[Virtuoso-users] CfP: Hacking RDF with Perl Hackathon in London next week

need to be well-versed in Perl as long as one would be able to make a substantial contribution to writing this module. Best, Kjetil -- Kjetil Kjernsmo Ph.d Research Fellow, Semantic Web kje...@kjernsmo.net http://www.kjetil.kjernsmo.net/

Re: [Virtuoso-users] An (experimental) support for big SPARQL INSERT DATA and SPARQL DELETE DATA statements

familiar with the code to fix it. Med vennlig hilsen Kjetil Kjernsmo -- Senior Kunnskapsingeniør / Redaktør for SPARQL FR Mobil: 986 48 234 Epost: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  COMPUTAS SETTER KUNNSKAP I SYSTEM  | Computas AS  Postboks 482, 1327 Lysaker | Telefon

Re: [Virtuoso-users] controlling query time limits from the sparql endpoint

Kjetil Kjernsmo -- Senior Knowledge Engineer / SPARQL FR Editor Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker | Phone:+47 6783 1000 | Fax:+47 6783 1001

[Virtuoso-users] Inserting data into an arbitrary graph with HTTP

data into an arbitrary graph using HTTP? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer / SPARQL FR Editor Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker | Phone:+47

Re: [Virtuoso-users] Query log?

All, Just a tiny follow-up. It seems like the trace_on setting disappears after a server restart. Can I set it persistently somewhere? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com

[Virtuoso-users] ORDER BY query gives error

.P = __i2idn ( __bft( 'http://www.w3.org/1999/02/22-rdf-syntax-ns#type' , 1)) AND isiri_id ( s-1-6-t4.O) AND s-1-6-t4.O = __i2idn ( __bft( 'http://msone.computas.no/graphs#InstanceGraph' , 1)) AND s-1-11-t5.P = __i2idn ( __bft( 'ht Kind regards Kjetil Kjernsmo

Re: [Virtuoso-users] ORDER BY weirdness and some problems with LIMITs

layer and have paging. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker | Phone:+47 6783 1000 | Fax:+47 6783 1001

Re: [Virtuoso-users] Debian packages again

of Ubuntu, this is the hard deadline. To be confident, it should be uploaded well in advanced before that date. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE

Re: [Virtuoso-users] Case sensitivity with UTF-8 and regexps

On Tuesday 21 April 2009 11:21:32 Kjetil Kjernsmo wrote: øl and Øl yields different results and given the i operator, we would expect it to give the same result. Actually, this turns out to have become worse in 5.0.11. Now prefix dct: http://purl.org/dc/terms/ CONSTRUCT { ?resource rdfs:label

[Virtuoso-users] Case sensitivity with UTF-8 and regexps

5.0.10, it seems to have some case sensitivity problems with the UTF-8 character, in the final filter clause. øl and Øl yields different results and given the i operator, we would expect it to give the same result. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48

[Virtuoso-users] Regexps with UTF-8-problems

that this problem is not universal, we have some queries that go through, and it may have something to with how the data has been read, but we haven't seen a pattern. I suppose that these queries are so simple, the corresponding SQL isn't the interesting part here? Kind regards Kjetil Kjernsmo

Re: [Virtuoso-users] Unexpected CONSTRUCT result with variable predicate

drop it in my app. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker | Phone:+47 6783 1000 | Fax:+47 6783 1001

[Virtuoso-users] Setting defines when using JDBC

)[0]); but that seems to cause Jena to croak and say the query is invalid. Then, the question is of course whether using JDBC gives me much? I could just use the endpoint and then parse and reserialise the result, but that seems wasteful. Kind regards Kjetil Kjernsmo -- Senior Knowledge

Re: [Virtuoso-users] Surprisingly high number of solutions to longquery

extension? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker | Phone:+47 6783 1000 | Fax:+47 6783 1001

[Virtuoso-users] Surprisingly high number of solutions to long query

) . ?resource dct:title ?title . } FILTER regex(?title, turi, i) } ORDER BY ?title LIMIT 4 OFFSET 0 The query can be run at this endpoint: http://msoneutv.computas.no:8890/sparql Can anyone explain why this happens? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986

Re: [Virtuoso-users] constructing URI's from literals

it appears that you cannot cast from string to URI, only from URI to string. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker

Re: [Virtuoso-users] constructing URI's from literals

sound technically unfeasible from a naive viewpoint. Yup, it doesn't sound too unfeasible. Another thing we've done a bit is to construct URIs from literals where a base URI and e.g. a dct:title is concatenated. I think we may raise this with the DAWG II. Kind regards Kjetil Kjernsmo -- Senior

Re: [Virtuoso-users] Hanging at 100% CPU on insane query

to. Note you can also use the following param in the [SPARQL] section to control result set sizes: ResultSetMaxRows = 10 Yes, that's in the default setup, so I have that allready. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email

Re: [Virtuoso-users] Dumb strings in free text search

and is certainly less elegant than modifying the indexer to do the job. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker

Re: [Virtuoso-users] Problems loading data

conform? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker | Phone:+47 6783 1000 | Fax:+47 6783 1001

