A Developer’s Guide to the Semantic Web - download pdf or read online

By Liyang Yu

The Semantic internet represents a imaginative and prescient for a way to make the large quantity of knowledge on the net immediately processable through machines on a wide scale. For this objective, an entire suite of criteria, applied sciences and comparable instruments were designated and constructed over the past couple of years, they usually have now develop into the root for various new applications.

A Developer’s advisor to the Semantic Web is helping the reader to profit the center criteria, key parts, and underlying recommendations. It presents in-depth assurance of either the what-is and how-to elements of the Semantic net. From Yu’s presentation, the reader will receive not just an excellent figuring out concerning the Semantic internet, but additionally find out how to mix every thing to construct new purposes at the Semantic Web.

Software builders in and scholars focusing on net improvement or Semantic net applied sciences will locate during this publication the main whole advisor to this fascinating box to be had this day. in keeping with the step by step presentation of real-world initiatives, the place the applied sciences and criteria are utilized, they'll collect the information had to layout and enforce cutting-edge applications.

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Extra resources for A Developer’s Guide to the Semantic Web

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Fortunately, the Web provides a more general form of identifier for this purpose, and it is called the Uniform Resource Identifier (URI). In general, URLs can be understood as a particular kind of URI. Therefore, a URI can be created to identify anything that can be retrieved directly from the Web and also to represent anything that is not network accessible, such as a human being, a building, or even an abstract concept that does not physically exist, such as the picture quality of a given camera.

Summarizing the above discussion, we have come to an understanding of an important fact: our Web is constructed in a way that its documents only contain enough information for a machine to present them, not to understand them. Now the question is the following: is it still possible to re-construct the Web by adding some information into the documents stored on the Web, so that machines can use this extra information to understand what a given document is really about? The answer is yes, and by doing so, we in fact change the current (traditional) Web into something we call the Semantic Web – the main topic of this chapter and this whole book.

However, there is some subtle fact about URL that most of us are not familiar with: URL is often used to identify a Web resource that can be directly retrieved on the Web. com This URL is used not only to identify my home page, but also to retrieve it from the Web. 28 2 The Building Block for the Semantic Web: RDF On the other hand, there are also lots of resources in the world that can be identified on the Web, but cannot be directly retrieved from the Web. For example, I myself as a person, can be identified on the Web, but cannot be directly retrieved from the Web.

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