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Posted to dev@stanbol.apache.org by Fabian Christ <ch...@googlemail.com> on 2012/08/02 09:11:25 UTC
Re: ApacheCon EU CFP is open
Hi,
I do not know how many presentation will be potentially accepted. I
would assume that there is not that much room for more than one
presentation from each podling but that is just a guess. We will see.
Okay then, I will submit a proposal for an overview talk about Stanbol
which is lead by use cases and scenarios where Stanbol may be a
helpful framework for people, as Tommaso suggested.
Best,
- Fabian
2012/7/31 Suat Gonul <su...@gmail.com>:
> Hi all,
>
> I can submit a presentation about the Contenthub. It's mainly about
> Contenthub, but it also includes Enhancer, Entityhub and CMS Adapter
> components. The use case may be similar to our previously ehealth
> demonstration [1]. In terms of its content, it may well suit after
> Rupert's presentation. So, the use case may be as follows:
>
> * A content administrator would configure a few healthcare datasets
> as Referenced/Managed Sites based on the indexing facilities of
> Entityhub.
> * He would configure KeywordLinkingEngine's associated with those
> Sites to be able to do health domain specific enhancements.
> * After analyzing the details of the external datasets, he defines
> an LDPath which is compatible with the external datasets. This
> LDPath is used as the configuration of a Solr based SemanticIndex.
> * In the next step, the admin configures a CMS Adapter based Store
> associated with his workspace in the CMS.
> * When he creates/updates document on the CMS, the Store keeps track
> of the changes on the CMS documents and enhance them automatically.
> * The LDPath based SemanticIndex becomes aware of the changes in the
> Store and indexes the documents according to its LDPath
> configuration. In this process, it also gathers additional
> information from the external datasets for the named entities
> recognized in the documents from the ManagedSites associated with
> the external datasets.
> * As a result, the admin would have a semantically enhanced Solr
> index considering in terms health domain and he can use the index
> directly through its RESTful API.
>
> I hope the use case is clear. What do you think?
>
> Best,
> Suat
>
> [1] http://www.youtube.com/watch?v=l7n6aRFcn1U
>
>
> On 07/31/2012 11:40 AM, Rupert Westenthaler wrote:
>> Hi,
>>
>> I think I will go than for a presentation about how to use the Stanbol
>> Enhancer to link Linked Data Entities.
>>
>> * Intro
>> * NER vs. KeywordExtraction (typical Chain configurations, used
>> Enhancement Engines
>> * Indexing Datasets for the Entityhub
>> * Managing Entities via the RESTful Interface (Entityhub Managed Sites)
>>
>> This assumes that there is also a more general overview about Stanbol
>> and the Stanbol Enhancer - hoping @Fabian for that.
>>
>> WDYT
>> best
>> Rupert Westenthaler
>>
>> On Thu, Jul 26, 2012 at 3:47 PM, Tommaso Teofili
>> <to...@gmail.com> wrote:
>>> In my opinion starting from a real use case which demonstrates a subset of
>>> the whole set of features is a good way of catching audience's attention.
>>> My 2 cents,
>>> Tommaso
>>>
>>> 2012/7/26 Rupert Westenthaler <ru...@gmail.com>
>>>
>>>> On Thu, Jul 26, 2012 at 11:04 AM, Fabian Christ
>>>> <ch...@googlemail.com> wrote:
>>>>> Hi,
>>>>>
>>>>> I just want to point out that the CFP deadline is 3rd August, 2012.
>>>>>
>>>> Yes I am interested ...
>>>>
>>>> Should we aim for a Stanbol overview talk or rather concentrate on -
>>>> maybe several - specific features/components
>>>>
>>>> best
>>>> Rupert
>>>>
>>>>> Is there any interest from other committers submit a talk?
>>>>>
>>>>> Best,
>>>>> - Fabian
>>>>>
>>>>> 2012/7/17 Fabian Christ <ch...@googlemail.com>:
>>>>>> Hi,
>>>>>>
>>>>>> the call for papers and talks for the upcoming ApacheCon EU is open
>>>>>>
>>>>>> http://www.apachecon.eu/cfp/
>>>>>>
>>>>>> I would be interested in submitting a paper/talk about Stanbol.
>>>>>> Perhaps we should start to collect ideas here. Anyone else here
>>>>>> interested in writing something?
>>>>>>
>>>>>> Best,
>>>>>> - Fabian
>>>>>>
>>>>>> --
>>>>>> Fabian
>>>>>> http://twitter.com/fctwitt
>>>>>
>>>>>
>>>>> --
>>>>> Fabian
>>>>> http://twitter.com/fctwitt
>>>>
>>>>
>>>> --
>>>> | Rupert Westenthaler rupert.westenthaler@gmail.com
>>>> | Bodenlehenstraße 11 ++43-699-11108907
>>>> | A-5500 Bischofshofen
>>>>
>>
>>
>
--
Fabian
http://twitter.com/fctwitt
Re: ApacheCon EU CFP is open
Posted by Reto Bachmann-Gmür <re...@apache.org>.
Hi,
To have the Linked Data track I don't think we should limit the
presentations to one per podling. After all most LD related projects are
still incubating.
Cheers,
Reto
On Thu, Aug 2, 2012 at 9:11 AM, Fabian Christ
<ch...@googlemail.com>wrote:
> Hi,
>
> I do not know how many presentation will be potentially accepted. I
> would assume that there is not that much room for more than one
> presentation from each podling but that is just a guess. We will see.
>
> Okay then, I will submit a proposal for an overview talk about Stanbol
> which is lead by use cases and scenarios where Stanbol may be a
> helpful framework for people, as Tommaso suggested.
>
> Best,
> - Fabian
>
> 2012/7/31 Suat Gonul <su...@gmail.com>:
> > Hi all,
> >
> > I can submit a presentation about the Contenthub. It's mainly about
> > Contenthub, but it also includes Enhancer, Entityhub and CMS Adapter
> > components. The use case may be similar to our previously ehealth
> > demonstration [1]. In terms of its content, it may well suit after
> > Rupert's presentation. So, the use case may be as follows:
> >
> > * A content administrator would configure a few healthcare datasets
> > as Referenced/Managed Sites based on the indexing facilities of
> > Entityhub.
> > * He would configure KeywordLinkingEngine's associated with those
> > Sites to be able to do health domain specific enhancements.
