-memory but this will have the overhead of needing read out some/all of the data from HBase first.Personally I don't know enough about HBase to say whether such an approach is viable or sensible, if you have hardware on which you can install and run HBase then you wocould most likely be better off installing and running a Triple Store for your

discrete data entry)• Include connections with other URIs so that people can find more useful things (that is, creating discrete data outlets)• Triples are used to store data.In fact, some RDF versions do not use the XML language, but mainly refer to the initial version. A simple RDF example Copy codeThe Code is as follows: Xmlns: dc = "http://purl.org/dc/elements/1.1/"> The following list is displayed whe

base language • Use URIs as the name of the real thing • Use HTTP URIs to make people know how to find data in a network by name (that is, create discrete data portals) • Contains links to other URIs that allow people to find more useful things (i.e., create discrete data exits) • Storing data using ternary (Triple) forms In fact, some versions of RDF are not in the XML language, and this is basically the

specific RDF property Associating it with other objects Re-read the Bean again Jenabean programming Model Consider the simple RDF example in Listing 1, which uses the N-triple (N3) format for easy reading: Listing 1. RDF sample (N3 format) 　　 a　　　 dc:Article ; 　　 dc:creator "Philip McCarthy"^^xsd:string ; 　　 dc

The Resource Description Framework (RDF) is a basic ontology description language. It provides a common data model that allows you to describe web resources. • Resources: All things named on the web and referenced by Uris • Description: a declaration of the resource features, including the attributes of the resource and the relationship between the resources• Framework: a general model unrelated to the resources to be described and their fields. In fa

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Triple Realm of PHP decoupling (talking about service containers) and Triple Realm Before reading this article, you need to understand: PHP syntax, object-oriented In the process of completing the entire software project development, sometimes many people need to work together, and sometimes they can do it independently, no matter which one. As the amount of Code increases, the writing will be "out of contr

of this article. If you Have any Content, you can combine the Have Content, Will Syndicate) From the very beginning -- what is RSS? RSS (RDF Site Summary) is a format first designed by Netscape to distribute the description of content on its portal My. Netscape. Com. Since it was proposed in 1997, there have been ups and downs-you can click the link at the end of the article to learn about the long and complex history of RSS. The current stable v

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

ArticleDirectory 2.1 extensions) 2.2 chrome 2.3 xulrunner 2.4 XPCOM 2.5 XP install 3.1 Firefox extension Structure 3.2 extended Installation Process 3.3 Analysis of the XP install Module 3.4 analysis of the rdf Module 3.5 extended Startup Process 4.1 difficulties in Analysis 4.2 analysis gains I am too lazy to organize the following figure. Upload a PDF file directly. If you are interested, check it out. I

Triple Realm of PHP decoupling (talking about service containers) and Triple Realm Before reading this article, you need to understand: PHP syntax, object-oriented In the process of completing the entire software project development, sometimes many people need to work together, and sometimes they can do it independently, no matter which one. As the amount of Code increases, the writing will be "out of contr

Both the Semantic Web (SemanticWeb) and the Semantic Grid (SemanticGrid) technologies depend on the flexible description language, ResourceDescriptionFramework (RDF. The RDF format is actually a member of a standard family. It is used to describe information and resources, making it easy for the system to connect and associate different resources. RDF is another

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 about is the

Ontology comes from philosophical Vocabulary: Ontology (also translated into ontology ). RDF is a good way to describe Ontology. we can define the knowledge of a domain based on our understanding of the real world. However, RDF and RDF cannot define synonyms, antonyms, and relationships between descriptive words (relationships between classes and classes), such a

An RDF graph can be written in the following way:1 All blank nodes are assigned blank node identifiers.Blank node identifiers are specified for all blank nodes ).2 each node is listed in turn as the subject of an un-nested RDF: Description element, using an RDF: About attribute if the node has a uriref, Or an RDF: nod

RDF is the abbreviation of Resource description framework, that is, the Resource Description Framework. RDF is an XML application that processes metadata. The so-called metadata is "data describing data" or "information describing information ". It may be difficult to understand the metadata. For example, the content of a book is the data of a book, and the author's name, publisher's address, or copyright i