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Update: Since December 2014, I work forTopQuadrant. This website is in dire need of a general overhaul… In the meantime, there'sLinkedIn.

Richard Cyganiak

Mini bio:: Linked data technologist at theLiDRC,DERI Galway, Ireland.
Interests:: Linked Data,RDF,data integration,Go,photography,hiking,table football
Memberships:: DERI,Linking Open Data project,Pedantic Web Group,Web Science Trust fellows.
Weblog:: dowhatimean.net
Email:: richard@cyganiak.de
Skype:: richard.cyganiak
Phone:: +353-87-2206327
IRC nick:: cygri
Home address:: 26 Dun Aengus,Galway,Ireland (Google Maps)
Work address:: Office 102,Digital Enterprise Research Institute, NUI Galway,Lower Dangan,Galway,Ireland (Google Maps)
URI:: http://richard.cyganiak.de/foaf.rdf#cygri

Web properties

Current projects

prefix.cc: A web site that simplifies a common task in the work of RDF developers: remembering and looking up URI prefixes.
Pedantic Web Group: I'm a co-founder of this group of people dedicated to fixing broken data on the Semantic Web.
RDB2RDF Working Group at W3C: I am a member of this W3C working group. It is chartered to create a specification for a language to map relational data and relational schemas to RDF and OWL.
Sig.ma: An entity search engine and browser for the Web of Data. Built with Michele Catasta and Szymon Danielczyk in theOKKAM Project. Sig.ma won 3rd prize at the 2009Semantic Web Challenge.
any23: Anything To Triples (any23) is a library,web service and command-line swiss army knife for parsing and converting RDF. The codebase is extracted fromSindice and maintained byDERI andFBK's Web of Data Research Unit.
D2RQ and D2R Server: An open-source project aimed at making relational databases part of the Web of Data. Originally founded byChris Bizer. I have maintained D2RQ and D2R Server since 2005.
Neologism: An open-source publishing platform for RDFS vocabularies. Currently in Alpha stage. I founded this project in 2008.
DBpedia: Extracting structured RDF information from Wikipedia. A large community project involving several universities and companies. I have contributed to the original extraction framework and have developed and maintained DBpedia's HTML frontend during much of 2007 and 2008.
Linking Open Data: A community effort to convert existing sources of open data to RDF an make them part of the Semantic Web. I'm a co-founder of the project, together withChris Bizer. My main contribution is in helping to establish best practices for publishing RDF on the Web, and maintaining theLOD dataset cloud diagram.
Semantic Sitemaps: A proposed standard for improving RDF discovery, originally designed byGiovanni Tummarello.
voiD: A work-in-progress RDFS vocabulary for describing the contents of RDF datasets.
Pubby: A Linked Data server that exposes RDF data from SPARQL endpoints. Originally developed for DBpedia.

Past projects

Sindice.com

An experimental search engine for the Web of Data. The project is lead byGiovanni Tummarello. I was a member from 2007 to 2009.

StatCVS/StatSVN

StatCVS generates colorful reports from CVS repository logs. I maintained the open-source project from 2002 to 2008. A port to Subversion, called StatSVN, was created by Jason Kealey and Benoit Xhenseval. They took over maintenance of StatCVS in 2008.

Disco

A simple RDF browser. Developed together with Tobias Gauß in 2006-2007.

NG4J

NG4J provided support forNamed Graphs long before this feature became standard in all RDF stores. The project was initiated by Chris Bizer in 2004, and I maintained it from 2004 to 2007.

SPARQL2SQL

An early attempt at implementing expressive SPARQL queries over a database-backed triple store. I did this as an internship project at HP Labs Bristol in 2005 under the supervision of Andy Seaborne.

WIQA

A policy framework for Web Information Quality Assurance, part ofChris Bizer's doctoral thesis. I did parts of the implementation (2005-2006).

Miscellaneous

(03/2008)Accept header test for RDF clients:Small utility service to help implementers of content negotiation
(03/2006)FOAF geolocator:Add geographic coordinates to your FOAF file
Some very old projects. Page in German.

Publications

I occasionally blog atdowhatimean.net.

There is alist of my very old publications (page in German). Once upon a time, I did some blogging in Germanhere.

Specifications and Tutorials

voiD Guide – Using the Vocabulary of Interlinked Datasets: Keith Alexander, Richard Cyganiak, Michael Hausenblas, Jun Zhao. Specification, 2009.
How to Publish Linked Data on the Web (Video, ISWC 2008): Tom Heath, Michael Hausenblas, Christian Bizer, Richard Cyganiak, Olaf Hartig. Tutorial at ISWC 2008, Karlsruhe. Published at videolectures.net.
N-Quads: Extending N-Triples with Context: Richard Cyganiak, Andreas Harth, Aidan Hogan. Specification, 2008.
Cool URIs for the Semantic Web: Leo Sauermann, Richard Cyganiak, Danny Ayers, Max Völkel. W3C Interest Group Note, 2008.
Semantic Sitemaps: A Sitemap Extension: Richard Cyganiak, Renaud Delbru, Giovanni Tummarello. Specification, 2007.
How to Publish Linked Data on the Web: Christian Bizer, Richard Cyganiak, Tom Heath. Tutorial, 2007.
Debugging Semantic Web sites with cURL: Tutorial, 2007.
The TriG Syntax: Chris Bizer, Richard Cyganiak. Specification, 2007.

