[Nepomuk] OSCAF and music live and videoclips

[Andrew Lake]

Yup, double typing is exactly what I had in mind. It cuts down on a
proliferation of new classes and more simply reflects what actually
happens in the real world - resources on the users computer can be of
multiple types (rdf:type has no maxCardinality that I can recall).
Applications already have to deal with this possibility.

The query would be simple:
1. If the user wants live performances of any type then use:
    ?r rdf:type nmm:LivePerformance
2. If the user wants TV show live performances use:
    ?r rdf:type nmm:LivePerformance
    ?r rdf:type nmm:TVShow
3. If the user wants Music Video live performances use:
    ?r rdf:type nmm:LivePerformance
    ?r rdf:type nmm:MusicVideo
4. If the user wants Music live performances use:
    ?r rdf:type nmm:LivePerformance
    ?r rdf:type nmm:MusicPiece
5. if the user wants a concert of any type use:
    ?r rdf:type nmm:Concert
6. if the user wants a concert movie use:
    ?r rdf:type nmm:Concert
    ?r rdf:type nmm:Movie
7. if the user wants a concert TV show use:
    ?r rdf:type nmm:Concert
    ?r rdf:type nmm:TVShow

Even better, if nfo:Media is ever expanded to include new types such
as (Books, AudioBooks, Plays, Spoken Word, etc.) this live performance
ontology wouldn't need to be updated again.
I really think we can get all the benefits we need without introducing
media-specific live performance types.

Hope this helps,
Andrew

On Wed, Apr 4, 2012 at 10:49 AM, Sebastian Trüg <sebastian at trueg.de> wrote:
> looks very nice indeed. Would you thus propose to double-type live
> performance videos with nmm:MusicVideo and nmm:LivePerformance?
>
> How about the attached layout instead.
>
> We simply derive the live video and audio from the same live base class.
> That way we can easily query all live performances, be it audio or video.
> Also I added an intermediate class nmm:MusicVideo and the badly named
> nmm:MusicVideoVideo which is supposed to be typical music videos as you
> get from performers for mtv and stuff.
> That way we can also easily query for videos that contain music in any form.
>
> What do you think?
>
> Cheers,
> Sebastian
>
> On 04/04/2012 07:26 PM, Andrew Lake wrote:
>> nmm:TVShow is a subclass of nfo:Media so yes, it should be okay to do that. :-)
>>
>> peace and much respect,
>> Andrew
>>
>> On Wed, Apr 4, 2012 at 10:23 AM, Ignacio Serantes <kde at aynoa.net> wrote:
>>> Assuming that nmm:TVShow could be used instead nfo:Media seems good for me
>>> :).
>>>
>>>
>>> On Wed, Apr 4, 2012 at 6:36 PM, Andrew Lake <jamboarder at gmail.com> wrote:
>>>>
>>>> Thanks for taking the time to put this together Sebastian.
>>>>
>>>> I wonder if it would be possible to push a simpler class
>>>> nmm:LivePerformance up above the media type (audio/music/video).
>>>> Perhaps just subclassed from nfo:Media, since we could have audio or
>>>> video live performances.  Then perhaps we could just add the type to
>>>> any existing audio, music, video, tv show, etc. resource to indicate
>>>> it is a live performance.  A concert then is just a special type of
>>>> live performance that can have multiple live performances. It might
>>>> even have unique properties like location, numberOfPerformers,
>>>> tourStops, etc.
>>>>
>>>> Based on what you came up with and Ignacio's comments, I've attached a
>>>> png that captures what I'm thinking might work.
>>>>
>>>> Hope this helps,
>>>> Andrew
>>>>
>>>> On Wed, Apr 4, 2012 at 4:41 AM, Ignacio Serantes <kde at aynoa.net> wrote:
>>>>> In a second view I have some remarks:
>>>>>
>>>>> Why nmm:MusicVideo is related to nmm:LiveMusicPerformance? There are
>>>>> totally
>>>>> independent without any relation.
>>>>> nmm:MusicVideo must be related to many nmm:MusicPiece as
>>>>> nmm:LiveMusicPerformance. This is a very uncommon case but there is a
>>>>> few
>>>>> music video clips related to more than on song.
>>>>> I'm assuming a 0:n cardinality because I have several live performances
>>>>> related to a nmm:MusicPiece I don't own.
>>>>>
>>>>>
>>>>>
>>>>> On Wed, Apr 4, 2012 at 10:40 AM, Sebastian Trüg <sebastian at trueg.de>
>>>>> wrote:
>>>>>>
>>>>>> Hi guys,
>>>>>>
>>>>>> I quickly drew little diagrams trying to summarize again. Please tell
>>>>>> me
>>>>>> what I missed:
>>>>>>
>>>>>> 1.png is the example of a concert which is split into live performances
>>>>>> or certain music pieces. Still missing are the DataObject parts. There
>>>>>> could be a filedataobject for all of them or only for the concert. in
>>>>>> the latter case the rest would be embedded data objects or we need
>>>>>> something new like "part of a dataobject".
>>>>>> 2.png is the relationship between the classes.
>>>>>>
>>>>>> Cheers,
>>>>>> Sebastian
>>>
>>>
>>>
>>>
>>> --
>>> Best wishes,
>>> Ignacio
>>>
>>>
>>