Re: Squaring the HTTP-range-14 circle [was Re: Schema.org in RDF ...]

Another anecdote, I don't remember whom I heard this from: From FOAF data you can see that a lot of people say that their homepage is … "Google".

Best,
Richard


On 14 Jun 2011, at 22:37, Michael Brunnbauer wrote:

> 
> re
> 
> as I was talking about "messy" data, some anecdotes from our work with
> foaf-search.net:
> 
> -Want to see some people and groups that are an owl:Ontology ?
> http://www.foaf-search.net/SearchRDFType?type=http%3A%2F%2Fwww.w3.org%2F2002%2F07%2Fowl%23Ontology
> Thank god everyone using our website either knows instantly that this is
> wrong or does not have a clue what owl:Ontology is.
> 
> -Today, our website spent hours merging thousands of different people into
> one person because our java developer made an update and forgot the code to
> check the inverse functional property foaf:mbox_sha1sum (SHA1-hash of mailbox
> URI) for bad values like 08445a31a78661b5c746feff39a9db6e4e2cc5cf (SHA1-hash
> of "mailto:"). We need these kind of hacks to keep everything running.
> 
> -foaf:homepage and foaf:weblog are inverse functional properties in the
> foaf ontology. We excluded them in our reasoners in fear of users having
> shared pages or being sloppy about what to fill in when asked for their
> homepage or weblog. But the very popular livejournal blog software only
> uses foaf:weblog to identify your friends so we had to accept at least
> foaf:weblog.
> 
> -This is something I found before our crawler found it - fortunately:
> http://data.totl.net/dave.rdf
> 
> -From the same website comes a huge database of many of the world's obscure
> industrial bands. Cool - except they are endless and made up on the fly :)
> http://data.totl.net/musicdb/music.cgi/bands?page=1
> 
> -Speaking about fakes: http://fakefriends.me/ makes up fake identities
> including crawlable FOAF RDF data on the fly. And almost every elgg blog our
> FOAF crawler gets to crawl has been taken over by spammers or was installed by
> them in the first place.
> 
> -Things can have so many different foaf:names. What is the canonical one ?
> We are currently using the one with the most quads but this is surely not
> the best possible solution.
> 
> This list will probably grow much larger in the near future.
> 
> Regards,
> 
> Michael Brunnbauer
> 
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Received on Wednesday, 15 June 2011 10:12:15 UTC