On Fri, Oct 9, 2009 at 11:23 PM, abstract things
<abstractthi...@gmail.com>wrote:

> Hello All,
>
> My name is Sundar and I am Senior Python programming language user [?] (I 
> mean 3+ years). I like Python programming. Well, I haven't registered for 
> PyCon early enough but I attended Mayavi, Algorithms and Semantic Web talk. 
> Wanted to attend many other interesting talks as well but time didn't permit 
> me. So following some of the online material now.
>
> I also have very much interest in Semantic Web but I some how don't agree 
> with the Anand's post. No offence Anand. I am following Semantic Web since 
> 2005 onwards (soon after the SPARQL draft was out) and have been active 
> member in online Semantic Web groups. Open Calais is a Web service which 
> stores data/information with Semantics. When we access Open Calais store by 
> its APIs, what we get in return is JSON format (may be others as well, I 
> haven't explored much its API) results with entity and value etc. But that is 
> something like taking data out from your database after sending a query. If 
> somebody follows WordNet and NLP can figure it out with document 
> classification algorithms that the particular text you are sending to Open 
> Calais has what semantics associated (associated Nouns, Verbs e.g. Person, 
> place, actions, class of the text i.e. sports, politics, history etc).
>
> Arranging this information on our webpage or blog is not the Semantic Web. I 
> would call it as fetching data from a Semantic Data store and arranging it on 
> our webpages so that Search engines can find it in better manner or we can 
> have quality or enriched information on our webpages (one can use RDFa). 
> Semantic Web is what happening inside Open Calais along with other 
> Linguistics based features for extracting meaning of the data we send or ask 
> through API. And no way anybody can call this as ONTOLOGY. Ontologies are 
> like domain modelling, a hard thing). Ontologies are inside thing of Open 
> Calais. What we get out from their data store is not an Ontology. Its simply 
> the data with semantics we are getting (just the relationships without 
> actually knowing the domain model built inside). We no way have any knowledge 
> of how the data inside Open Calais is stored and what their ontology for a 
> particular domain is (Something similar to getting results out from a 
> database without knowing what the internal schema is).
>
> Semantic Web basic concept has RDF (which is in turn an XML based standard). 
> What that guy in PyCon showed in his presentation was a direction to think 
> about Semantic Web if you yourself is building some Semantic Web based system 
> (eg. if your company wants to launch some online system with Semantic Web 
> features then you can have your domain vocabulary defined and accessible 
> using a URL, also how the RDF statements can be made, what are the best 
> practices for making such statements etc). His talk was more of focused on 
> large Enterprise systems and integrations compared to using Semantic Web for 
> Web page based data annotation. (Micro formats is not the part of W3C based 
> Semantic Web protocol stack).
>
> Based on my limited knowledge, RDFa and GRDDL are the two standards from W3C 
> that can be used for Web content annotation and the RDFLib (that guy used 
> this library in his practical Python examples if you remember) can generate 
> RDFa documents from the triples you have in your datastore (see his last 3 or 
> 4 slides). RDF based XML documents can be generated from a Web application or 
> an enterprise application for semantic based data exchange.
>
> Well, my thoughts here are not to argue on any thing but to give a picture of 
> Semantic Web from my acquired knowledge in last 4or so years. (and also the 
> perspective of that guy as I observed).
>
> I guess it would have been more interesting if that guy would have given few 
> examples of using Description Logic to describe data relationship and how OWL 
> fits into that model and also about Stanford's Semantic Web Protege editor or 
> some other editors for designing Ontologies. I guess it requires more than 45 
> min.
>
> Nevertheless, his talk was satisfying for me, may be because I already had 
> background knowledge of this subject.
>
>
> Regards,
>
> Sundar
>
>
>
> On Fri, Oct 9, 2009 at 4:48 PM, Arvind Jamuna Dixit <ardsrk at gmail.com 
> <http://mail.python.org/mailman/listinfo/inpycon>>wrote:
>
> >* Semantic web and python. Pretty cool stuff. I am interested.*
>
>  Cool. Here is a brief of what I want to present.
>
>  Anyone who attended the talk on Semantic web in Pycon would have
>  understood something about the "theorotical" semantic web as
>  visualized by W3C.
>
>  This is however a top-down approach which requires annotating
>  web-pages with metadata such as RDF, microformats etc.
>
>  However a more practical approach is extracting
>  semantic content namely ontologies and relationships from existing
>  web content. Such services are already becoming available.
>
>  I will be demonstrating such a web-service namely "OpenCalais"
>  by Reuters and how to use it in Python to develop some applications
>  using the rich semantic data returned by the service.
>
>  The whole session will be interactive and about showing running
>  Python code, and will last from 45min - 1 hour.
>
>
>
I am sorry, but I decided not to present this talk tomorrow. I had thought
of presenting OpenCalais as an example of top down semantic web but
with some prejudices already about the topic, I think I will be better
off with presenting something more than just that.

I am working on an idea which I have to use the service to build up
a semantic web application which uses OpenCalais to extract
data and present it via other web 3.0 services. However it won't
be ready by tomorrow and I dont have the time to hack something
up quick. Next week-end I will have something to present on this
and I think it will be better to present everything together than
piece by piece.

So this talk is canceled tomorrow. Let us have the PyCon
follow-up discussions.

<<330.gif>>

_______________________________________________
BangPypers mailing list
BangPypers@python.org
http://mail.python.org/mailman/listinfo/bangpypers

Reply via email to