[foaf-dev] [foaf-protocols] FOAF sites offline during cleanup
steve.harris at garlik.com
Wed Apr 29 16:06:50 CEST 2009
On 29 Apr 2009, at 14:57, Kingsley Idehen wrote:
> Steve Harris wrote:
>> On 29 Apr 2009, at 14:06, Kingsley Idehen wrote:
>>> If we isolate the "FOAF Profiles" bubble of the LOD-Cloud
>>> pictorial, would you say these sources are representative:
>>> 1. http://esw.w3.org/topic/FoafSites
>>> 2. http://pingthesemanticweb.com (PTSW)
>>> 3. http://sindice.com
>> It seems highly unlikely.
>> The only way to get a representative sample is to select some of
>> the data randomly.
> So I end this thread by asking: isn't that basically what we have in
> our instance? Its data comes from the sources above plus others.
I think I wasn't clear enough, I meant "...is to select some of the
data [from the whole population] randomly".
Given that the 3 sources above don't have 100% coverage, and are
biased in their own ways that can't be the case.
Anyway, that's really offtopic, my point was that if you have a large
enough slice of the FOAF data you can see that the majority of the
data has bNodes in it.
>> ESW links a human-curated selection of sites, PTSW gets fed
>> similarly similarly and Sindice crawled, IIUC.
>> I don't think anyone even has a good idea of how many FOAF files
>> are out there, to know if they have a good selection or not. I
>> think we have 12 million or so unique ones, but we know there's an
>> awful lot more out there.
>> Ontop of that, "FOAF" is especially vague, eg. do qdos.com profiles
>> (eg. http://qdos.com/user/Steve-Harris/18b6f60b41e05aaa418565ebfe901d6b/turtle)
>> count as FOAF profiles? They have foaf:People in them, and use one
>> or two foaf properties, but foaf: is not the most common prefix.
>> What about DOAP files with lots of FOAF in them? Some use foaf:
>> more than doap:, and so on.
> DOAP files are picked up from PTSW and a few other data sets that
> use FOAF.
Some of them are, yes.
> Maybe we chat by phone of private IM (IRC, Twitter, Identi.ca etc
> about this) ?
If you like, I'm on #swig, but I'm AFK quite a bit this afternoon, so
it might be patchy.
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