> > * After analyzing the details of the external datasets, he defines
> > an LDPath which is compatible with the external datasets. This
> > LDPath is used as the configuration of a Solr based SemanticIndex.
> > * In the next step, the admin configures a CMS Adapter based Store
> > associated with his workspace in the CMS.
> > * When he creates/updates document on the CMS, the Store keeps track
> > of the changes on the CMS documents and enhance them automatically.
> > * The LDPath based SemanticIndex becomes aware of the changes in the
> > Store and indexes the documents according to its LDPath
> > configuration. In this process, it also gathers additional
> > information from the external datasets for the named entities
> > recognized in the documents from the ManagedSites associated with
> > the external datasets.
> > * As a result, the admin would have a semantically enhanced Solr
> > index considering in terms health domain and he can use the index
> > directly through its RESTful API.
> >
> > I hope the use case is clear. What do you think?
> >
> > Best,
> > Suat
> >
> > [1] http://www.youtube.com/watch?v=l7n6aRFcn1U
> >
> >
> > On 07/31/2012 11:40 AM, Rupert Westenthaler wrote:
> >> Hi,
> >>
> >> I think I will go than for a presentation about how to use the Stanbol
> >> Enhancer to link Linked Data Entities.
> >>
> >> * Intro
> >> * NER vs. KeywordExtraction (typical Chain configurations, used
> >> Enhancement Engines
> >> * Indexing Datasets for the Entityhub
> >> * Managing Entities via the RESTful Interface (Entityhub Managed Sites)
> >>
> >> This assumes that there is also a more general overview about Stanbol
> >> and the Stanbol Enhancer - hoping @Fabian for that.
> >>
> >> WDYT
> >> best
> >> Rupert Westenthaler
> >>
> >> On Thu, Jul 26, 2012 at 3:47 PM, Tommaso Teofili
> >> <to...@gmail.com> wrote:
> >>> In my opinion starting from a real use case which demonstrates a
> subset of
> >>> the whole set of features is a good way of catching audience's
> attention.
> >>> My 2 cents,
> >>> Tommaso
> >>>
> >>> 2012/7/26 Rupert Westenthaler <ru...@gmail.com>
> >>>
> >>>> On Thu, Jul 26, 2012 at 11:04 AM, Fabian Christ
> >>>> <ch...@googlemail.com> wrote:
> >>>>> Hi,
> >>>>>
> >>>>> I just want to point out that the CFP deadline is 3rd August, 2012.
> >>>>>
> >>>> Yes I am interested ...
> >>>>
> >>>> Should we aim for a Stanbol overview talk or rather concentrate on -
> >>>> maybe several - specific features/components
> >>>>
> >>>> best
> >>>> Rupert
> >>>>
> >>>>> Is there any interest from other committers submit a talk?
> >>>>>
> >>>>> Best,
> >>>>> - Fabian
> >>>>>
> >>>>> 2012/7/17 Fabian Christ <ch...@googlemail.com>:
> >>>>>> Hi,
> >>>>>>
> >>>>>> the call for papers and talks for the upcoming ApacheCon EU is open
> >>>>>>
> >>>>>> http://www.apachecon.eu/cfp/
> >>>>>>
> >>>>>> I would be interested in submitting a paper/talk about Stanbol.
> >>>>>> Perhaps we should start to collect ideas here. Anyone else here
> >>>>>> interested in writing something?
> >>>>>>
> >>>>>> Best,
> >>>>>> - Fabian
> >>>>>>
> >>>>>> --
> >>>>>> Fabian
> >>>>>> http://twitter.com/fctwitt
> >>>>>
> >>>>>
> >>>>> --
> >>>>> Fabian
> >>>>> http://twitter.com/fctwitt
> >>>>
> >>>>
> >>>> --
> >>>> | Rupert Westenthaler rupert.westenthaler@gmail.com
> >>>> | Bodenlehenstraße 11 ++43-699-11108907
> >>>> | A-5500 Bischofshofen
> >>>>
> >>
> >>
> >
>
>
>
> --
> Fabian
> http://twitter.com/fctwitt
>
Re: ApacheCon EU CFP is open
Posted by Sebastian Schaffert <se...@salzburgresearch.at>.
Hi Reto,
comments inline. ;-)
Am 03.08.2012 um 12:54 schrieb Reto Bachmann-Gmür:
> I agree that clerezza should finally have tha fastlane for sparql query,
> the current approach makes only sense if a query is against graphs from
> multiple backends. This is definitively a bottle neck now.
>
> What puzzles me is that you seem to think that the sesame api is cleaner
> than the clerezza one. The clerezza api was introduced as non of the api
> available would model the rdf abstract syntax without tying additional
> concepts and utility classes into the core. If you find anything that's not
> clean I'd like to address this.
Essentially, Sesame already provides many of the things Clerezza promises, and it is well proven, established, and highly performant. So I don't completely understand the rationale of reinventing the wheel with Clerezza.
I also don't understand your argument of tying additional concepts and utility classes into the core. Clerezza implements utility classes in the same way as Sesame, so where is the difference? Additionally, the Sesame utility classes simply extend the Java core functionality (e.g. with iterators that can throw checked exceptions).
One aspect I like about the Sesame API is its completely modular structure at several levels. This allows me to easily and cleanly add functionality as needed, e.g.:
- a custom triple store like the one I described before; you can e.g. easily provide a Jena TDB backend for Sesame (see http://sjadapter.sourceforge.net/)
- a custom SPARQL implementation that allows a very efficient native evaluation; at the same time, Sesame provides me an abstract syntax tree and completely frees me from all the nasty parsing stuff and implements the latest SPARQL specification for queries, updates and federation extensions without me having to actually care
- a very clean Java SPI based approach for registering RDF parsers and serializers that can operate natively on the respective triple store implementations
- easily wrap filters around triple stores or iterators
You can easily see the modularity by looking at the many Maven artifacts the project is composed off. Essentially, if I don't need a functionality I can simply leave it out, and if I need it, adding it is a no-brainer.
In addition, the Sesame data model is completely based on lightweight interfaces instead of wrapper objects. This makes it very easy to provide efficient implementations and is IMHO very clean. In contrast, Clerezza provides its complete own RDF model based on your own version of a triple, your own version of a node, your own version of a URI, …
What I am missing from Clerezza:
- a lightweight data model that does not require additional instances in main memory
- a good reuse of functionality that is already there, e.g. direct SPARQL, transactions, …
- support for named graphs / contexts
- support for SPARQL Update
- new TripleImpl(…) is a Java anti-pattern. If something is called …Impl it should not be instantiated with new.
