Download e-book for iPad: A Developer’s Guide to the Semantic Web by Liyang Yu

By Liyang Yu

ISBN-10: 3642159699

ISBN-13: 9783642159695

The Semantic internet represents a imaginative and prescient for the way to make the massive quantity of data on the internet immediately processable through machines on a wide scale. For this goal, a complete suite of criteria, applied sciences and comparable instruments were specific and constructed during the last couple of years, and so they have now develop into the basis for varied new applications.

A Developer’s consultant to the Semantic Web is helping the reader to benefit the middle criteria, key parts, and underlying strategies. It offers in-depth assurance of either the what-is and how-to facets of the Semantic net. From Yu’s presentation, the reader will receive not just a high-quality knowing concerning the Semantic net, but additionally find out how to mix the whole lot to construct new purposes at the Semantic Web.

Software builders in and scholars focusing on internet improvement or Semantic net applied sciences will locate during this publication the main entire consultant to this interesting box to be had this present day. according to the step by step presentation of real-world tasks, the place the applied sciences and criteria are utilized, they'll gather the data had to layout and enforce state of the art applications.

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Additional info for A Developer’s Guide to the Semantic Web

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Com/ 30 2 The Building Block for the Semantic Web: RDF except the URI for Nikon, the manufacturer of the camera. org/resource/Nikon In fact, we did not coin this URI, and it is an existing one. So why should we use an existing URI to represent Nikon? The reason is very simple: if a given resource has a URI that identifies it already, we should reuse this existing URI whenever we can. In our case, we happen to know the fact that the above URI created by DBpedia project4 (DBpedia is a well-known application in the world of the Semantic Web; you will see more details about it in Chap.

26 2 The Building Block for the Semantic Web: RDF Fig. 3 Graph structure of RDF statement Therefore, an RDF statement must have the following format: subject predicate object where the subject and object are names for two things in the world, with the predicate being the name of a relation that connects these two things. 3 shows the graph structure of a statement. Note that Fig. 3 shows a directed graph: the subject is contained in the oval on the left, the object is the oval on the right, and the predicate is the label on the arrow, which points from the subject to the object.

However, since early 2007, especially with the development of Linked Data project, dereferencing URIs in RDF models should return some content back, so that both human readers and applications can make use of the returned information. You will see more about Linked Data project and understand more about URIs in Chap. 11. For now, it is important to remember that URIs in RDF models should be dereferencable URIs. Therefore, if you mint a URI, you are actually required to put something at that address so that RDF clients can access that page and get some information back.

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A Developer’s Guide to the Semantic Web by Liyang Yu

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