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Download e-book for iPad: Linked Data: Structured data on the Web by David Wood, Marsha Zaidman, Luke Ruth, Michael Hausenblas

By David Wood, Marsha Zaidman, Luke Ruth, Michael Hausenblas

ISBN-10: 1617290394

ISBN-13: 9781617290398

The present internet is really a choice of associated records precious for human intake. The evolving net contains info collections which may be pointed out and associated if you want to be ate up through computerized tactics. The W3C method of this can be associated information and it truly is already utilized by Google, fb, IBM, Oracle, and govt organizations worldwide.

Linked facts offers sensible thoughts for utilizing associated info on the internet through widely used instruments like JavaScript and Python. You'll paintings step by step via examples of accelerating complexity as you discover foundational suggestions corresponding to HTTP URIs, the source Description Framework (RDF), and the SPARQL question language. Then you'll use a number of associated info rfile codecs to create robust internet purposes and mashups.

Written to be instantly necessary to internet builders, this e-book calls for no prior publicity to associated info or Semantic net applied sciences.

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Additional info for Linked Data: Structured data on the Web

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If you execute this command in a console, it will print RDF data describing a bonobo in a serialization called N3. That’s because the given URI identifies the concept of a bonobo, and you expect to get back a Linked Data description of a bonobo when you resolve it. You’ll see a lot of Linked Data in this book, and almost all of it will be in a format known as Turtle. Turtle is a minimal syntax for representing the RDF data model and is meant to be easy to read. n3 file extension for both formats.

Here are some quick facts regarding the LOD cloud. net/ state/). All of this data is available for use by developers! As of late 2011, the LOD cloud contained over 295 datasets from various domains, including geography, media, government, and life sciences. In total the LOD cloud contained over 31 billion data items and some 500 million links between them. The LOD cloud has grown so large that no attempt was made to visualize it in 2012. More than 40% of the Linked Data in the LOD cloud is contributed by governments (mainly from the United Kingdom and the United States), followed by geographical data (22%) and data from the life sciences domain (almost 10%).

12 CHAPTER 1 Introducing Linked Data You’re already familiar with HTTP URLs. They’re the type of URLs most commonly found on the Web. You type one into your browser’s address bar, and you get a web page back. Your browser can also handle other types of URLs, such as those for the File Transfer Protocol (FTP), whose URLs start with ftp://. You might also have seen the file: URL used for accessing files on your local disk. Just as URLs unambiguously locate web pages so that everyone arrives at the same document when typing in a certain URL, Linked Data’s use of URIs provides the means to name things unambiguously.

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Linked Data: Structured data on the Web by David Wood, Marsha Zaidman, Luke Ruth, Michael Hausenblas


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