Open Linked Data and SPARQL development within governmental organizations


(Martijn Hartog) #1

We are currently exploring the possibilities for the Semantic Web and Open Linked Data, aiming for public questions / queries on Information Systems (e.g. Council Information System of Municipalities). We now have two computer science students who are realizing SPARQL endpoints en matching them with public governmental ontologies and are looking for somebody who is experienced with the connection with SQL en Open Linked Data.


(Bernhard Krabina) #2

I am not experienced with SPARQL endpoints, but can give you two tips:

  1. Semantic MediaWiki (SMW) www.semantic-mediawiki.org stores the structured data of a wiki in a SQL database and has built-in support of connecting to a triplestore. So basically, you can set up arbitrary data structures in SMW and have the wiki store the data (not the wiki text) additionally in a triplestore. See more at https://www.semantic-mediawiki.org/wiki/Help:Using_SPARQL_and_RDF_stores
  2. Semantic Web Company have experience in setting up triple stores, etc.: https://www.semantic-web.at/

(Andrei Sambra) #3

Are you just looking for advice or do you want to hire someone? Also, do you have a document that highlights the technical requirements for your architecture? This would help shed some light on why you plan to use SPARQL and/or SQL.


(Jim Hendler) #4

Here are some resources that might be helpful -these are books that include principles but also many examples and exercises
General principles of Linked Data: http://www.morganclaypool.com/doi/abs/10.2200/S00334ED1V01Y201102WBE001 (this is a short book that outlines when linked data is useful and some basic principles)
Using it effectively: https://www.amazon.com/Semantic-Web-Working-Ontologist-Second/dp/0123859654/ref=dp_ob_title_bk
SPARQL per se: https://www.amazon.com/Learning-SPARQL-Bob-DuCharme/dp/1449371434/ref=sr_1_1?ie=UTF8&qid=1476394910&sr=8-1&keywords=learning+sparql
With respect to use in government, there are a number of papers around - the IEEE Intelligent Systems magazine had a special issue on Open Data in govt systems that included a few papers on RDF/SPARQL (http://ieeexplore.ieee.org/xpl/tocresult.jsp?isnumber=6237448)
The basic advantage of SPARQL and triple stores for linked data are those of graph data bases coupled with the Web architecture.
Of more recent vintage and gaining in popularity is JSON-LD (http://json-ld.org/) which will be covered in the 3rd edition of “Semantic Web for the Working Ontologist” - but we haven’t finished writing it yet :slight_smile:

In terms of finding people, there is a yearly International Semantic Web Conference (ISWC), a second yearly conference that tends to focus on the European area but has many US participants (ESWC) and a track in the World Wide Web conference on Semantic Web (or more recently Semantics and Data) – these conferences all attract many students who know these technologies and will be seeking jobs (although you do compete with industry - as many of them are hired to work on knowledge graph technologies in the search and social networking industries - both of which heavily use the semantic web concepts).

Full disclosure: I was the series editor for the first reference (Heath and Bizer) and co-author of the second.