[Nepomuk] Nepomuk and lyrics stuff

[phreedom at yandex.ru]

On Среда 20 марта 2013 16:06:39 Ignacio Serantes wrote:
> Extracted from ontology documentation:
> 
> Plain-text representation of the content of a InformationElement with all
> markup removed. The main purpose of this property is full-text indexing and
> search. Its exact content is considered application-specific. The user can
> make no assumptions about what is and what is not contained within.
> *Applications
> should use more specific properties wherever possible*.

*wherever possible*. The rationale for not adding a specific property like 
nmm:lyrics was that such a property might be underspecified and effectively 
useless. Also, this would mean lots of content types would get their own 
"nicely named plain-text version of the data without any strict serialization 
requirements" properties without any useful result either.

To put "The user can make no assumptions about what is and what is not 
contained within" into musical context: typical data ripped off a lyrics site 
might contain lyrics only, or lyrics prepended with band, title or who knows 
what else, format can be quite "flexible" too, even worse if you use several 
lyrics sources.

So, the user who knows what nmm:MusicPiece is, also knows that you can get a 
somewhat useful, but not machine-readable text dump in nie:plainTextContent 
which is likely to also contain lyrics, and that's exactly what you get from a 
typical lyrics site.

Properly implemented lyrics needs a rather clean feed and who knows maybe it 
shouldn't even be implemented as a single text property. Maybe a subtitle-like 
approach "time-stamped text" is a better idea?

Or, maybe I missed some important development and there's a very good 
authoritative lyrics DB with a predictable format and we should get started on 
defining nmm:lyrics? I don't monitor this actively...

> When documentation informs you that other ontologies should be used I have
> doubts.
> 
> On Wed, Mar 20, 2013 at 2:54 PM, <phreedom at yandex.ru> wrote:
> > On Вторник 19 марта 2013 20:22:14 Ignacio Serantes wrote:
> > > Hi list,
> > > 
> > > As a first step to add music lyrics to Nepomuk I will add support
> > > for
> > > lyrics frames in audio files in taglibextractor and this data will
> > > be
> > > stored in
> > > nie:plainTextContent<
> > 
> > http://www.semanticdesktop.org/ontologies/nie/#plainTe
> > 
> > > xtContent> because there is no better place to store this
> > > information.
> > 
> > This is the proper place to store lyrics.