Re: Course, a new dawn?

+1

A property with a name of courseInstance and a range of CourseInstace is a
pattern that is not encouraged, yet is not unknown in Schema.  So, unless
someone comes up with a killer alternative property name, it is probably
acceptable.

Might need a few extra course/instance specific properties, but as long as
they don’t blur the simple entity & relationship we have here I give this a
+1

~Richard.

Richard Wallis
Founder, Data Liberate
http://dataliberate.com
Linkedin: http://www.linkedin.com/in/richardwallis
Twitter: @rjw

On 29 February 2016 at 17:12, Phil Barker <phil.barker@hw.ac.uk> wrote:

> There is a mock up of Vicki's proposal (as I understand it) at
> http://course.schema-course-extend-vthprop.appspot.com/Course
> http://course.schema-course-extend-vthprop.appspot.com/CourseInstance
>
> If you scroll right down to the bottom there are a couple of examples as
> Google testing tool output (more or less human readable) and RDFa.
>
> Are we happy to proceed with this as a general approach?
>
> Phil
>
>
> On 25/02/2016 18:23, Vicki Tardif Holland wrote:
>
> I am concerned that in the name of simplicity, we are losing the ability
> to understand the various things a Course may be:
>
> 1. The abstract notion (e.g. "HNC Accounting").
> 2. A specific session of the Course (e.g. HNC Accounting taught at St
> Brycedale Campus Kirkcaldy starting 2016-08-29).
> 3. An offer to sell access to a Course. In the online world, this is
> usually a specific session.
>
> As the examples are written, I cannot tell the difference between
> definitions 1) and 2), particularly because the first example gives dates.
>
> I think we need to move back to a model where there is:
>
> 1. Course which is a subtype of CreativeWork
> 2. CourseOffering (or CourseSession if Offering is too close to Offer)
>  which is a subtype of Event
> 3. Use the "offers" property on CreativeWork and Event to allow someone to
> specify an Offer to sell access to a Course or CourseSession as appropriate.
>
> - Vicki
>
> Vicki Tardif Holland | Ontologist |  <vtardif@google.com>
> vtardif@google.com
>
>
> On Thu, Feb 25, 2016 at 12:47 PM, Phil Barker <phil.barker@hw.ac.uk>
> wrote:
>
>>
>> Well, that got complicated & confusing.
>>
>> Richard and I had a chat this afternoon, he suggested we try something
>> different. Briefly, it is to try a new starting point (and I hope I have
>> interpreted correctly):
>>
>> Do not have separate types for Course and CourseOffering.
>>
>> Define Course as a subtype of both Creative Work and Event, which can be
>> used for both the abstract description and the concrete instances.
>>
>> Define a coursePresentation property of Course to relate the concrete
>> instances to the abstract description when necessary. (I guess and inverse
>> property might useful).
>>
>> When describing a concrete instance of a course, declare it to be both a
>> Course and an Offer. This allows the use of price, offeredBy, ApplyAction
>> and so on.
>>
>> There is an mock-up of this at
>> http://course.schema-course-extend-rjwprop.appspot.com/Course If you
>> scroll right down to the bottom there are a couple of examples as Google
>> testing tool output (more or less human readable) and RDFa.
>>
>> Any comments on this as a general approach? Does it make enough of a
>> distinction between a Course and its Sections/Presentations/Offerings for
>> it to be clear to people who care about such a distinction?
>>
>> Don't worry too much about details of the properties that are currently
>> in the mock-up, that could lead more rabbit holes prematurely.
>>
>> Phil
>>
>> --
>> --
>> Phil Barker           @philbarker
>> LRMI, Cetis, ICBL     http://people.pjjk.net/phil
>> Heriot-Watt University
>>
>> Ubuntu: http://xkcd.com/456/
>>   not so much an operating system as a learning opportunity.
>>
>>
>>
>
> --
> Phil Barker           @philbarker
> LRMI, Cetis, ICBL     http://people.pjjk.net/phil
>
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