Hi Basil,
This is quite interesting. It seems like a nice way to take advantage of
SMW's built-in querying and data-display system, and if it works out well,
maybe it could be expanded to handle, say, SPARQL queries as well. (I'm sure
you've that of that one already.) One quibble is I have is with the name of
the extension, which I believe is "FreebaseIntegration". Leaving aside the
CamelCase aspect of it (I prefer having spaces between words), I don't know
if the word "integration" applies here. To me, integration means that you
can use more than one set of data together, running queries that combine
data from Freebase and the local wiki, for instance. That doesn't seem to be
the case here - you can display data from Freebase, but you can't use it in
conjunction with SMW data or anything else. I believe that's the case too
with the Sparqling extension, and it's an unfortunate limitation... though I
can't think of any way around it. Or is this something you're thinking about
adding?
Also, one minor point: the Semantic Google Maps extension you're using on
the test wiki has already been replaced, by Maps and Semantic Maps.
-Yaron
On Thu, Aug 13, 2009 at 6:43 AM, Basil Ell <[email protected]> wrote:
> Hi,
>
> first let me briefly introduce myself: My name is Basil Ell and I am
> currently working for my master thesis at AIFB Karlsruhe - supervised by
> Denny Vrandecic.
>
> As a part of my work I created an extension to be used together with SMW
> that let's you query freebase [1] using conventional askQL queries. Querying
> freebase is easily achieved by simply adding the parameter source=freebase:
>
> {{#ask: [[Category:City]] [[located in::Germany]]
> | ?population
> | source=freebase
> }}
>
> Or you can even query for cities and their population in 독일 (Dogil), the
> Korean name of Germany:
>
> {{#ask: [[Category:City]] [[located in::독일]]
> | ?population
> | source=freebase
> | language=/lang/ko
> }}
>
>
> I strive in making data integration as easy as possible. The main idea is,
> that the information necessary for mapping between askQL and MQL is
> separated from the integration statement - the askQL query. Therefore this
> information is stored on pages in main namespace, category namespace, and
> property namespace. Users that are experienced with freebase can add mapping
> information to an SMW and all users benefit from the increasing mapping
> possibilities.
>
> For the example above the page Category:City stores that this category maps
> to "/location/citytown", the page Property:located in stores that this
> property maps to "/location/location/containedby" and the page
> Property:Population stores that this print request maps to
> "/location/statistical_region/population;number" and is of numerical type.
>
> I set up a demo wiki [2] where you find documentation and examples, observe
> the current state of my work in progress, and experience current
> possibilities and limitations.
>
> A blog [3] is available where I plan to report on further development and
> releases.
>
> I am looking forward to your opinions.
> Best regards,
>
> Basil
>
> [1] http://www.freebase.com/
> [2]
> http://basil-ell.de/mediawiki/mediawiki-1.15.0/index.php5?title=Main_Page
> [3] http://www.basil-ell.de/data_integration/
>
>
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