I have been working with RDF APIs for about 10 years now in various programming languages (even in Prolog, Haskell and Python). And my conclusion at the moment is that Sesame by far offers the most convenient API for a developer. But I am of course open to switching in case I get convincing arguments. ;-)
>
> It seems that what you are using of sesame is mainly the spi/api and not
> the actual triple store. This is definitively something clerezza should
> have a good offer for.
So convince me why it is BETTER than the established project ;-)
>
> When I last looked at it sesame was not ready to be used in apache
> projects, not sure if license issues are the cause of it not being
> available in maven central.
Sesame is under a BSD license, so it should be compatible with Apache projects:
http://www.openrdf.org/download.jsp
The main issue might be that it is not yet completely OSGi compatible (at least not on a per-component level).
If it is indeed not compatible with Apache projects, it should be easy to contact the developers and simply ask them whether this can be changed.
Greetings,
Sebastian
--
| Dr. Sebastian Schaffert sebastian.schaffert@salzburgresearch.at
| Salzburg Research Forschungsgesellschaft http://www.salzburgresearch.at
| Head of Knowledge and Media Technologies Group +43 662 2288 423
| Jakob-Haringer Strasse 5/II
| A-5020 Salzburg
Re: ApacheCon EU CFP is open
Posted by Reto Bachmann-Gmür <re...@apache.org>.
I agree that clerezza should finally have tha fastlane for sparql query,
the current approach makes only sense if a query is against graphs from
multiple backends. This is definitively a bottle neck now.
What puzzles me is that you seem to think that the sesame api is cleaner
than the clerezza one. The clerezza api was introduced as non of the api
available would model the rdf abstract syntax without tying additional
concepts and utility classes into the core. If you find anything that's not
clean I'd like to address this.
It seems that what you are using of sesame is mainly the spi/api and not
the actual triple store. This is definitively something clerezza should
have a good offer for.
When I last looked at it sesame was not ready to be used in apache
projects, not sure if license issues are the cause of it not being
available in maven central.
Cheers,
Reto
On Aug 3, 2012 10:09 AM, "Sebastian Schaffert" <
sebastian.schaffert@salzburgresearch.at> wrote:
> Hi Tommaso,
>
> I have worked a bit with Clerezza in the context of Stanbol. While I can
> see the advantages of being triple-store agnostic and having a large OSGi
> infrastructure already in place, currently we do not intend to base the
> implementation on Clerezza. There are a number of reasons for this:
> - we implement a reasoning and a versioning functionality that require
> low-level access to the triple store to be efficient; this would mean that
> we rather implement a triple store implementation beneath Sesame or Jena
> and use these APIs than the other way round; since both are considered
> "killer-features" by many users, I would not like to remove this
> functionality
> - the Linked Data Server should be capable of handling hundreds of
> millions or even billions of triples (our current biggest productive
> scenario has around 140 million triples) and efficiently run queries
> (SPARQL) over this dataset; an intermediate layer in the way implemented by
> Clerezza is not suitable for this (running efficient SPARQL queries
> requires translating them into queries on the storage layer - e.g. SQL -
> and cannot be done on top of the API level)
> - Clerezza essentially provides YET ANOTHER API for managing triples;
> consequence: developers need to learn its specifics, the new API needs to
> be fire-proven again even though the other two (Sesame and Jena) are
> already established, the existing standards (SPARQL query+update, various
> RDF serialization formats, …) need to be implemented yet-again
>
> At the moment, our implementation builds mostly on the Sesame API because
> it is in our opinion by far the cleanest existing API for working with RDF
> (in fact, I consider it very well thought out and consistent, I have worked
> with both Sesame and Jena for many years). This is of course not a hard
> constraint, but for the time being I would keep it like this to avoid
> unnecessary additional effort. In the future, however, it might make sense
> to use Clerezza as a "middle layer" inbetween our low-level and our
> high-level functionalities (depending on how Clerezza itself develops).
>
> If you want to, we can discuss this also at ApacheCon, perhaps I am
> missing something. ;-)
>
> Greetings,
>
> Sebastian
>
>
> Am 02.08.2012 um 11:11 schrieb Tommaso Teofili:
>
> > Hi Sebastian,
> >
> > that looks very good, reading your idea of a proposal (which I like) I am
> > wondering what do you think about using / extending Apache Clerezza as
> the
> > basic infrastructure for that.
> > Reasons for that would be: it's triple store agnostic (and extensible),
> can
> > "offer" REST interfaces for the underlying data, Stanbol is based on it.
> > Surely it should be improved for scalability purposes (i.e. building a
> > cluster of Clerezza instances).
> >
> > Thanks for sharing your nice proposal.
> > Looking forward to meet you at the ApacheCon.
> > Cheers,
> > Tommaso
> >
> > 2012/8/2 Sebastian Schaffert <se...@salzburgresearch.at>
> >
> >> Dear all,
> >>
> >> Rupert and I would also like to propose a presentation about a "Apache
> >> Linked Data Server", which could continue the work we have so far been
> >> doing in the integration of our Linked Media Framework and Apache
> Stanbol.
> >> The idea here would that we submit significant parts of the LMF as an
> >> Apache incubator proposal that would closely integrate with Stanbol,
> which
> >> could eventually result in the mentioned "Apache Linked Data Server".
> >>
> >> Why would this be useful? More and more institutions participate in
> "open
> >> data" initiatives, but open data currently mostly means simply
> publishing a
> >> CSV or XLS file on a Web server. Semantic Web technology and Linked Data
> >> would offer much better interoperability, but if you really plan to
> publish
> >> data, the amount of work required is significant (e.g. setting up a
> >> Virtuoso server) and does not integrate so well with other technologies
> >> that are in use in institutions. An Open Source Apache project that
> could
> >> be deployed easily would make it much easier, especially for public
> >> institutions or small enterprises, to offer their data publically.
> >>
> >> I have some screencasts already on how this works with the LMF:
> >>
> >> http://code.google.com/p/lmf/
> >>
> >> And we would like to discuss in what form it would make sense to
> transform
> >> this into an Apache project. The presentation at ApacheCon could be a
> first
> >> presentation of this idea.
