Introduction to ccREL

Hal Abelson
Ben Adida
Mike Linksvayer
Nathan R. Yergler, Creative Commons

3

CC License Deed
CC License Legal Code

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
         xmlns="http://www.w3.org/1999/xhtml/vocab#">
    <rdf:Description rdf:about="http://www.lessig.org/blog/">
        <license rdf:resource="http://creativecommons.org/licenses/by/3.0/" />
    </rdf:Description>
</rdf:RDF>

Why Machines?

Programs should be able to answer simple questions about licensed works.



Previous Recommendation




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Pervasive Problems

CC Rights Expression Language

"Compared to the previous recommendation, ccREL is intended
to be both easier for content creators and publishers to provide,
and more convenient for user communities and tool builders
to consume, extend, and redistribute."

Work Properties

License Properties

Work Properties

License Properties

Principles for Publishing ccREL in HTML

RDFa

So much data on the web.... [Social Network]

So much data on the web.... [Craigslist]

So much data on the web.... [Flickr]

So much data on the web.... [CC Tech Summit Program]

Chasm Between Human and Data Webs

2 published documents, 2 document types

Chasm Between Human and Data Webs

A significant gap between what browsers see and what humans see

Visual Correspondence

Visual Correspondence

Don't Repeat Yourself

Change the visual, change the machine-readable



distributed under a 
<a href="http://creativecommons.org/licenses/by/3.0/">CC License</a>



To:

distributed under a 
<a href="http://creativecommons.org/licenses/by-nc/3.0/">CC License</a>


The Machine Readers should Follow

Remix Friendliness

Remix Friendliness

Extensibility & Modularity

The Flickr Photostream

Extensibility & Modularity

Flickr used by a Newsreader

Extensibility & Modularity

Flickr used by a Digital Photo Frame

Extensibility & Modularity

Flickr used by an Asset Management Program

Extensibility & Modularity for CC Apps

Extensibility & Modularity for CC Apps

Extensibility & Modularity for CC Apps


A Link with Flavor

distributed under a
<a href="http://creativecommons.org/licenses/by/3.0/">
    Creative Commons License
</a>

A Link with Flavor

distributed under a
<a rel="license" href="http://creativecommons.org/licenses/by/3.0/">
    Creative Commons License
</a>

Text with Flavor

<h2>The Trouble with Bob</h2>
<h3>Alice</h3>

Text with Flavor

<h2 property="dc:title">The Trouble with Bob</h2>
<h3 property="dc:creator">Alice</h3>
<div xmlns:dc="http://purl.org/dc/elements/1.1/">
    ....
</div>

Text with Flavor

<div xmlns:dc="http://purl.org/dc/elements/1.1/">
    <h2 property="dc:title">The Trouble with Bob</h2>
    <h3 property="dc:creator">Alice</h3>
</div>

A Few Articles

<div ...>
    <h2 property="dc:title">The Trouble with Bob</h2>
    <h3 property="dc:creator">Alice</h3>
</div>

...

<div ...>
    <h2 property="dc:title">Jo's Barbecue</h2>
    <h3 property="dc:creator">Eve</h3>
</div>

A Few Articles

<div about="/alice/posts/trouble_with_bob"...>
    <h2 property="dc:title">The Trouble with Bob</h2>
    <h3 property="dc:creator">Alice</h3>
</div>

...

<div about="/alice/posts/jos_barbecue"...>
    <h2 property="dc:title">Jo's Barbecue</h2>
    <h3 property="dc:creator">Eve</h3>
</div>

A Few Articles

 

Image within an Article

<div about="/alice/posts/trouble_with_bob"...>
    <h2 property="dc:title">The Trouble with Bob</h2>
    <h3 property="dc:creator">Alice</h3>
</div>

Image within an Article

<div about="/alice/posts/trouble_with_bob"...>
    <h2 property="dc:title">The Trouble with Bob</h2>
    <h3 property="dc:creator">Alice</h3>

    <p>The trouble with Bob is that he takes
    much better photos than I do:</p>

    <div>
        <img src="/bob/photos/sunset.jpg" />
        <span>Beautiful Sunset</span>
        by <a href="/bob/">Bob</a>
    </div>
</div>

Image within an Article

<div about="/alice/posts/trouble_with_bob"...>
    <h2 property="dc:title">The Trouble with Bob</h2>
    <h3 property="dc:creator">Alice</h3>
    
    <p>The trouble with Bob is that he takes
    much better photos than I do:</p>
    
    <div about="/bob/photos/sunset.jpg">
        <img src="/bob/photos/sunset.jpg" />
        <span property="dc:title">Beautiful Sunset</span>
        by <a rel="dc:creator" href="/bob/">Bob</a>
    </div>
</div>

Image within an Article

Conclusion




Questions: http://wiki.creativecommons.org/TechSummit