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RDFa allows HTML authors to do just that. Using a few simple HTML attributes, authors can mark up human-readable data with machine-readable indicators for browsers and other programs to interpret. A web page can include markup for items as simple as the title of an article, or as complex as a user's complete social network
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27 Feb 13
Ben GThe web is a rich, distributed repository of interconnected information. Until recently, it was organized primarily for human consumption. On a typical web page, an HTML author might specify a headline, then a smaller sub-headline, a block of italicized text, a few paragraphs of average-size text, and, finally, a few single-word links. Web browsers will follow these presentation instructions faithfully. However, only the human mind understands what the headline expresses-a blog post title. The sub-headline indicates the author, the italicized text is the article's publication date, and the single-word links are subject categories. Computers do not understand the nuances between the information; the gap between what programs and humans understand is large.
<br />presentation vs. semantics
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<br />Figure 1: On the left, what browsers see. On the right, what humans see. Can we bridge the gap so that browsers see more of what we see?
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<br />What if the browser, or any machine consumer such as a Web crawler, received information on the meaning of a web page's visual elements? A dinner party announced on a blog could be copied to the user's calendar, an author's complete contact information to the user's address book. Users could automatically recall previously browsed articles according to categorization labels (i.e., tags). A photo copied and pasted from a web site to a school report would carry with it a link back to the photographer, giving him proper credit. A link shared by a user to his social network contacts would automatically carry additional data pulled from the original web page: a thumbnail, an author, and a specific title. When web data meant for humans is augmented with hints meant for computer programs, these programs become significantly more helpful, because they begin to understand the data's structure.
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<br />RDFa allows HTML authors to do just that. Using a few simple HTML attributes, authors can mark up human-readable data with machine-readable indicators for browsers and other programs to interpret. A web page can include markup for items as simple as the title of an article, or as complex as a user's complete social network. -
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Rachel CThe lifeblood of Web 2.0 is in liberal use, reuse, repurposing, and combining of information streams. For this to work on the scale of the Web, there has to be a mechanism to accelerate the exchange and matching of agreements, and there has to be enough m
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27 Dec 07
viniciusjlRDFa lets XHTML authors express this structured data using existing XHTML attributes and a handful of new ones. Where data, such as a photo caption, is already present on the page for human readers, the author need not repeat it for automated processes to
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27 Aug 07
Pru MitchellPanel presentations including metadata handbook, NEALS, e-standards, GLOBE, ICE, PILIN, ARROW, LORN, RUBRIC, MAMS
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15 Jun 06
Nick GallThe key RDFa "spec".
via_delicious_20101217 ImportedFurl20071006 SemanticWeb rdf pinboardimport20141106
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