> >>
> >> Greetings,
> >>
> >> Sebastian
> >>
> >> Am 02.08.2012 um 09:11 schrieb Fabian Christ:
> >>
> >>> Hi,
> >>>
> >>> I do not know how many presentation will be potentially accepted. I
> >>> would assume that there is not that much room for more than one
> >>> presentation from each podling but that is just a guess. We will see.
> >>>
> >>> Okay then, I will submit a proposal for an overview talk about Stanbol
> >>> which is lead by use cases and scenarios where Stanbol may be a
> >>> helpful framework for people, as Tommaso suggested.
> >>>
> >>> Best,
> >>> - Fabian
> >>>
> >>> 2012/7/31 Suat Gonul <su...@gmail.com>:
> >>>> Hi all,
> >>>>
> >>>> I can submit a presentation about the Contenthub. It's mainly about
> >>>> Contenthub, but it also includes Enhancer, Entityhub and CMS Adapter
> >>>> components. The use case may be similar to our previously ehealth
> >>>> demonstration [1]. In terms of its content, it may well suit after
> >>>> Rupert's presentation. So, the use case may be as follows:
> >>>>
> >>>> * A content administrator would configure a few healthcare datasets
> >>>> as Referenced/Managed Sites based on the indexing facilities of
> >>>> Entityhub.
> >>>> * He would configure KeywordLinkingEngine's associated with those
> >>>> Sites to be able to do health domain specific enhancements.
> >>>> * After analyzing the details of the external datasets, he defines
> >>>> an LDPath which is compatible with the external datasets. This
> >>>> LDPath is used as the configuration of a Solr based SemanticIndex.
> >>>> * In the next step, the admin configures a CMS Adapter based Store
> >>>> associated with his workspace in the CMS.
> >>>> * When he creates/updates document on the CMS, the Store keeps track
> >>>> of the changes on the CMS documents and enhance them
> automatically.
> >>>> * The LDPath based SemanticIndex becomes aware of the changes in the
> >>>> Store and indexes the documents according to its LDPath
> >>>> configuration. In this process, it also gathers additional
> >>>> information from the external datasets for the named entities
> >>>> recognized in the documents from the ManagedSites associated with
> >>>> the external datasets.
> >>>> * As a result, the admin would have a semantically enhanced Solr
> >>>> index considering in terms health domain and he can use the index
> >>>> directly through its RESTful API.
> >>>>
> >>>> I hope the use case is clear. What do you think?
> >>>>
> >>>> Best,
> >>>> Suat
> >>>>
> >>>> [1] http://www.youtube.com/watch?v=l7n6aRFcn1U
> >>>>
> >>>>
> >>>> On 07/31/2012 11:40 AM, Rupert Westenthaler wrote:
> >>>>> Hi,
> >>>>>
> >>>>> I think I will go than for a presentation about how to use the
> Stanbol
> >>>>> Enhancer to link Linked Data Entities.
> >>>>>
> >>>>> * Intro
> >>>>> * NER vs. KeywordExtraction (typical Chain configurations, used
> >>>>> Enhancement Engines
> >>>>> * Indexing Datasets for the Entityhub
> >>>>> * Managing Entities via the RESTful Interface (Entityhub Managed
> Sites)
> >>>>>
> >>>>> This assumes that there is also a more general overview about Stanbol
> >>>>> and the Stanbol Enhancer - hoping @Fabian for that.
> >>>>>
> >>>>> WDYT
> >>>>> best
> >>>>> Rupert Westenthaler
> >>>>>
> >>>>> On Thu, Jul 26, 2012 at 3:47 PM, Tommaso Teofili
> >>>>> <to...@gmail.com> wrote:
> >>>>>> In my opinion starting from a real use case which demonstrates a
> >> subset of
> >>>>>> the whole set of features is a good way of catching audience's
> >> attention.
> >>>>>> My 2 cents,
> >>>>>> Tommaso
> >>>>>>
> >>>>>> 2012/7/26 Rupert Westenthaler <ru...@gmail.com>
> >>>>>>
> >>>>>>> On Thu, Jul 26, 2012 at 11:04 AM, Fabian Christ
> >>>>>>> <ch...@googlemail.com> wrote:
> >>>>>>>> Hi,
> >>>>>>>>
> >>>>>>>> I just want to point out that the CFP deadline is 3rd August,
> 2012.
> >>>>>>>>
> >>>>>>> Yes I am interested ...
> >>>>>>>
> >>>>>>> Should we aim for a Stanbol overview talk or rather concentrate on
> -
> >>>>>>> maybe several - specific features/components
> >>>>>>>
> >>>>>>> best
> >>>>>>> Rupert
> >>>>>>>
> >>>>>>>> Is there any interest from other committers submit a talk?
> >>>>>>>>
> >>>>>>>> Best,
> >>>>>>>> - Fabian
> >>>>>>>>
> >>>>>>>> 2012/7/17 Fabian Christ <ch...@googlemail.com>:
> >>>>>>>>> Hi,
> >>>>>>>>>
> >>>>>>>>> the call for papers and talks for the upcoming ApacheCon EU is
> open
> >>>>>>>>>
> >>>>>>>>> http://www.apachecon.eu/cfp/
> >>>>>>>>>
> >>>>>>>>> I would be interested in submitting a paper/talk about Stanbol.
> >>>>>>>>> Perhaps we should start to collect ideas here. Anyone else here
> >>>>>>>>> interested in writing something?
