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Re: [Freebase-experts] ISBNs, owl:sameAs, etc

From: Ross Singer <rossfsinger@gmail.com>
Date: Mon, 4 Jan 2010 22:15:46 -0500
Message-ID: <23b83f161001041915w3001d8afi75ca35b343e44189@mail.gmail.com>
To: martin.hepp@ebusiness-unibw.org
Cc: Kingsley Idehen <kidehen@openlinksw.com>, "Daniel O'Connor" <daniel.oconnor@gmail.com>, Freebase Experts <freebase-experts@freebase.com>, public-lod@w3.org
Martin,

Given that there's apparently considerable disagreement here (and
probably plenty of confusion), can you elaborate on what exactly you
object to in this request?

The first objection I saw raised was by Tom Morris ("is a FreeBase
topic really a book?") and agree that urn:isbn:9780670063260 is not
the same thing as http://rdf.freebase.com/ns/en.on_the_road.

However, I'm not sure I see that distinction between
urn:isbn:9780670063260 and
http://rdf.freebase.com/ns/soft.isbn.9780670063260.best as they're
both trying to identify an edition (or, loosely, a frbr:Manifestation)
of a work.

My questions would be:
1) If the latter relationship is not a good fit for owl:sameAs, why?
2) if #1 is true, what is a better alternative?

I understand the rationale of not wanting to water down the semantics
of owl:sameAs to the point that it's little more than rdfs:seeAlso
with louder voice.  At the same time, it's difficult to see if your
issue is with a type mismatch between a URN and a URI; how FreeBase
models their data; or general "mutually assured destruction"-ness of
owl:sameAs.

Thanks,
-Ross.

On Mon, Jan 4, 2010 at 4:22 PM, Martin Hepp (UniBW)
<martin.hepp@ebusiness-unibw.org> wrote:
> dear all:
> quite clearly, a book title is not the same as a book, and if the linked
> data community continues to link apples and oranges via owl:sameAs then
> either
>
> - the socially agreed meaning owl:sameAs is being degraded to untyped href
> in HTML
> or
> -  vast amount of data in the linked data cloud turns useless
>
> but as a minimum precaution against spoiling the graph of data, put your
> sameAs statements into separate graphs so that meaningful applications can
> filter them out easily.
>
> best
>
> martin
>
> Kingsley Idehen wrote:
>>
>> Daniel O'Connor wrote:
>>>
>>>
>>> On Tue, Dec 29, 2009 at 6:02 PM, Tom Morris <tfmorris@gmail.com
>>> <mailto:tfmorris@gmail.com>> wrote:
>>>
>>>    But is the description of the book (ie Freebase topic) really the same
>>>    thing as the book?
>>>
>>>    Assuming it was, wouldn't you not only have to make the sameAs
>>>    assertions and publish them someplace, but also get them loaded into
>>>    sameas.org <http://sameas.org>?
>>>
>>>    Tom
>>>
>>>    On Tue, Dec 29, 2009 at 1:35 AM, Shawn Simister
>>>    <narphorium@gmail.com <mailto:narphorium@gmail.com>> wrote:
>>>    > Are you just looking for a script that can make the 'same as'
>>>    assertions
>>>    > like this?
>>>    >
>>>    > http://rdfbooks.freebaseapps.com/ns/soft.isbn.9780670063260.best
>>>    >
>>>
>>>
>>> Ah hah!
>>>
>>> Now how to (nicely) get that indexed...
>>
>> Make a linkset and publish it via:
>>
>> 1. A data dump
>> 2. SPARQL endpoint
>> 3. Your Linked Data Space .
>>
>> Then you have your index, and others can make their variants by meshing
>> their data with yours :-)
>>
>> Re. DBpedia, we can add the linkset to its own Named Graph as we've done
>> with other linksets.
>>
>
> --
> --------------------------------------------------------------
> martin hepp
> e-business & web science research group
> universitaet der bundeswehr muenchen
>
> e-mail:  hepp@ebusiness-unibw.org
> phone:   +49-(0)89-6004-4217
> fax:     +49-(0)89-6004-4620
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>        http://www.heppnetz.de/ (personal)
> skype:   mfhepp twitter: mfhepp
>
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> =================================================================
>
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>
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Received on Tuesday, 5 January 2010 03:16:20 UTC

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