Re: [Virtuoso-users] extending RDF structure in already defined database

les which have any resource at subject position that had a URI matching this prefix. This let me evolve the schema easily .. however, it wont work if you drop some classes etc which in my case was not needed. Regards Rajeev J Sebastian

[Virtuoso-users] Performance of Inference

Hi, Is there any performance loss when using the option inference in a triple pattern, when the class does not have any subclasses ? Regards Rajeev J Sebastian

Re: [Virtuoso-users] Delete from SPARQL Endpoint

; > Hugh: We should have a little document that covers the creation of > custom SPARQL endpoints irrespective, as this is highly valuable > information. This is definitely valuable information. Thanks much for this. Regards Rajeev J Sebastian

Re: [Virtuoso-users] Multiple core

so for > multiple core? I think that Virtuoso uses all cores, but one core per query. So, for a single query, you would see activity only on a single core. So you should try to issue multiple queries concurrently, and see if multiple cores are used. Regards Rajeev J Sebastian

Re: [Virtuoso-users] [Virtuoso-devel] bif:contains

set to UTF-8, should I use the [ENC "UTF-8"] syntax in the fulltext query ? Regards Rajeev J Sebastian On Fri, Apr 25, 2008 at 4:36 AM, Hugh Williams wrote: > Hi Kunal, > > The following query should work: > > > select * > from > where {?s foaf:Name ?nam

Re: [Virtuoso-users] [Virtuoso-devel] bif:contains

g in the query string still there ? I.e., I want to use non-latin-1 codepoints in the query string and my server is set to UTF-8, should I use the [ENC "UTF-8"] syntax in the fulltext query ? Regards Rajeev J Sebastian

[Virtuoso-users] Random hanging

s happens a few days later. So, a couple of questions: 1) has anyone seen this before ? 2) if so, any reason why it occurs and any fixes/workarounds ? 3) any way to increase the verbosity of the error log and atleast show what its doing at a particular time ? regards Rajeev J Sebastian

[Virtuoso-users] Error when inserting truples into 5.0.5

insert { <http://www.crlc.in/samagra/2008/niyamasabha/proceedings#top> "11.0483841919"^^<http://www.w3.org/2001/XMLSchema#double>. } Regards Rajeev J Sebastian

Re: [Virtuoso-users] [Fwd: Re: FW: [Virtuoso-devel] Virtuoso RDFS/OWL inference]

Hi Ivan, Excellent! You guys are awesome! Regards Rajeev J Sebastian On Feb 12, 2008 12:21 AM, Ivan Mikhailov wrote: > Rajeev, > > BI extensions will be documented as soon as the syntax is stable. It can > be slightly changed because a) it's our work in progress and b) simila

Re: [Virtuoso-users] [Fwd: Re: FW: [Virtuoso-devel] Virtuoso RDFS/OWL inference]

ng for it online, but I found only one line in the 5.0.4 release notes. Regards Rajeev J Sebastian

Re: [Virtuoso-users] RDF Browser

Hello Hugh, Could you tell the URL for joining the OAT mailing list ? Thanks Regards Rajeev J Sebastian

Re: [Virtuoso-users] inference rules in virtuoso

you should ask Ivan or others regarding that. Definitely, I hope some kind of rule system (and associated indexing, just as in say Postgres) would be great to have ;) Regards Rajeev J Sebastian

Re: [Virtuoso-users] inference rules in virtuoso

Hi Kunal, Currently, only the rdf:type is inferenced, based on rdfs:subClassOf ... also, rdfs:subProperty is also used to infer arcs. Regards Rajeev J Sebastian On Feb 6, 2008 2:56 AM, Kunal Patel wrote: > Hi, > > I am trying to use Virtuoso as an RDFS/OWL storage, inference and &g

Re: [Virtuoso-users] Unusual execution time for query

/sparql_demo/ Regards Rajeev J Sebastian On Feb 2, 2008 1:41 PM, Ivan Mikhailov wrote: > Hello Rajeev, > > It is quite probable that this change in pattern results in global > change in join order of the execution plan of the query. For accurate > diagnostics I need to know the full te

Re: [Virtuoso-users] Free Text Index and Unicode

ot single-character. So you should set the encoding locally > inside the free-text expression, as described in the documentation: Other than the suggestions not working for the error mentioned, I should add that I am using the SPARQL endpoint for this, not the SQL interface. Regards Rajeev J Sebastian

[Virtuoso-users] Unusual execution time for query

? Regards Rajeev J Sebastian

[Virtuoso-users] Free Text Index and Unicode

if I search for അച്ചന്‍ ... i.e., same as the literal. I get the following error: 37000 Error XM029: Free-text expression, line 0: Invalid character in free-text search expression, it may not appear outside quoted string at � Both the above work for latin strings. I dont know about other scripts though. Regards Rajeev J Sebastian

