This highlights how the major search engines have begun to evolve into answering engines which rely on structured data from the Web. Please refer to Section 4. RDFS also provides primitives for describing relationships between classes and between properties. In addition, while certain basic data, such as triples giving the label or type of a resource, may be required by every application consuming the data, the data publisher cannot anticipate every potential use of the data and therefore cannot easily make meaningful decisions regarding what additional data about B should be included in a description of A. For example, many content management systems will enable publishers to configure the HTML templates used to expose different types of information, but may not be flexible enough to support redirects and HTTP content negotiation. In cases where a comment or textual description of the resource is available, these should be published using predicates such as dcterms:
Following this principle, the same two triples would be published in the document describing Matt Briggs. These heuristics may compare multiple properties of the entities that are to be interlinked as well as properties of related entities. However, this redundancy is also the primary advantage of N-Triples over other serialization formats, as it enables N-Triples files to be parsed one line at a time, making it ideal for loading large data files that will not fit into main memory. Alternatively, just one target data set may be chosen based on the criteria described in Section 4. RDF provides a generic, abstract data model for describing resources using subject, predicate, object triples.
Recent drives to increase government transparency, most notably in countries such as Australia 39New Zealand 40the U. Geonames is an open-license geographical database that publishes Linked Data about 8 jennifer jentzsch thesis locations. This principle can be seen as extending the scope of the Web from online resources to encompass any object or concept in the world.
The approach taken in the two countries differs slightly: Then, it connects to the server at biglynx. Perhaps the licenses in most widespread usage on the Web jennifer jentzsch thesis those developed by the Creative Commons initiative 87jennifer jentzsch thesis allow content owners to attach conditions, such as attributionto the reuse of their work. The following aspects of best practice should be taken into consideration when defining vocabularies:.
An overview of the tasks handled by these modules is given below:. Together these techniques enable Linked Data applications to discover the meta-information that they need to integrate data in a follow-your-nose fashion along RDF links. Only the beginning of this description is shown. This static profile document will be published at http: It uses the crawled data to provide richer and more structured search jennifer jentzsch thesis to its users in the form of Rich Snippets In particular, Linked Data provides:.
Once this language is finished, it might replace the solutions described above. If IMDb adopted the Linked Data principles it would constitute a highly appropriate target for such linking. jennifer jentzsch thesis
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We want to use the graph name to group triples on the web page and to display the URI from where a triple was retrieved next to each triple. The Web of Data can be seen as an additional layer that is tightly interwoven with the classic document Web and has many of the same properties:. Lists of Jennifer jentzsch thesis tools that can be used for this conversion can be found at and Similar to the classic document Web, the Web of Data is built on a small set of standards and jennifer jentzsch thesis idea to use links to connect content from different sources.
A key factor in the re-usability of data is the extent to which it is jennifer jentzsch thesis structured. Increasing numbers of data providers and application developers have adopted Linked Data. Namespace prefixes are used to improve the readability of the code that defines the vocabulary.
The Web is intended to be an information space that jennifer jentzsch thesis be used by humans as well as by machines. Where a particular Web site is seen as authoritative in a particular domain, and it provides stable URIs for entities in this domain or pages about those entitiesit can be very tempting to try and misappropriate these URIs for use in a Linked Data context.
Linked Data is made available on the Web using a wide variety of tools and publishing patterns.
Linked Data: Evolving the Web into a Global Data Space
This allows these names to be looked up using any client, such as a Web browser, that speaks the HTTP protocol. This simply means taking the triples that make up an RDF graph, and using a particular syntax to write these out to a file either in advance for a static data set or on demand if the data set is more dynamic.
There are various proposals for notification mechanisms to handle this task, an overview of jennifer jentzsch thesis is given in jennifer jentzsch thesis.
The code jennifer jentzsch thesis below shows what this company profile looks like, converted jennifer jentzsch thesis the Turtle serialisation of RDF. References  and  provide background information on the topic of minting Cool URIs and are recommended reading. Those considering this approach should also refer to Section 5. Therefore, while Web APIs make data jennifer jentzsch thesis on the Webthey do not place it truly in the Webmaking it linkable and therefore discoverable.
Wherever possible, locations in Geonames and LinkedGeoData are interlinked with corresponding locations in DBpedia, ensuring there is a core of interlinked data about geographical locations. Turtle is a plain text format for serializing RDF data. Some of the earliest data sets in the Web of Data were based on conversions of, or wrappers around, Web 2. The server would answer:. The nature of the data being published will determine which terms make suitable predicates for linking to other data sets.
Servers can inspect these headers and select an appropriate response. SKOS is a vocabulary for expressing conceptual hierarchies, often referred to as taxonomies, while RDFS and OWL provide vocabularies for describing conceptual models jennifer jentzsch thesis terms of classes and their properties. The World Wide Web has enabled the creation of a global information space comprising linked documents. It is also possible to change the policy later on.
This makes it significantly easier to link your book data with that from other sources as there is a common key jennifer jentzsch thesis which links can be based. Of equal importance to incoming links are outgoing links. This book gives an overview of the principles of Linked Data as well as the Web of Data that jennifer jentzsch thesis emerged through the application of these principles.