Re: a list of companies active in the semantic technology area

bOWLing alleys (seriously, we have such a class in the Yelp taxonomy we 
were discussing with you), and restaurants serving guinea fOWL are 
semantics companies now? ;)

Barry


On 22/12/2010 18:28, Martin Hepp wrote:
> Hi all:
>
> Apologies for my late reply, end of term season ;-)
>
> It is very easy to create and maintain such a directory based on 
> GoodRelations - actually, the following should already work pretty 
> well as of today :
>
> 1. A company describes its range of products and services using 
> GoodRelations, e.g. using the GoodRelations   Annotator
>
> http://www.ebusiness-unibw.org/tools/goodrelations-annotator/
>
> Many SW companies have done so already, e.g.
>
>     http://www.franz.com/goodrelations.rdf
>
> 2. The site informs one or more RDF repositories / crawlers of that 
> data, e.g. sindice.com or Ping The Semantic Web so that they can crawl 
> and collate the data.
>
> 3. Rund a query for matching companies against a suitable SPARQL endpoint
>
> See an example query below. The query may not yet be perfect, because 
> testing them on
>
>    http://loc.openlinksw.com/sparql
>    http://lod.openlinksw.com/sparql
>    http://uriburner.com/sparql
>
> currently yields an error message
>
> "37000 Error SQ156: Internal Optimized compiler error : dt not found 
> based on cname in sqlo.c:1078."
> which I do not understand, so I cannot quickly spot whether it's the 
> query or the endpoint.
>
> The basic pattern would be to
> - search for gr:BusinessEntities
> - that make at least one gr:Offering that is related to semantic 
> technology.
>
> The latter can be expressed - approximately - by
>
> - checking for the words
>
> "semantic", "RDF", "ontolog", "OWL", "triplestore", or "linked data"
>
> - in the textual elements attached to the gr:Offering or
> - the textual elements of a product or product model linked to that 
> offer via gr:includes, and also
> - considering  gr:Offering nodes that include objects that are 
> instances of subclasses of gr:ProductOrService that contain one of 
> these words in the class name, or in its superclasses class names.
>
> Nice example for a typical hybrid SPARQL query in a real world setting 
> ;-)
>
> Best
>
> Martin
>
>
> # List all companies that sell/lease/maintain etc. semantic technology
>
> SELECT ?c ?page ?legalname WHERE
> {
>   ?c a gr:BusinessEntity .
>   ?c gr:legalName ?legalname .
>   OPTIONAL { ?c foaf:page ?page }
>   ?c gr:offers ?o .
>
> # Now we have to check that they sell something "semantic"
> # Option 1: The offering contains "semantic", "RDF", "ontolog", "OWL", 
> "triplestore", or "linked data"
>   {
>     { ?o ?textprop ?text . }
>     UNION
> # Option 2: The product or product class contains one of those words
>      {
>       {
>           { ?o gr:includes ?product. }
>            UNION
>           { ?o gr:includesObject ?t .
>             ?t a gr:TypeAndQuantityNode .
>             ?t gr:typeOfGood ?product .
>         }
> # The UNION pattern above is because we cannot assume that the 
> expansion of gr:includes is materialized in triples
> # See 
> http://www.ebusiness-unibw.org/wiki/GoodRelationsOptionalAxiomsAndLinks
>       }
> # Option 2a: The product contains one of those words
>       ?product ?textprop ?text .
> # Option 2b: The product is an instance of a class that contains those 
> words in their name
>       ?product a ?class .
>       ?class rdfs:subClassOf gr:ProductOrService .
>       ?class ?textprop ?text .
> # Also consider labels of superclasses
>       OPTIONAL {
>                   ?class rdfs:subClassOf ?superclass .
>                   ?superclass ?textprop ?text .}
>      }
>   }
> # Constrain the relevant text properties
>   FILTER (?textprop = rdfs:label || ?textprop = rdfs:comment || 
> ?textprop = gr:name || ?textprop = gr:description )
> # Check for significant words
>   FILTER ( bif:contains(?text, "semantic") || bif:contains(?text, 
> "RDF") ||
>       bif:contains(?text, "ontolog") || bif:contains(?text, "OWL") || 
> bif:contains(?text, "triplestore") ||
>       bif:contains(?text, "linked data") )
> }
> LIMIT 10
>
> -------------------------------------------------
> martin hepp
> e-business & web science research group
> universitaet der bundeswehr muenchen
>
> e-mail:  hepp@ebusiness-unibw.org
> phone:   +49-(0)89-6004-4217
> fax:     +49-(0)89-6004-4620
> www:     http://www.unibw.de/ebusiness/ (group)
>          http://www.heppnetz.de/ (personal)
> skype:   mfhepp
> twitter: mfhepp
>
> Check out GoodRelations for E-Commerce on the Web of Linked Data!
> =================================================================
> * Project Main Page: http://purl.org/goodrelations/
> * Quickstart Guide for Developers: http://bit.ly/quickstart4gr
> * Vocabulary Reference: http://purl.org/goodrelations/v1
> * Developer's Wiki: http://www.ebusiness-unibw.org/wiki/GoodRelations
> * Examples: http://bit.ly/cookbook4gr
> * Presentations: http://bit.ly/grtalks
> * Videos: http://bit.ly/grvideos
>
>

Received on Wednesday, 22 December 2010 21:34:04 UTC