> >>>>>>>>>
> >>>>>>>>> Best,
> >>>>>>>>> - Fabian
> >>>>>>>>>
> >>>>>>>>> --
> >>>>>>>>> Fabian
> >>>>>>>>> http://twitter.com/fctwitt
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> --
> >>>>>>>> Fabian
> >>>>>>>> http://twitter.com/fctwitt
> >>>>>>>
> >>>>>>>
> >>>>>>> --
> >>>>>>> | Rupert Westenthaler rupert.westenthaler@gmail.com
> >>>>>>> | Bodenlehenstraße 11
> ++43-699-11108907
> >>>>>>> | A-5500 Bischofshofen
> >>>>>>>
> >>>>>
> >>>>>
> >>>>
> >>>
> >>>
> >>>
> >>> --
> >>> Fabian
> >>> http://twitter.com/fctwitt
> >>
> >> Sebastian
> >> --
> >> | Dr. Sebastian Schaffert
> sebastian.schaffert@salzburgresearch.at
> >> | Salzburg Research Forschungsgesellschaft
> http://www.salzburgresearch.at
> >> | Head of Knowledge and Media Technologies Group +43 662 2288
> 423
> >> | Jakob-Haringer Strasse 5/II
> >> | A-5020 Salzburg
> >>
> >>
>
> Sebastian
> --
> | Dr. Sebastian Schaffert sebastian.schaffert@salzburgresearch.at
> | Salzburg Research Forschungsgesellschaft http://www.salzburgresearch.at
> | Head of Knowledge and Media Technologies Group +43 662 2288 423
> | Jakob-Haringer Strasse 5/II
> | A-5020 Salzburg
>
>
Re: ApacheCon EU CFP is open
Posted by Sebastian Schaffert <se...@salzburgresearch.at>.
Hi Tommaso,
I have worked a bit with Clerezza in the context of Stanbol. While I can see the advantages of being triple-store agnostic and having a large OSGi infrastructure already in place, currently we do not intend to base the implementation on Clerezza. There are a number of reasons for this:
- we implement a reasoning and a versioning functionality that require low-level access to the triple store to be efficient; this would mean that we rather implement a triple store implementation beneath Sesame or Jena and use these APIs than the other way round; since both are considered "killer-features" by many users, I would not like to remove this functionality
- the Linked Data Server should be capable of handling hundreds of millions or even billions of triples (our current biggest productive scenario has around 140 million triples) and efficiently run queries (SPARQL) over this dataset; an intermediate layer in the way implemented by Clerezza is not suitable for this (running efficient SPARQL queries requires translating them into queries on the storage layer - e.g. SQL - and cannot be done on top of the API level)
- Clerezza essentially provides YET ANOTHER API for managing triples; consequence: developers need to learn its specifics, the new API needs to be fire-proven again even though the other two (Sesame and Jena) are already established, the existing standards (SPARQL query+update, various RDF serialization formats, …) need to be implemented yet-again
At the moment, our implementation builds mostly on the Sesame API because it is in our opinion by far the cleanest existing API for working with RDF (in fact, I consider it very well thought out and consistent, I have worked with both Sesame and Jena for many years). This is of course not a hard constraint, but for the time being I would keep it like this to avoid unnecessary additional effort. In the future, however, it might make sense to use Clerezza as a "middle layer" inbetween our low-level and our high-level functionalities (depending on how Clerezza itself develops).
If you want to, we can discuss this also at ApacheCon, perhaps I am missing something. ;-)
Greetings,
Sebastian
Am 02.08.2012 um 11:11 schrieb Tommaso Teofili:
> Hi Sebastian,
>
> that looks very good, reading your idea of a proposal (which I like) I am
> wondering what do you think about using / extending Apache Clerezza as the
> basic infrastructure for that.
> Reasons for that would be: it's triple store agnostic (and extensible), can
> "offer" REST interfaces for the underlying data, Stanbol is based on it.
> Surely it should be improved for scalability purposes (i.e. building a
> cluster of Clerezza instances).
>
> Thanks for sharing your nice proposal.
> Looking forward to meet you at the ApacheCon.
> Cheers,
> Tommaso
>
> 2012/8/2 Sebastian Schaffert <se...@salzburgresearch.at>
>
>> Dear all,
>>
>> Rupert and I would also like to propose a presentation about a "Apache
>> Linked Data Server", which could continue the work we have so far been
>> doing in the integration of our Linked Media Framework and Apache Stanbol.
>> The idea here would that we submit significant parts of the LMF as an
>> Apache incubator proposal that would closely integrate with Stanbol, which
>> could eventually result in the mentioned "Apache Linked Data Server".
>>
>> Why would this be useful? More and more institutions participate in "open
>> data" initiatives, but open data currently mostly means simply publishing a
>> CSV or XLS file on a Web server. Semantic Web technology and Linked Data
>> would offer much better interoperability, but if you really plan to publish
>> data, the amount of work required is significant (e.g. setting up a
>> Virtuoso server) and does not integrate so well with other technologies
>> that are in use in institutions. An Open Source Apache project that could
>> be deployed easily would make it much easier, especially for public
>> institutions or small enterprises, to offer their data publically.
>>
>> I have some screencasts already on how this works with the LMF:
>>
>> http://code.google.com/p/lmf/
>>
>> And we would like to discuss in what form it would make sense to transform
>> this into an Apache project. The presentation at ApacheCon could be a first
>> presentation of this idea.
>>
>> Greetings,
>>
>> Sebastian
>>
>> Am 02.08.2012 um 09:11 schrieb Fabian Christ:
>>
>>> Hi,
>>>
>>> I do not know how many presentation will be potentially accepted. I
>>> would assume that there is not that much room for more than one
>>> presentation from each podling but that is just a guess. We will see.
>>>
>>> Okay then, I will submit a proposal for an overview talk about Stanbol
>>> which is lead by use cases and scenarios where Stanbol may be a
>>> helpful framework for people, as Tommaso suggested.
>>>
>>> Best,
>>> - Fabian
>>>
>>> 2012/7/31 Suat Gonul <su...@gmail.com>:
>>>> Hi all,
>>>>
>>>> I can submit a presentation about the Contenthub. It's mainly about
>>>> Contenthub, but it also includes Enhancer, Entityhub and CMS Adapter
>>>> components. The use case may be similar to our previously ehealth
>>>> demonstration [1]. In terms of its content, it may well suit after
>>>> Rupert's presentation. So, the use case may be as follows:
>>>>
>>>> * A content administrator would configure a few healthcare datasets
>>>> as Referenced/Managed Sites based on the indexing facilities of
>>>> Entityhub.
>>>> * He would configure KeywordLinkingEngine's associated with those
>>>> Sites to be able to do health domain specific enhancements.
>>>> * After analyzing the details of the external datasets, he defines
>>>> an LDPath which is compatible with the external datasets. This
>>>> LDPath is used as the configuration of a Solr based SemanticIndex.
>>>> * In the next step, the admin configures a CMS Adapter based Store
>>>> associated with his workspace in the CMS.
>>>> * When he creates/updates document on the CMS, the Store keeps track
>>>> of the changes on the CMS documents and enhance them automatically.
