Re: Raising the issue of collections, especially of learning resources, within schema.org

Copying Schemabibex list for information.

Steve,

My reaction is that an OrderedCollection should be a sub-type of Collection.

The question then comes to how you represent the ordering.   RDF gives us ref:first, rdf:rest, ref:nil, but I can't see how these would easily map into the schema.org<http://schema.org> world.

We could have first & last as properties for OrderedCollection, the challenge would be ordering the ones in-between.

Any suggestions?


~Richard

On 9 Sep 2013, at 17:22, Steve Midgley <steve.midgley@mixrun.com<mailto:steve.midgley@mixrun.com>> wrote:

Great topic.

If we take on collections, I feel like I'd want them to let me express "ordered relations" similar to what Jason was talking about with the JSON-LD question recently.

For example, not only do I want a simple collection of LRMI resources, but I'd like to be able to express the collection in some type of order. So I can have all the units of instruction in a specified order (each unit might be an LRMI resource)..

But it opens up a rabbit hole of complexity (does it support multiple branches of collections? what about named branches - one for "advanced" one for "more explanation"? Does it support nested collections, so "Course" has a bunch of units, each unit is a collection of resources, etc?)

Steve


On Fri, Sep 6, 2013 at 1:49 AM, Phil Barker <phil.barker@hw.ac.uk<mailto:phil.barker@hw.ac.uk>> wrote:

Hello Charles, hello all,
I mostly agree with subject line: we should be raising the issue of collections, it is not something special to learning resources, but perhaps we have special cases relevant to education that should be raised.

There was a proposal from schema bibliography group http://www.w3.org/community/schemabibex/ for collections http://www.w3.org/wiki/WebSchemas/Collection discussed on the public schemas list over the summer -- the latter part of the discussion is toward the end of this page http://lists.w3.org/Archives/Public/public-vocabs/2013Jul/thread.html

cc-ing Richard Wallis who may know where that proposal stands?

Furthermore....
I think there is a similar issue around events that comes up when we discuss courses. A lecture course is a series of educational events and it would be nice to be able to say so, but (I think) schema.org<http://schema.org/> only knows about TV series. Put the two together and a "course" in a more general educational sense is a series or structured collection of educational events and/or creative works. If an educational course is a type of collection then collection has a wider domain than creative works.

Phil


On 06/09/2013 05:08, Charles Myers wrote:
The Accessibility metadata thread on the W3C public vocabs list has heated up lately.  You can see this at http://lists.w3.org/Archives/Public/public-vocabs/2013Sep/ although my responses are currently blocked at the W3C, as I just started on the lists. You can also see the thread on the accessibility metadata google group at http://www.a11ymetadata.org/discuss/

While I was writing one of my emails on a hot thread today, I was reminded of a longstanding schema.org<http://schema.org/> issue that I wanted to bring up to the LRMI group. Every LRMI workshop I've been to has a box of books as a package. See http://www.mcgraw-hill.co.uk/sra/rl_index.html for a good example. But the lament has always been that there is no such mechanism in schema.org<http://schema.org/> for having a collection.

Well, that's wrong.  There is one.  It's http://schema.org/CollectionPage , but is expected to be a collection of web pages and exclsuive to that.  In fact, the way that it works is that WebPage has a property isPartOf, which then points to the collection page.

I believe that LRMI should consider bringing the concept of the collection and abstracting this to be a collection of any creative works, whether book, web page, app or video, to schema.org<http://schema.org/>.  It's not a specific LRMI issue, but it comes up commonly in LRMI content.

Also, do take a look in at the debate going on the public vocabs list. This is the first significant dialog we've had with the entire schema.org<http://schema.org/> group, and your insights can help us get the best quality specification adopted, and then work on getting it applied to learning resources.
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