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Re: Fwd: RE: RDF repository implementation

From: Brian McBride <bwm@hplb.hpl.hp.com>
Date: Wed, 21 May 2003 13:24:02 +0100
Message-Id: <5.1.0.14.0.20030521132336.059a8300@localhost>
To: RDF Core <w3c-rdfcore-wg@w3.org>

This email was sent to the wrong list by mistake.  Please ignore.

Brian

At 08:07 21/05/2003 +0100, Brian McBride wrote:

>FYI - please send any other ideas to Christos.
>
>Brian
>
>>From: "Karamanolis, Christos" <christos@exch.hpl.hp.com>
>>To: "McBride, Brian" <bwm@hplb.hpl.hp.com>
>>Cc: "Karamanolis, Christos" <christos@exch.hpl.hp.com>
>>Subject: RE: RDF repository implementation
>>Date: Tue, 20 May 2003 22:38:37 +0100
>>
>>Hi Brian,
>>
>>Thanks for your input. Yes, please feel free to share my email with the
>>other folks there. I will send any future questions / requests for help
>>to the mailing list you suggested.
>>
>>We will look into Jena and Redland in some more detail and will get back
>>to you (rdfi) if we need further help.
>>
>>-- Christos
>>
>>
>> > -----Original Message-----
>> > From: Brian McBride [mailto:bwm@hplb.hpl.hp.com]
>> > Sent: Tuesday, May 20, 2003 7:00 AM
>> > To: Karamanolis, Christos; 'brian_mcbride@hp.com'
>> > Cc: Karamanolis, Christos
>> > Subject: Re: RDF repository implementation
>> >
>> >
>> > Hi Christos,
>> >
>> > Good to virtually meet you.
>> >
>> > A good place to send questions like this is rdfi@cally.hpl.hp.com.
>> >
>> > You seem to have the well known ones.  Your requirement for
>> > C++ could be
>> > the clincher.  The group here built Jena which would be what
>> > you need were
>> > you able to work in Java.  You could still do that if you
>> > were happy with
>> > the java native interface stuff, but I've heard reports of
>> > problems with
>> > that, especially going from native to java.  The only one of
>> > these that I
>> > know is native is Redland - which is written in C.
>> >
>> > I'd like to share your email with the rest of the folks here,
>> > both so they
>> > know about about you and lest they have more to say on the
>> > subject.  Or you
>> > could just join and mail to rdfi as above.
>> >
>> > Brian
>> >
>> > At 17:53 16/05/2003 -0700, Karamanolis, Christos wrote:
>> > >Brian,
>> > >
>> > >I am a member of the storage systems group, at HPL Palo
>> > Alto. We have
>> > >recently started a new project to investigate the use of semantic
>> > >information about data to do things such as fast searching
>> > and efficient
>> > >storage (e.g., in archival storage systems), or intelligent
>> > data hoarding
>> > >for placement and replication (e.g., in distributed storage
>> > systems).
>> > >Thinking about how we can capture semantics, we realized
>> > that people have
>> > >been doing this for the semantic web already. So, I am
>> > currently thinking
>> > >about using RDF to capture different types of semantic info
>> > (exactly what
>> > >types is an open question -- see
>> > >http://www.hpl.hp.com/personal/Christos_Karamanolis/papers/ho
>>tos03.pdf, if
>> >you are interested). And I am looking for a tool to:
>> >1) capture and store RDF relations between objects in some persistent,
>> >lightweight repository;
>> >2) use some simple query language to traverse those relations;
>> >3) have an interface to define and modify the schemas of relations (we
>> >expect them to change over time).
>> >An additional requirement is that such a tool should be easy to
>>integrate
>> >in a (potentially distributed) archival storage system and a C/C++
>> >development environment. No need for fancy web APIs.
>> >
>> >I understand that you are an expert in the field. I wonder if you could
>>
>> >provide some advice about existing tools that I should consider. Here
>>is a
>> >short list I compiled by looking around:
>> >  - Sesame RDF Schema-based Repository and Querying Facility by Jeen
>> > Broekstra and Arjohn Kampman, Aidministrator
>> >  - Jena2 Semantic Web Toolkit Semantic Web Group, HP Labs, Bristol
>> >  - RDFSuite, Institute of Computer Science, FORTH
>> >  - Redland RDF Application Framework by Dave Beckett, Institute for
>> > Learning and Research Technology, University of Bristol
>> >  - RDFDB by R.V. Guha
>> >
>> >Any suggestions/opinions about those systems? Anything else I should
>> >consider? I understand you have been one of the authors of Jena2.
>> >
>> >I would greatly appreciate any help. I have been swamped with all the
>> >information I found out there.
>> >
>> >Thanks,
>> >
>> >         Christos
>> >
>> >
>> >-- Christos Karamanolis
>> >
>> >Storage system group, HP Labs
>> >Phone: (650) 857-6956
Received on Wednesday, 21 May 2003 08:27:24 EDT

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