>>>> * The LDPath based SemanticIndex becomes aware of the changes in the
>>>> Store and indexes the documents according to its LDPath
>>>> configuration. In this process, it also gathers additional
>>>> information from the external datasets for the named entities
>>>> recognized in the documents from the ManagedSites associated with
>>>> the external datasets.
>>>> * As a result, the admin would have a semantically enhanced Solr
>>>> index considering in terms health domain and he can use the index
>>>> directly through its RESTful API.
>>>>
>>>> I hope the use case is clear. What do you think?
>>>>
>>>> Best,
>>>> Suat
>>>>
>>>> [1] http://www.youtube.com/watch?v=l7n6aRFcn1U
>>>>
>>>>
>>>> On 07/31/2012 11:40 AM, Rupert Westenthaler wrote:
>>>>> Hi,
>>>>>
>>>>> I think I will go than for a presentation about how to use the Stanbol
>>>>> Enhancer to link Linked Data Entities.
>>>>>
>>>>> * Intro
>>>>> * NER vs. KeywordExtraction (typical Chain configurations, used
>>>>> Enhancement Engines
>>>>> * Indexing Datasets for the Entityhub
>>>>> * Managing Entities via the RESTful Interface (Entityhub Managed Sites)
>>>>>
>>>>> This assumes that there is also a more general overview about Stanbol
>>>>> and the Stanbol Enhancer - hoping @Fabian for that.
>>>>>
>>>>> WDYT
>>>>> best
>>>>> Rupert Westenthaler
>>>>>
>>>>> On Thu, Jul 26, 2012 at 3:47 PM, Tommaso Teofili
>>>>> <to...@gmail.com> wrote:
>>>>>> In my opinion starting from a real use case which demonstrates a
>> subset of
>>>>>> the whole set of features is a good way of catching audience's
>> attention.
>>>>>> My 2 cents,
>>>>>> Tommaso
>>>>>>
>>>>>> 2012/7/26 Rupert Westenthaler <ru...@gmail.com>
>>>>>>
>>>>>>> On Thu, Jul 26, 2012 at 11:04 AM, Fabian Christ
>>>>>>> <ch...@googlemail.com> wrote:
>>>>>>>> Hi,
>>>>>>>>
>>>>>>>> I just want to point out that the CFP deadline is 3rd August, 2012.
>>>>>>>>
>>>>>>> Yes I am interested ...
>>>>>>>
>>>>>>> Should we aim for a Stanbol overview talk or rather concentrate on -
>>>>>>> maybe several - specific features/components
>>>>>>>
>>>>>>> best
>>>>>>> Rupert
>>>>>>>
>>>>>>>> Is there any interest from other committers submit a talk?
>>>>>>>>
>>>>>>>> Best,
>>>>>>>> - Fabian
>>>>>>>>
>>>>>>>> 2012/7/17 Fabian Christ <ch...@googlemail.com>:
>>>>>>>>> Hi,
>>>>>>>>>
>>>>>>>>> the call for papers and talks for the upcoming ApacheCon EU is open
>>>>>>>>>
>>>>>>>>> http://www.apachecon.eu/cfp/
>>>>>>>>>
>>>>>>>>> I would be interested in submitting a paper/talk about Stanbol.
>>>>>>>>> Perhaps we should start to collect ideas here. Anyone else here
>>>>>>>>> interested in writing something?
>>>>>>>>>
>>>>>>>>> Best,
>>>>>>>>> - Fabian
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Fabian
>>>>>>>>> http://twitter.com/fctwitt
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> Fabian
>>>>>>>> http://twitter.com/fctwitt
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> | Rupert Westenthaler rupert.westenthaler@gmail.com
>>>>>>> | Bodenlehenstraße 11 ++43-699-11108907
>>>>>>> | A-5500 Bischofshofen
>>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> Fabian
>>> http://twitter.com/fctwitt
>>
>> Sebastian
>> --
>> | Dr. Sebastian Schaffert sebastian.schaffert@salzburgresearch.at
>> | Salzburg Research Forschungsgesellschaft http://www.salzburgresearch.at
>> | Head of Knowledge and Media Technologies Group +43 662 2288 423
>> | Jakob-Haringer Strasse 5/II
>> | A-5020 Salzburg
>>
>>
Sebastian
--
| Dr. Sebastian Schaffert sebastian.schaffert@salzburgresearch.at
| Salzburg Research Forschungsgesellschaft http://www.salzburgresearch.at
| Head of Knowledge and Media Technologies Group +43 662 2288 423
| Jakob-Haringer Strasse 5/II
| A-5020 Salzburg
Re: ApacheCon EU CFP is open
Posted by Tommaso Teofili <to...@gmail.com>.
Hi Sebastian,
that looks very good, reading your idea of a proposal (which I like) I am
wondering what do you think about using / extending Apache Clerezza as the
basic infrastructure for that.
Reasons for that would be: it's triple store agnostic (and extensible), can
"offer" REST interfaces for the underlying data, Stanbol is based on it.
Surely it should be improved for scalability purposes (i.e. building a
cluster of Clerezza instances).
Thanks for sharing your nice proposal.
Looking forward to meet you at the ApacheCon.
Cheers,
Tommaso
2012/8/2 Sebastian Schaffert <se...@salzburgresearch.at>
> Dear all,
>
> Rupert and I would also like to propose a presentation about a "Apache
> Linked Data Server", which could continue the work we have so far been
> doing in the integration of our Linked Media Framework and Apache Stanbol.
> The idea here would that we submit significant parts of the LMF as an
> Apache incubator proposal that would closely integrate with Stanbol, which
> could eventually result in the mentioned "Apache Linked Data Server".
>
> Why would this be useful? More and more institutions participate in "open
> data" initiatives, but open data currently mostly means simply publishing a
> CSV or XLS file on a Web server. Semantic Web technology and Linked Data
> would offer much better interoperability, but if you really plan to publish
> data, the amount of work required is significant (e.g. setting up a
> Virtuoso server) and does not integrate so well with other technologies
> that are in use in institutions. An Open Source Apache project that could
> be deployed easily would make it much easier, especially for public
> institutions or small enterprises, to offer their data publically.
>
> I have some screencasts already on how this works with the LMF:
>
> http://code.google.com/p/lmf/
>
> And we would like to discuss in what form it would make sense to transform
> this into an Apache project. The presentation at ApacheCon could be a first
> presentation of this idea.