Re: [Virtuoso-users] Support for Describe sparql

Hello Ivan, Thank you for that deep analysis and presentation of Virtuoso internals :) It was very useful for me and I look forward to more of such explorations with you and other developers. Regards Rajeev J Sebastian On Jan 23, 2008 10:23 PM, Ivan Mikhailov wrote: > Rajeev, > &g

Re: [Virtuoso-users] Support for Describe sparql

lease that is scheduled for this weekend. What actually should have worked was "1"^^xsd:int ... since that was the value in my sample data. Also, in Virtuoso, will there be equivalence between typed values ? For e.g., in python, 1 == 1.0 works even thought first is integer and second is a float Regards Rajeev J Sebastian

Re: [Virtuoso-users] Support for Describe sparql

nstead, now the describe and select works correctly. (I wrote the above just for the mailing list archive.) Thanks to all Regards Rajeev J Sebastian On Jan 22, 2008 2:29 PM, Rajeev J Sebastian wrote: > Hello Ivan, > > Thanks for your response. > > The reason I asked about it was t

Re: [Virtuoso-users] Support for Describe sparql

knowledge on Sparql querying ... but is there some special syntax to indicate an integer in the "object" position in the graph pattern ? I think with simple literals, the describe is working correctly for me, but not for these kind of literals (but I have not tested extensively). Any help in t

[Virtuoso-users] Support for Describe sparql

Hello all, Does Virtuoso 5.0.3 support queries of the form: describe ?x where { ?x foaf:name "foo" } ? Regards Rajeev J Sebastian

Re: [Virtuoso-users] Support for "float" literals

Hi Christian, What Ivan is trying to say is that we should use xsd:double instead since it matches better with the conception of decimal-point numbers like geo-coordinates. Regards Rajeev J Sebastian On Jan 20, 2008 5:09 PM, Christian Becker wrote: > Hi Ivan, > I see that xsd:floats a

Re: [Virtuoso-users] Support for "float" literals

query ? Thank you again. Regards Rajeev J Sebastian On Jan 20, 2008 2:50 AM, Ivan Mikhailov wrote: > Hello Rajeev, > > The strongly advised workaround is to use xsd:doublePrecision instead of > xsd:float. The problem with float is that it is not enough precise. > Depending on ha

Re: [Virtuoso-users] Support for "float" literals

Hello Hugh, Thanks for the response! For a few days I thought I was going in the wrong direction :) Especially since the mailing list was so quiet. Regards Rajeev J Sebastian On Jan 20, 2008 2:20 AM, Hugh Williams wrote: > Hi Rajeev, > > This is the correct mailing list to us

Re: [Virtuoso-users] Support for "float" literals

Hello all, I had sent the below attached email to the list regarding an error I had come across, but there was no response. Is the virtuoso-users@lists.sourceforge.net the correct email address for such questions ? Regards Rajeev J Sebastian On Jan 19, 2008 5:51 AM, Rajeev J Sebastian wrote

[Virtuoso-users] Support for "float" literals

Hello all, I am running Virtuoso Version 05.00.3023-pthreads. When running a sparul something like: insert { "21.0396039604"^^. } I get an error, "37000 Error SP031: SPARQL compiler: Current implementation of SPARQL does not supports literals of type RE

[Virtuoso-users] RDF Inference in 5.0

urn ... is this expected behaviour ? Inference seems to work for instances of the classes c2, c3, c4 though ... (i.e., directly using your examples at (http://docs.openlinksw.com/virtuoso/rdfsparqlrule.html) Regards Rajeev J Sebastian

Re: [Virtuoso-users] Support for "including" Statement

me to issue further queries in a recursive manner to retrieve the contents of the entire list/tree. Its a very good thing that bnode ids are stable in Virtuoso. If I am in error in anything I wrote above, please do respond because I'd like to learn more about it ... Regards Rajeev J Sebastian

[Virtuoso-users] Support for "including" Statement

". and sparql similiar to: describe Shouldn't it give the result similiar to: :foo rdf:label "Foo"; dc:title "The Foo". Regards Rajeev J Sebastian

Re: [Virtuoso-users] Check if a table exists / retrieve list of tables

There is a "tables;" isql command for it ... perhaps thats what you want ? Regards Rajeev J Sebastian On 10/6/07, Sören Auer wrote: > Hi all, > > I spend some time today trying to figure out how I can check if there > exists a table with a certain name. For the PHP ODBC

Re: [Virtuoso-users] Testing Virtuoso SPARQL endpoint

ure reason we can see that in fact if it werent for the virtrdf context, it will actually work. Btw, thanks very much for your work on Virtuoso Triple Store! It is really awesome and standards compliant. Regards Rajeev J Sebastian

