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Produktbeschreibungen
Kurzbeschreibung
The Resource Description Framework (RDF) is a structure for describing and interchanging metadata on the Web--anything from library catalogs and worldwide directories to bioinformatics, Mozilla internal data structures, and knowledge bases for artificial intelligence projects. RDF provides a consistent framework and syntax for describing and querying data, making it possible to share website descriptions more easily. RDF's capabilities, however, have long been shrouded by its reputation for complexity and a difficult family of specifications. Practical RDF breaks through this reputation with immediate and solvable problems to help you understand, master, and implement RDF solutions. Practical RDF explains RDF from the ground up, providing real-world examples and descriptions of how the technology is being used in applications like Mozilla, FOAF, and Chandler, as well as infrastructure you can use to build your own applications. This book cuts to the heart of the W3C's often obscure specifications, giving you tools to apply RDF successfully in your own projects. The first part of the book focuses on the RDF specifications. After an introduction to RDF, the book covers the RDF specification documents themselves, including RDF Semantics and Concepts and Abstract Model specifications, RDF constructs, and the RDF Schema. The second section focuses on programming language support, and the tools and utilities that allow developers to review, edit, parse, store, and manipulate RDF/XML. Subsequent sections focus on RDF's data roots, programming and framework support, and practical implementation and use of RDF and RDF/XML. If you want to know how to apply RDF to information processing, Practical RDF is for you. Whether your interests lie in large-scale information aggregation and analysis or in smaller-scale projects like weblog syndication, this book will provide you with a solid foundation for working with RDF.
Synopsis
The Resource Description Framework (RDF) is a structure for describing and interchanging metadata on the Web - anything from library catalogs and worldwide directories to bioinformatics, Mozilla internal data structures, and knowledge bases for artificial intelligence projects. RDF provides a consistent framework and syntax for describing and querying data, making it possible to share website descriptions more easily. RDF's capabilities, however, have long been shrouded by its reputation for complexity and a difficult family of specifications. Practical RDF breaks through this reputation with immediate and solvable problems to help you understand, master, and implement RDF solutions. This volume explains RDF from the ground up, providing real-world examples and descriptions of how the technology is being used in applications like Mozilla, FOAF, and Chandler, as well as infrastructure you can use to build your own applications. This book aims to cut to the heart of the W3C's often obscure specifications, giving you tools to apply RDF successfully in your own projects. The first part of the book focuses on the RDF specifications.After an introduction to RDF, the book covers the RDF specification documents themselves, including RDF Semantics and Concepts and Abstract Model specifications, RDF constructs, and the RDF Schema. The second section focuses on programming language support, and the tools and utilities that allow developers to review, edit, parse, store, and manipulate RDF/XML. Subsequent sections focus on RDF's data roots, programming and framework support, and practical implementation and use of RDF and RDF/XML.
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Buchdeckel | Copyright | Inhaltsverzeichnis | Auszug | Stichwortverzeichnis | Rückseite
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18 Rezensionen
12 von 12 Kunden fanden die folgende Rezension hilfreich
Tech review missing
7. Januar 2005
Format:Taschenbuch
There's a lot of information in this book, and there's really no alternative source for much of it. The RDF spec kept changing while this book was being written, which accounts for how some of the inconsistencies and inaccuracies got into the text.
However, it wasn't proofreading that should have caught these problems but the technical reviewers. They flat fell down on the job. On page 20, for instance, the text says that "in all instances of RDF graphs I've seen, [the direction of the arrows] is from right to left." Right below it, and in all the graphs in the book and in all RDF graphs that _I_ have seen, they point from left to right.
Or on page 41, the text says "a blank node is represented by an oval (it is a resource)" and in all the book's figures, blank nodes are represented by rectangles. Many other such maddening inconsistencies occur between the text and the figures and examples, which frustrates someone trying to learn what's going on.
Every writer gets some things wrong, and it's up to the publisher and its tech review to catch and correct them. Powers may have written uninspiredly and slipped up in her revising, but it's O'Reilly and the four people who provided technical review that is more at fault for the problems.
However, it wasn't proofreading that should have caught these problems but the technical reviewers. They flat fell down on the job. On page 20, for instance, the text says that "in all instances of RDF graphs I've seen, [the direction of the arrows] is from right to left." Right below it, and in all the graphs in the book and in all RDF graphs that _I_ have seen, they point from left to right.
Or on page 41, the text says "a blank node is represented by an oval (it is a resource)" and in all the book's figures, blank nodes are represented by rectangles. Many other such maddening inconsistencies occur between the text and the figures and examples, which frustrates someone trying to learn what's going on.
Every writer gets some things wrong, and it's up to the publisher and its tech review to catch and correct them. Powers may have written uninspiredly and slipped up in her revising, but it's O'Reilly and the four people who provided technical review that is more at fault for the problems.
19 von 21 Kunden fanden die folgende Rezension hilfreich
Good, but....
6. April 2004
Format:Taschenbuch
Normally, I like O'Reilly books. I've probably bought over 50 of them over the years. This one, however, is not up to their usual standards. While the subject, RDF, is interesting and I feel that the pace and content of the book are good. I find that there are so many typographical errors in the book - at least in the copy that I have - that it takes more effort to figure out what it is that the author means, as opposed to what the text is actually saying, than it's worth. There are places where the text contains contradictions, there are places where the examples are incorrect, and there are places where the information presented is downright wrong. I do not feel that the fault is solely the author's, nor do I feel that the fault lies solely with O'Reilly's editors. But what could have been a good, informative book has been brought low by a lack of proofreading.
If you're really interested in RDF, you may well do better by going to the W3C web site and reading the specifications there than by reading this book.
11 von 11 Kunden fanden die folgende Rezension hilfreich
Many typos and mediocre writing style ...
29. Dezember 2004
Format:Taschenbuch
I bought this book because I would to have a printed source of information to RDF concepts and syntax. Also, I hoped to see some examples and ideas of RDF applications beyound of the (in)famous Semantic Web.
My expectations were fulfilled only partially.
First, the book was somewhat difficult to read because of typos and discrepancies e.g. between RDF examples and figures of graphs that were generated from them.
Only one application of RDF is shown in good detail through the book: PostCon vocabulary/schema developed by the author herself.
RSS is covered in a separate chapter, but I would not reccomend Practical RDF for somebody who wants to get an introduction to RSS technology - version 2.0 of RSS being not RDF-based is not covered in the book.
I agree with the author that RDF technology has a huge potential, but this declaration is not proved by most of this book's examples.
Tools and applications are only described briefly in getting started guide style - I would rather go google for up-to-date version of the same info.
Also, there is little fun found reading that book. Style is rather dull - not unlike the style I use in this review, but extended to 300+ pages.
My expectations were fulfilled only partially.
First, the book was somewhat difficult to read because of typos and discrepancies e.g. between RDF examples and figures of graphs that were generated from them.
Only one application of RDF is shown in good detail through the book: PostCon vocabulary/schema developed by the author herself.
RSS is covered in a separate chapter, but I would not reccomend Practical RDF for somebody who wants to get an introduction to RSS technology - version 2.0 of RSS being not RDF-based is not covered in the book.
I agree with the author that RDF technology has a huge potential, but this declaration is not proved by most of this book's examples.
Tools and applications are only described briefly in getting started guide style - I would rather go google for up-to-date version of the same info.
Also, there is little fun found reading that book. Style is rather dull - not unlike the style I use in this review, but extended to 300+ pages.
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