>
> Greetings,
>
> Sebastian
>
> Am 02.08.2012 um 09:11 schrieb Fabian Christ:
>
> > Hi,
> >
> > I do not know how many presentation will be potentially accepted. I
> > would assume that there is not that much room for more than one
> > presentation from each podling but that is just a guess. We will see.
> >
> > Okay then, I will submit a proposal for an overview talk about Stanbol
> > which is lead by use cases and scenarios where Stanbol may be a
> > helpful framework for people, as Tommaso suggested.
> >
> > Best,
> > - Fabian
> >
> > 2012/7/31 Suat Gonul <su...@gmail.com>:
> >> Hi all,
> >>
> >> I can submit a presentation about the Contenthub. It's mainly about
> >> Contenthub, but it also includes Enhancer, Entityhub and CMS Adapter
> >> components. The use case may be similar to our previously ehealth
> >> demonstration [1]. In terms of its content, it may well suit after
> >> Rupert's presentation. So, the use case may be as follows:
> >>
> >> * A content administrator would configure a few healthcare datasets
> >> as Referenced/Managed Sites based on the indexing facilities of
> >> Entityhub.
> >> * He would configure KeywordLinkingEngine's associated with those
> >> Sites to be able to do health domain specific enhancements.
> >> * After analyzing the details of the external datasets, he defines
> >> an LDPath which is compatible with the external datasets. This
> >> LDPath is used as the configuration of a Solr based SemanticIndex.
> >> * In the next step, the admin configures a CMS Adapter based Store
> >> associated with his workspace in the CMS.
> >> * When he creates/updates document on the CMS, the Store keeps track
> >> of the changes on the CMS documents and enhance them automatically.
> >> * The LDPath based SemanticIndex becomes aware of the changes in the
> >> Store and indexes the documents according to its LDPath
> >> configuration. In this process, it also gathers additional
> >> information from the external datasets for the named entities
> >> recognized in the documents from the ManagedSites associated with
> >> the external datasets.
> >> * As a result, the admin would have a semantically enhanced Solr
> >> index considering in terms health domain and he can use the index
> >> directly through its RESTful API.
> >>
> >> I hope the use case is clear. What do you think?
> >>
> >> Best,
> >> Suat
> >>
> >> [1] http://www.youtube.com/watch?v=l7n6aRFcn1U
> >>
> >>
> >> On 07/31/2012 11:40 AM, Rupert Westenthaler wrote:
> >>> Hi,
> >>>
> >>> I think I will go than for a presentation about how to use the Stanbol
> >>> Enhancer to link Linked Data Entities.
> >>>
> >>> * Intro
> >>> * NER vs. KeywordExtraction (typical Chain configurations, used
> >>> Enhancement Engines
> >>> * Indexing Datasets for the Entityhub
> >>> * Managing Entities via the RESTful Interface (Entityhub Managed Sites)
> >>>
> >>> This assumes that there is also a more general overview about Stanbol
> >>> and the Stanbol Enhancer - hoping @Fabian for that.
> >>>
> >>> WDYT
> >>> best
> >>> Rupert Westenthaler
> >>>
> >>> On Thu, Jul 26, 2012 at 3:47 PM, Tommaso Teofili
> >>> <to...@gmail.com> wrote:
> >>>> In my opinion starting from a real use case which demonstrates a
> subset of
> >>>> the whole set of features is a good way of catching audience's
> attention.
> >>>> My 2 cents,
> >>>> Tommaso
> >>>>
> >>>> 2012/7/26 Rupert Westenthaler <ru...@gmail.com>
> >>>>
> >>>>> On Thu, Jul 26, 2012 at 11:04 AM, Fabian Christ
> >>>>> <ch...@googlemail.com> wrote:
> >>>>>> Hi,
> >>>>>>
> >>>>>> I just want to point out that the CFP deadline is 3rd August, 2012.
> >>>>>>
> >>>>> Yes I am interested ...
> >>>>>
> >>>>> Should we aim for a Stanbol overview talk or rather concentrate on -
> >>>>> maybe several - specific features/components
> >>>>>
> >>>>> best
> >>>>> Rupert
> >>>>>
> >>>>>> Is there any interest from other committers submit a talk?
> >>>>>>
> >>>>>> Best,
> >>>>>> - Fabian
> >>>>>>
> >>>>>> 2012/7/17 Fabian Christ <ch...@googlemail.com>:
> >>>>>>> Hi,
> >>>>>>>
> >>>>>>> the call for papers and talks for the upcoming ApacheCon EU is open
> >>>>>>>
> >>>>>>> http://www.apachecon.eu/cfp/
> >>>>>>>
> >>>>>>> I would be interested in submitting a paper/talk about Stanbol.
> >>>>>>> Perhaps we should start to collect ideas here. Anyone else here
> >>>>>>> interested in writing something?
> >>>>>>>
> >>>>>>> Best,
> >>>>>>> - Fabian
> >>>>>>>
> >>>>>>> --
> >>>>>>> Fabian
> >>>>>>> http://twitter.com/fctwitt
> >>>>>>
> >>>>>>
> >>>>>> --
> >>>>>> Fabian
> >>>>>> http://twitter.com/fctwitt
> >>>>>
> >>>>>
> >>>>> --
> >>>>> | Rupert Westenthaler rupert.westenthaler@gmail.com
> >>>>> | Bodenlehenstraße 11 ++43-699-11108907
> >>>>> | A-5500 Bischofshofen
> >>>>>
> >>>
> >>>
> >>
> >
> >
> >
> > --
> > Fabian
> > http://twitter.com/fctwitt
>
> Sebastian
> --
> | Dr. Sebastian Schaffert sebastian.schaffert@salzburgresearch.at
> | Salzburg Research Forschungsgesellschaft http://www.salzburgresearch.at
> | Head of Knowledge and Media Technologies Group +43 662 2288 423
> | Jakob-Haringer Strasse 5/II
> | A-5020 Salzburg
>
>
Re: ApacheCon EU CFP is open
Posted by Sebastian Schaffert <se...@salzburgresearch.at>.
