IRC log of dig on 2010-11-03

Timestamps are in UTC.

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15:11:10 [presbrey]
tabulator: http://www.heppnetz.de/ontologies/goodrelations/20100916/v1.owl
15:11:10 [presbrey]
Serializer: Should be no loops _:n112
15:11:10 [presbrey]
No stack available.
15:22:46 [timbl]
Hmmm
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15:29:59 [timbl]
Why on earth would it have a problem with loops?
15:30:59 [timbl]
(and why no stack available?)
15:41:30 [danbri]
hey timbl, if i was making a foaf crawler in .js, what are the main useful things i could borrow from tabulator src?
15:41:43 [danbri]
(well foaf + skos + other people-related bits and pieces of linked data)
15:43:23 [presbrey]
danbri, going for breadth I assume?
15:46:02 [danbri]
ultimately, for relevance
15:46:24 [danbri]
find people that are somehow close (coauthors/coworkers, interested in same topic, ...) then scoop up a bunch of rdf into a local store
15:46:47 [danbri]
otherwise the crawler dissapears off into livejournal.com foaf, which would take about a year to load up :)
15:47:02 [timbl]
All of rdflib.js I guess
15:47:14 [timbl]
This is running in the browser, right?
15:48:29 [danbri]
yup
15:48:40 [danbri]
so i copied rdflib.js and got rdf/xml parsing from it
15:48:46 [danbri]
i'm not quite sure what else is in there :)
15:52:17 [presbrey]
wow
15:52:38 [webr3]
you could first set up some rules/selectors based on the initial profile, so that if somebody is encountered who know you, or knows the people you know, or is interested in the same thing, then they are stored - only go out to a specific depth and then present findings
15:53:25 [presbrey]
how long does it take?
15:53:26 [webr3]
so if you have :me :interested :something, you set up a filter which will keep triples which match [] :interested :something
15:54:03 [timbl]
What is the goal of the excercise?
15:56:45 [presbrey]
how are you refreshing the network? starting from the beginning? tagging extent boundaries for visitors with free reign?
15:58:33 [timbl]
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16:01:22 [danbri]
re wow, this was pulled thru a php proxy sadly (didn't do the browser trust/permissions thing, and CORS isn't widely out there yet); note to self: make the proxy cache (and pre-parse)
16:01:57 [presbrey]
do it in python
16:02:07 [danbri]
timbl, goal of the exercise is to re-explore notion of a limited web crawl, and a personal sparql store of useful/relevant facts
16:02:08 [timbl]
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16:02:18 [danbri]
oops
16:02:18 [danbri]
[17:02] <danbri> timbl, goal of the exercise is to re-explore notion of a limited web crawl, and a personal sparql store of useful/relevant facts
16:03:03 [danbri]
i don't need all of delicious, all of twitter, all of identica or facebook, flickr in a single store; but pulling in ~1000 people's worth of stuff seems workable, and gets away from doing scary distributed query work
16:03:23 [danbri]
(also it's an excuse for me to update my js knowhow)
16:04:00 [webr3]
could you not just make the sparql queries auto GET data it needs?
16:10:55 [timbl]
Net is flakey here
16:11:32 [timbl]
Where do you store the triples?
16:11:41 [timbl]
or do you thorow tem away as you crawl a th emoment?
16:17:17 [danbri]
timbl, at moment i'm consulting the triples then discarding; hope is to test-drive in browser Indexed Database storage
16:17:23 [danbri]
ideally implemented by webr3 :)
16:19:30 [mhausenblas]
IvanHerman, there should be a report available *very* soon - sorry, the NDA I had to sign is too strict ;)
16:19:44 [IvanHerman]
ok
16:25:36 [mhausenblas]
as soon as I'm allowed, I will blog about it, promise
16:29:25 [mhausenblas]
but I think it is fair to say (and also general consensus) that timbl's 5 star plan will be the foundation of what (hopefully) will come
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16:48:06 [IvanHerman]
mhausenblas: yeay:-)
16:48:42 [mhausenblas]
hehe, that was the least Nigel, Jonathan and I were able to do :D
16:52:01 [danbri]
:)
16:54:54 [mhausenblas]
gtg now - ttyl
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17:37:26 [presbrey]
ericP, any thought about swobjects sparql update against an abstract storage engine?
17:37:49 [ericP]
background, but nothing concrete
17:38:06 [ericP]
sorry, been preoccupied with rdb2rdf
17:38:18 [ericP]
(which would be an example of a sparql update against an abstract storage engine?)
17:38:24 [presbrey]
ok
17:38:41 [presbrey]
maybe you can help with rdf2rdb next
17:39:09 [presbrey]
might help with what I'm asking
17:39:26 [presbrey]
so our problem is that
17:39:46 [presbrey]
the only common storage 'engine' between swobjects and other RDF toolsets is FILE/turtle
17:40:23 [presbrey]
so in providing SPARUL support, storage engine/performance is fundamentally limited
18:02:15 [ericP]
yeah, i like this sqllite strategy
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18:54:36 [webr3]
rdf2indexeddb is one I'm going to have to hit v soon
18:55:08 [webr3]
possibly, applicationcache may moot the need though - will see
19:08:53 [mcherian]
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19:18:05 [presbrey]
webr3, make sure you look at several existing implementations eg. librdf and soon swobjects
19:18:40 [presbrey]
we already have trouble mixing implementations with the same stores
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