[Virtuoso-users] Problems loading data

, with no changes to what I do, as far as I can tell. Weird, huh? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker | Phone

[Virtuoso-users] case-insensitive bif:contains; phrase wildcards

a common abbreviation of the latter). It appears from the BNF that this is not possible, correct? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box

Re: [Virtuoso-users] DESCRIBEing a URI white implicitly naming the graph

Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker | Phone:+47 6783 1000 | Fax:+47 6783 1001

Re: [Virtuoso-users] DESCRIBEing a URI white implicitly naming the graph

Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker | Phone:+47 6783 1000 | Fax:+47 6783 1001

Re: [Virtuoso-users] DESCRIBEing a URI white implicitly naming the graph

of unique subject URIs, which is what the DESCRIBE in practise, whereas the CONSTRUCT would limit on the number of solutions, and I don't know how many of them I'd like. Also, the CONSTRUCT is arguably more complex (for the programmer) than the DESCRIBE query. Kind regards Kjetil Kjernsmo

[Virtuoso-users] DESCRIBEing a URI white implicitly naming the graph

a bit confused about graph naming. Does this problem have a more trivial solution? The endpoint where all this runs is a public test endpoint at http://msone.computas.no:8890/sparql Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern

[Virtuoso-users] Weird DESCRIBE output (was: Problems creating RDF/XML from Virtuoso model through Jena)

-SNAPSHOT/resource/vi_tidiga__foedd_foer_tidigt_004314 Any comments on that? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker

Re: [Virtuoso-users] Problems creating RDF/XML from Virtuoso model through Jena

to share the status with you nevertheless. I'll continue to work on this problem. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327

Re: [Virtuoso-users] Problems creating RDF/XML from Virtuoso model through Jena

On Monday 17 November 2008 17:19:57 Kjetil Kjernsmo wrote: All, I have another problem with my SPARQL Endpoint servlet, which is just supposed to generate RDF/XML-ABBREV from a query. Thanks to Hugh, I now run a 5.0.10 prerelease, which fixes a related bug, but it didn't fix my problem

[Virtuoso-users] Query that crashes Virtuoso

bif:contains 'oslo s' . } LIMIT 10 It would have to be rewritten a bit, but it appears that the critical thing is the literal that has a space but no asterisk. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http

[Virtuoso-users] Case-insensitive regex problem

development endpoint running 5.0.9 is here: http://msone.computas.no:8890/sparql This doesn't return any solutions, but FILTER regex(str(?title), ^ Aber, i) does. So, it appears that something is wrong with the case-insensitive match? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer

[Virtuoso-users] Possible bug in Virtuoso Jena driver?

at this, so it is not in the endpoint code. Of course, it could be in some Jena code, but we've never seen this when using a Postgres backend, so it seems it is most likely in the driver. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern

Re: [Virtuoso-users] Possible bug in Virtuoso Jena driver?

On Thursday 20 November 2008 12:47:45 Kjetil Kjernsmo wrote: The problem has a pretty clear symptom: When running against an endpoint based on a Jena Model, I get the following date: j.0:dateAccepted rdf:datatype=http://www.w3.org/2001/XMLSchema#dateTime;2003-07-11 09:25:31.0/j.0

Re: [Virtuoso-users] Announcing OpenLink Virtuoso, Open-Source Edition v5.0.9

repository for Ubuntu 8.04 (which is a Long Term Support release), 8.10 (which is current) and Debian Lenny. It is just a static web server http://www.debian.org/doc/manuals/repository-howto/repository-howto.en.html Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email

[Virtuoso-users] RDF Views URI sprintf; owl:same-as URI; some comments

wouldn't think that most SPARQL users would need to understand the details of how the quads are stored in the database, which is now the first thing you encounter. Perhaps these belong in different chapters or documents? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48

Re: [Virtuoso-users] RDF Views URI sprintf; owl:same-as URI; some comments

documents with same title, taht is probably not what you expect. Thus an IRI with ID is a safe choice. Right, that's why I call for something with a little more sophistication. E.g. if Virtuoso, when it first inserts such a triple, is able to add a running number to the %U. Kind regards Kjetil

[Virtuoso-users] Turtle parsing errors

nonsensical, but it passes the other parsers, and :rdf:type owl:Ontology ; Well, you get the idea? Perhaps this is something that entered the spec with the Team Submission? Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com

Re: [Virtuoso-users] Packaging Virtuoso for Debian

. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS PO Box 482, N-1327 Lysaker | Phone:+47 6783 1000 | Fax:+47 6783 1001

Re: [Virtuoso-users] Simple freetext search with SPARQL

. } or something like that... Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Direct: +47 6783 1136 | Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS Vollsveien 9, PO Box 482, N-1327 Lysaker | Phone:+47 6783

[Virtuoso-users] Simple freetext search with SPARQL

the possibility of defining a pattern for this index. Kind regards Kjetil Kjernsmo -- Senior Knowledge Engineer Direct: +47 6783 1136 | Mobile: +47 986 48 234 Email: kjetil.kjern...@computas.com Web: http://www.computas.com/ |  SHARE YOUR KNOWLEDGE  | Computas AS Vollsveien 9, PO Box 482, N-1327