W3C home > Mailing lists > Public > public-lod@w3.org > August 2008

Re: Visualizing LOD Linkage

From: Kingsley Idehen <kidehen@openlinksw.com>
Date: Sat, 02 Aug 2008 12:17:31 -0400
Message-ID: <4894889B.9050008@openlinksw.com>
To: Yves Raimond <yves.raimond@gmail.com>
CC: public-lod@w3.org

Yves Raimond wrote:
> Hello!
>
>   
>> I would like to suggest that publishers of new linked data spaces that plug
>> into the growing LOD include the following:
>>
>> 1. cross-link information
>>     
>
> I would also suggest we find a better measure for interlinkage than a
> raw number of triples linking one dataset to another.
> For example, http://dbtune.org/musicbrainz/ creates its own identifier
> for languages (http://dbtune.org/musicbrainz/directory/language),
> which are owl:sameAs'ed to the corresponding languages in Lingvoj when
> applicable, whereas linkedmdb directly links to the Lingvoj
> identifiers. In the latter case, the raw number of interlinks will be
> higher, but could be reduced a lot by creating identifiers for
> language and use sameAs.
>
> The same applies for geographic locations, for example. Some datasets
> use foaf:based_near to link to Geonames, some others create their own
> identifiers, and then link to the corresponding Geonames locations
> through owl:sameAs. For the same dataset, this two methodologies will
> lead to completely different numbers.
>
> To boost the statistics of a dataset, we could simply link each person
> or group in them to http://dbpedia.org/class/yago/Entity100001740
> through rdf:type :-D
>   

Amen!

And it also means we start to expose the fact that LOD is not an 
"instance level only" linked data space (a sad misconception).

> So I think we should agree on what we count as "interlinks" before
> publishing such statistics, so that we can actually use these values?
>   
We should basically express linkages across instance and schema/data 
dictionary vectors. This also helps those looking to build LOD applications.

Of course there is more to come re. the injection of "data dictionary / 
schema" linkage aspects of LOD, but no harm in getting our thoughts in 
order re. "best practices" for the growing cloud :-)
> My recommendation would be to always go for the lowest value - the one
> you'd obtain by creating your own identifiers and using owl:sameAs
> (which would be equivalent to the number of distinct external URIs
> mentioned in your dataset).
>
> What do you think?
>   
Good Idea, so share you page as a nice example :-)


Kingsley
> Cheers!
> y
>
>
>   
>> 2. cross-link visual derived from the LOD cloud diagram.
>>
>> The Linked Movies Database has nice examples of both [1].
>>
>> Links:
>>
>> 1. http://www.linkedmdb.org:8080/Main/Interlinking
>>
>> --
>>
>>
>> Regards,
>>
>> Kingsley Idehen       Weblog: http://www.openlinksw.com/blog/~kidehen
>> President & CEO OpenLink Software     Web: http://www.openlinksw.com
>>
>>
>>
>>
>>
>>
>>     
>
>   


-- 


Regards,

Kingsley Idehen	      Weblog: http://www.openlinksw.com/blog/~kidehen
President & CEO 
OpenLink Software     Web: http://www.openlinksw.com
Received on Saturday, 2 August 2008 16:18:06 UTC

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