- From: Thad Guidry <thadguidry@gmail.com>
- Date: Thu, 19 Sep 2013 13:05:06 -0500
- To: Aaron Bradley <aaranged@gmail.com>
- Cc: Niklas Lindström <lindstream@gmail.com>, "Wallis,Richard" <Richard.Wallis@oclc.org>, "public-vocabs@w3.org" <public-vocabs@w3.org>
- Message-ID: <CAChbWaMmc18_RB3V4=2PawU1G5TVqoXBetN-b60cFXOmzuzhwQ@mail.gmail.com>
Right, More specific Types will and are needed in Schema.org, no question. The question is that of reuse and using a top down approach (rather than bottom up). I am trying to teach many of us on here, of thinking GENERICALLY to allow a natural reuse to happen and evolve. To that end, I would rather see a higher type evolve from this discussion, where I do not know WHAT that higher type is yet. But know that it is definitely, a http://schema.org/Product : CreativeWork -> Book -> bookFormat -> AudioBook (a new BookFormatType) http://schema.org/BookFormatType -> AudioBook Other ideas (from a bottom up approach): AudioBook <- Recording AudioBook <- Book etc... On Thu, Sep 19, 2013 at 12:32 PM, Aaron Bradley <aaranged@gmail.com> wrote: > Thad, I see your point about MediaObject which would, for example, allow > one to declare properties about the *recording* made of a Book (or of > another CreativeWork), such as "publisher" or "copyrightDate". This would > only work, though, if the recording was itself a property ("encoding") of > the CreativeWork encoded - that is, if the AudioBook item was not available. > > However, I think an audio book is a discreet enough entity that it is > useful to classify it as a separate type, with some properties that are > unique to it in comparison to other CreativeWork propeties (even if only > "performer") - so it does leave me wanting, yes. A recorded song is "just" > an audio recording of a CreativeWork, but nonetheless we have > MusicRecording. And an audio book (or, especially, audio performance) need > not be derivative of another creative work, but may be an original creative > work in its own right, like other more specific types of creative works > like Movie or TVSeries. So, for example, under the existing schemas, an > original BBC radio drama could only be marked up as CreativeWork, with > certain properties accessible via "encoding", but without access to > obviously relevant properties like "director", "actor" and "startDate" that > fall under TVSeries (audio books, at least theoretically share these same > properties). > > Perhaps in the interest of reuse, and so that we're not iteratively > building out more an more specific types, the world could live without > "AudioBook" and/or an equivalent for an audio dramatization. I'd say > there's value in a new type or type here. > > I confess that only after writing the above did I encounter the > additions/modifications to TV and radio part of schema.org proposed by > Yves Raimond and Jean-Pierre Evain [1] which would indeed rework > CreativeWork to accomodate things like RadioSeries - which at least shows > that others see the utility of a separate type for audio dramatizations > (though which I wouldn't frame as "radio" as its quite possible to deliver > audio through another mechanism, just as "TVSeries" is - somewhat along the > lines of Thad's thinking - is an increasingly anachronistic framing of a > CreativeWork by its delivery mechanism. Netflix's "House of Cards" is > undoubtedly a TVSeries, even though it has never been broadcast on a > television network nor requires a television to watch it ... so perhaps > that's not problematic.) > > Niklas, to the broader point you make about derivative works, I LOVE the > idea of an "isBasedOn" property for creative works. > > In the context of an AudioBook (were that type to be introduced) it would > immediately solve the ambiguity of things like "copyrightDate": the value > of copyrightDate for the item AudioBook would be for the recording, with > the property isBasedOn allowing for properties about the Book on which it > is based to be declared - including the copyrightDate of the book. > > More generally, I think isBasedOn is both an elegant and useful way of > providing information about the relationship between creative works. A > Movie may be based on a Book or a Book on Movie, for example; there's > schemas for these, of course, but no way of connecting the items. > > [1] http://www.w3.org/wiki/WebSchemas/TVRadioSchema > > > > On Thu, Sep 19, 2013 at 8:20 AM, Niklas Lindström <lindstream@gmail.com>wrote: > >> Hi Aaron, >> >> On Thu, Sep 19, 2013 at 4:47 PM, Aaron Bradley <aaranged@gmail.com>wrote: >> >>> I think this is a type whose time has come. >>> >>> I wonder, though, whether an "Audiobook" type should encompass - or at >>> least try to account for - audio dramas. That is a dramatization rather >>> than a reading of a book, or an original audio drama, such as one commonly >>> encounters on public radio broadcasters like the BBC. >>> >> >> Perhaps though, the dramatization would be considered as another kind of >> creative work? Of course, more to the point, would such a distinction be >> important for users in general? (If I look for an audiobook, would I be >> surprised by an audio drama?) >> >> Really the only property that would need to be re-examined in this light >>> is "readBy", because of the difference between a "reading" and a >>> "performance." >>> >>> For both audio books and audio dramas, the existing property performer >>> [1] seems well-suited to the task. And even looking just at the type >>> "AudioBook" it seems that "readBy" is an unnecessarily more specific >>> version of "performer" (for example, there is no "actor" property for >>> TheatreEvent [2]). >>> >> >> This sounds reasonable. The type should determine its specific contextual >> meaning readily enough. >> >> >>> Looking at the example I also wonder about the use of "datePublished", >>> "publisher", "copyrightYear" and "copyrightHolder" in this context. In the >>> World War Z example the values for the these properties reference the >>> published book on which the audiobook is based. To indicate year of >>> recording and recording copyright (which is typically an additional >>> copyright - i.e. a copyright on the performance), would one declare >>> additional instances of these properties, or is the addition of a property >>> or properties required? >>> >>> In the former case, of course, data consumers would not be able to >>> distinguish between date of publication and date of recording which would >>> be an issue. And I think that providing the recording date in a structured >>> format is at least as important (and arguably more important n the context >>> of the type "Audiobook") as the book publication date. Without that the >>> data encoded for a reading of "Moby Dick," for example, would only indicate >>> that the book was published in 1851, and not that it was recorded in 2013. >>> >>> Thinking out loud, all of this could be handled if the property values >>> for "AudioBook" all pertained to the recording, rather than the book, and a >>> property "isBasedOnBook" (like isBasedOnUrl [3]) with expected type "Book" >>> could be used to mark up all the properties related to the book on which >>> the recording is based. >>> >> >> I definitely think that an "isBasedOn" property – with a range of >> CreativeWork – could be a useful addition! (It would be rather like >> dc:source or prov:wasDerivedFrom in meaning). >> >> In the SchemaBibEx group, we've been discussing similar properties >> (exampleOfWork, isVersionOf, editionOf etc.) in relation to levels of >> abstractions or generalizations as well (for that difference, compare the >> FRBR exclusive abstraction levels with the >> ProductModel/Product/IndividualProduct levels of specificity). I think >> "isBasedOn" could be a valuable start. (Also in relation to the suggested >> "adaptationOf", figuring in the accessibility topic recently discussed >> here.) >> >> Especially since, in comparison, the "isBasedOnUrl" property is very >> strange from a linked data perspective (with its range of URL instead of >> CreativeWork). >> >> Cheers, >> Niklas >> >> >> >>> >>> [1] http://schema.org/performer >>> [2] http://schema.org/TheaterEvent >>> [3] http://schema.org/isBasedOnUrl >>> >>> >>> >>> On Thu, Sep 19, 2013 at 4:30 AM, Wallis,Richard <Richard.Wallis@oclc.org >>> > wrote: >>> >>>> This is a proposal from the Schema Bib Extend Group<http://www.w3.org/community/schemabibex/>, >>>> consisting of 80+ people from a broad cross section of publishers, >>>> libraries, and others interested in enhancing Schema.org's >>>> capabilities in the area of bibliographic and associated resources. >>>> >>>> Proposal: >>>> To create a new Type: 'Audiobook' >>>> >>>> An audiobook is sufficiently different to other book types to warrant >>>> the proposal for another type. >>>> >>>> The proposal is that Audiobook is a sub-type of *both* Book<http://schema.org/Book> >>>> and AudioObject <http://schema.org/AudioObject>. I am not sure if I >>>> have seen a Type in Schema that has more than one super-type before, so I >>>> am wondering if this is a valid approach. >>>> >>>> Detailed proposal posted on the WebSchemas wiki: Audiobook<http://www.w3.org/wiki/WebSchemas/Audiobook> >>>> >>>> >>>> Richard Wallis >>>> Technology Evangelist, OCLC >>>> richard.wallis@oclc.org >>>> >>>> >>>> >>>> >>> >> > -- -Thad Thad on Freebase.com <http://www.freebase.com/view/en/thad_guidry> Thad on LinkedIn <http://www.linkedin.com/in/thadguidry/>
Received on Thursday, 19 September 2013 18:05:34 UTC