Dear all,
Rupert and I would also like to propose a presentation about a "Apache Linked Data Server", which could continue the work we have so far been doing in the integration of our Linked Media Framework and Apache Stanbol. The idea here would that we submit significant parts of the LMF as an Apache incubator proposal that would closely integrate with Stanbol, which could eventually result in the mentioned "Apache Linked Data Server".
Why would this be useful? More and more institutions participate in "open data" initiatives, but open data currently mostly means simply publishing a CSV or XLS file on a Web server. Semantic Web technology and Linked Data would offer much better interoperability, but if you really plan to publish data, the amount of work required is significant (e.g. setting up a Virtuoso server) and does not integrate so well with other technologies that are in use in institutions. An Open Source Apache project that could be deployed easily would make it much easier, especially for public institutions or small enterprises, to offer their data publically.
I have some screencasts already on how this works with the LMF:
http://code.google.com/p/lmf/
And we would like to discuss in what form it would make sense to transform this into an Apache project. The presentation at ApacheCon could be a first presentation of this idea.
Greetings,
Sebastian
Am 02.08.2012 um 09:11 schrieb Fabian Christ:
> Hi,
>
> I do not know how many presentation will be potentially accepted. I
> would assume that there is not that much room for more than one
> presentation from each podling but that is just a guess. We will see.
>
> Okay then, I will submit a proposal for an overview talk about Stanbol
> which is lead by use cases and scenarios where Stanbol may be a
> helpful framework for people, as Tommaso suggested.
>
> Best,
> - Fabian
>
> 2012/7/31 Suat Gonul <su...@gmail.com>:
>> Hi all,
>>
>> I can submit a presentation about the Contenthub. It's mainly about
>> Contenthub, but it also includes Enhancer, Entityhub and CMS Adapter
>> components. The use case may be similar to our previously ehealth
>> demonstration [1]. In terms of its content, it may well suit after
>> Rupert's presentation. So, the use case may be as follows:
>>
>> * A content administrator would configure a few healthcare datasets
>> as Referenced/Managed Sites based on the indexing facilities of
>> Entityhub.
>> * He would configure KeywordLinkingEngine's associated with those
>> Sites to be able to do health domain specific enhancements.
>> * After analyzing the details of the external datasets, he defines
>> an LDPath which is compatible with the external datasets. This
>> LDPath is used as the configuration of a Solr based SemanticIndex.
>> * In the next step, the admin configures a CMS Adapter based Store
>> associated with his workspace in the CMS.
>> * When he creates/updates document on the CMS, the Store keeps track
>> of the changes on the CMS documents and enhance them automatically.
>> * The LDPath based SemanticIndex becomes aware of the changes in the
>> Store and indexes the documents according to its LDPath
>> configuration. In this process, it also gathers additional
>> information from the external datasets for the named entities
>> recognized in the documents from the ManagedSites associated with
>> the external datasets.
>> * As a result, the admin would have a semantically enhanced Solr
>> index considering in terms health domain and he can use the index
>> directly through its RESTful API.
>>
>> I hope the use case is clear. What do you think?
>>
>> Best,
>> Suat
>>
>> [1] http://www.youtube.com/watch?v=l7n6aRFcn1U
>>
>>
>> On 07/31/2012 11:40 AM, Rupert Westenthaler wrote:
>>> Hi,
>>>
>>> I think I will go than for a presentation about how to use the Stanbol
>>> Enhancer to link Linked Data Entities.
>>>
>>> * Intro
>>> * NER vs. KeywordExtraction (typical Chain configurations, used
>>> Enhancement Engines
>>> * Indexing Datasets for the Entityhub
>>> * Managing Entities via the RESTful Interface (Entityhub Managed Sites)
>>>
>>> This assumes that there is also a more general overview about Stanbol
>>> and the Stanbol Enhancer - hoping @Fabian for that.
>>>
>>> WDYT
>>> best
>>> Rupert Westenthaler
>>>
>>> On Thu, Jul 26, 2012 at 3:47 PM, Tommaso Teofili
>>> <to...@gmail.com> wrote:
>>>> In my opinion starting from a real use case which demonstrates a subset of
>>>> the whole set of features is a good way of catching audience's attention.
>>>> My 2 cents,
>>>> Tommaso
>>>>
>>>> 2012/7/26 Rupert Westenthaler <ru...@gmail.com>
>>>>
>>>>> On Thu, Jul 26, 2012 at 11:04 AM, Fabian Christ
>>>>> <ch...@googlemail.com> wrote:
>>>>>> Hi,
>>>>>>
>>>>>> I just want to point out that the CFP deadline is 3rd August, 2012.
>>>>>>
>>>>> Yes I am interested ...
>>>>>
>>>>> Should we aim for a Stanbol overview talk or rather concentrate on -
>>>>> maybe several - specific features/components
>>>>>
>>>>> best
>>>>> Rupert
>>>>>
>>>>>> Is there any interest from other committers submit a talk?
>>>>>>
>>>>>> Best,
>>>>>> - Fabian
>>>>>>
>>>>>> 2012/7/17 Fabian Christ <ch...@googlemail.com>:
>>>>>>> Hi,
>>>>>>>
>>>>>>> the call for papers and talks for the upcoming ApacheCon EU is open
>>>>>>>
>>>>>>> http://www.apachecon.eu/cfp/
>>>>>>>
>>>>>>> I would be interested in submitting a paper/talk about Stanbol.
>>>>>>> Perhaps we should start to collect ideas here. Anyone else here
>>>>>>> interested in writing something?
>>>>>>>
>>>>>>> Best,
>>>>>>> - Fabian
>>>>>>>
>>>>>>> --
>>>>>>> Fabian
>>>>>>> http://twitter.com/fctwitt
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Fabian
>>>>>> http://twitter.com/fctwitt
>>>>>
>>>>>
>>>>> --
>>>>> | Rupert Westenthaler rupert.westenthaler@gmail.com
>>>>> | Bodenlehenstraße 11 ++43-699-11108907
>>>>> | A-5500 Bischofshofen
>>>>>
>>>
>>>
>>
>
>
>
> --
> Fabian
> http://twitter.com/fctwitt
Sebastian
--
| Dr. Sebastian Schaffert sebastian.schaffert@salzburgresearch.at
| Salzburg Research Forschungsgesellschaft http://www.salzburgresearch.at
| Head of Knowledge and Media Technologies Group +43 662 2288 423
| Jakob-Haringer Strasse 5/II
| A-5020 Salzburg