[Virtuoso-users] Testing Virtuoso SPARQL endpoint

Hi, I'm unit testing a Virtuoso-over-SPARQL client, but the problem is that the virtrdf context (i guess it refers to the rdf mapper) gets in the way of the test. Is there some way to get rid of it during testing ? Regards Rajeev J Sebastian

Re: [Virtuoso-users] make error - ***FAILED: VHOST_DEFINE (lpath=3D>'/PortalCSVS',

quot;http://demo.openlinksw.com/sparql?query=bad_qry"; > > HTTP/1.1 400 Bad Request You are absolutely right, it returns a 400. The reason I was saying so, was because I was not getting the right behavior from Qt ... probably, Im doing something wrong there too. Regards Rajeev j Sebastian

Re: [Virtuoso-users] make error - ***FAILED: VHOST_DEFINE (lpath=3D>'/PortalCSVS',

Hi Mitko, I am using REST. Maybe I'm doing something wrong. Let me test again and see if i can duplicate what you did. Sorry for the noise. Regards Rajeev J Sebastian On 9/25/07, Mitko Iliev wrote: > Hi Rajeev, > > Could you specify what kind of request you are doing against /s

Re: [Virtuoso-users] make error - ***FAILED: VHOST_DEFINE (lpath=3D>'/PortalCSVS',

Hello Patrick van Kleef, I see a problem in the Sparql endpoint ... if there is an error in the query string, it doesnt return any HTTP 4xx error. Rather, it returns a non Sparql Results XML response. Do you have the same result there ? Regards Rajeev J Sebastian On 9/25/07, Virtuoso

Re: [Virtuoso-users] Datatypes of object via ODBC

Hello Tim, Another thing, that could help in this case, is if Virtuoso has some client side driver to access the triple store just as ODBC is used for SQL (I guess similair to how AKT 3store provides an API on top of the MySQL driver). Is there anything like that ? Regards Rajeev J Sebastian On

Re: [Virtuoso-users] Datatypes of object via ODBC

to console fine. The problem is, ?o is of the "any" type as per your descriptions in Virtuoso docs. But, I need to know whether in a given row of the result set, whether ?o is bound to a blank node or an XML Schema literal of some type, etc. How can I determine that ? Regards Rajeev J Sebastian

[Virtuoso-users] Datatypes of object via ODBC

d the developers give some suggestions on the best way to implement this ? Regards Rajeev J Sebastian

Re: [Virtuoso-users] Seek tuto and/or advice to import ontology in database.

rience than the default) Next, you can issue a query: select * where { ?s ?p ?o. } And you will see the results. Of course, I would hope that the Virtuoso developers could illustrate some easy ways, alternatives, etc to the above. (and point out any errors! ... i am writing this entirely from memory

Re: [Virtuoso-users] Seek tuto and/or advice to import ontology in database.

o'); *** Error 42000: [Virtuoso Driver][Virtuoso Server]FA112: Can't stat file UNSPSC.daml, error (2) : No such file or directory at line 1 of Top-Level: RDF_LOAD_RDFXML(file_to_string_output('UNSPSC.daml'), '', 'http://booboo') Also, is there som

Re: [Virtuoso-users] Build problem with VOS 5.0

35:24 Version 05.00.3009-pthreads for Linux as of May 24 2007 00:35:24 uses parts of OpenSSL, PCRE, Html Tidy 00:35:24 SQL Optimizer enabled (max 1000 layouts) 00:35:24 Compiler unit is timed at 0.002786 msec kane@pardus rdf_mappers $ Regards Rajeev J Sebastian

[Virtuoso-users] Build problem with VOS 5.0

s_dav.vad] Interrupt make: *** [all-recursive] Interrupt The line "Waiting Virtuoso Server start on port ..." keeps repeating a lot. I tried restarting the build with "sudo" ... still same problem. Any hints ? Regards Rajeev J Sebastian

Re: [Virtuoso-users] Virtuoso Build Problem

, the following extra triples are generated as needed. Thats great indeed! More questions after I get to play with VOS :) Regards Rajeev J Sebastian

Re: [Virtuoso-users] Virtuoso Build Problem

to work. I'll give you the results when it is complete. I have a question regarding VOS. What is the Inference capability of VOS for RDF ? Is there any documentation regarding that ? Regards Rajeev J Sebastian

Re: [Virtuoso-users] Virtuoso Build Problem

Linux 2007.1, and I was planning on making a pisi package for VOS. The VOSMake page mentions 3.1.1 ... is VOS build system picky about this ? Regards Rajeev J Sebastian

[Virtuoso-users] Virtuoso Build Problem

he sql_to_c.awk script is failing to add the quotes around these lines. Since I do not know awk, I hope that someone could help me resolve this problem to build virtuoso. Regards Rajeev J Sebastian