Peer-reviewed and tech reports

Sig.ma: live views on the Web of Data (JWS, 2010): Giovanni Tummarello,Richard Cyganiak,Michele Catasta,Szymon Danielczyk,Renaud Delbru,Stefan Decker:Sig.ma: live views on the Web of Data.Journal of Web Semantics: Science, Services and Agents on the World Wide Web, Article in Press,2010. (doi:10.1016/j.websem.2010.08.003)
Next steps for RDF: Keep the core and pave the cowpaths (W3C Workshop: RDF Next Steps): Richard Cyganiak:Next steps for RDF: Keep the core and pave the cowpaths. In: Proceedings of theW3C Workshop on RDF Next Steps, Standord, CA,June2010. (Link)
Learning from Linked Open Data Usage: Patterns & Metrics (WebSci2010): Knud Möller,Michael Hausenblas,Richard Cyganiak,Siegfried Handschuh,Gunnar Grimnes:Learning from Linked Open Data Usage: Patterns & Metrics. In: Proceedings of theWeb Science Conference 2010, Raleigh, NC,April2010. (PDF)
Semantic Statistics: Bringing Together SDMX and SCOVO (LDOW2010): Richard Cyganiak,Simon Field,Arofan Gregory,Wolfgang Halb,Jeni Tennison:Semantic Statistics: Bringing Together SDMX and SCOVO. In: Proceedings of theLinked Data on the Web Workshop (LDOW2010), Raleigh, NC,April2010. (PDF)
Sig.ma: Live views on the Web of Data (demo at WWW2010): Giovanni Tummarello,Richard Cyganiak,Michele Catasta,Szymon Danielczyk,Renaud Delbru,Stefan Decker:Sig.ma: live views on the Web of Data. Demonstration at19th World Wide Web Conference (WWW2010), Raleigh, NC,April2010. (PDF)

2009

On Integration Issues of Site-Specific APIs into the Web of Data (Technical Report, 2009): Tim Berners-Lee,Richard Cyganiak,Michael Hausenblas,Joe Presbrey,Oshani Seneviratne,Oana-Elena Ureche:On Integration Issues of Site-Specific APIs into the Web of Data. Technical Report,LiDRC, DERI, NUI Galway, Ireland,October2009. (PDF)
Sig.ma: Live views on the Web of Data (SemWebChallenge 2009): Giovanni Tummarello,Richard Cyganiak,Michele Catasta,Szymon Danielczyk,Stefan Decker:Sig.ma: live views on the Web of Data. 3rd prize at theSemantic Web Challenge at ISWC2009, Washington, DC,October2009. (PDF)
Accessing Site-Speciﬁc APIs Through Write-Wrappers From The Web of Data (SemRUs-ISWC09): Oana-Elena Ureche,Aftab Iqbal,Richard Cyganiak,Michael Hausenblas:Accessing Site-Speciﬁc APIs Through Write-Wrappers From The Web of Data. In: Proceedings of theSemantics for the Rest of Us Workshop (SemRUs-ISWC09), Washington, DC,October2009. (PDF)
Towards ECSSE: live Web of Data search and integration (SemSearch2009): Michele Catasta,Richard Cyganiak,Giovanni Tummarello:Towards ECSSE: live Web of Data search and integration.Semantic Search 2009 Workshop (SemSearch2009), Madrid, Spain,April2009. (PDF)
Describing Linked Datasets (LDOW2009): Keith Alexander,Richard Cyganiak,Michael Hausenblas,Jun Zhao:Describing Linked Datasets. In: Proceedings of theLinked Data on the Web Workshop (LDOW2009), Madrid, Spain,April2009. (PDF)
Semantic Web Publishing with Drupal (Technical Report, 2009): Stéphane Corlosquet,Richard Cyganiak,Axel Polleres,Stefan Decker:Semantic Web Publishing with Drupal. DERI Technical Report2009-04-30,DERI, NUI Galway, Ireland,April2009. (PDF)
DBpedia – A Crystallization Point for the Web of Data (JWS, 2009): Christian Bizer,Jens Lehmann,Georgi Kobilarov,Sören Auer,Christian Becker,Richard Cyganiak,Sebastian Hellmann,DBpedia – A Crystallization Point for the Web of Data.Journal of Web Semantics: Science, Services and Agents on the World Wide Web,2009. (doi:10.1016/j.websem.2009.07.002)
Quality-Driven Information Filtering Using the WIQA Policy Framework (JWS, 2009): Christian Bizer,Richard Cyganiak,Quality-Driven Information Filtering Using the WIQA Policy Framework.Journal of Web Semantics: Science, Services and Agents on the World Wide Web, Volume 7, Issue 1, Pages 1-10,January2009. (doi:10.1016/j.websem.2008.02.005,PDF)

2008

Neologism – Easy Vocabulary Publishing (SFSW2008): Cosmin Basca,Stéphane Corlosquet,Richard Cyganiak,Sergio Fernández,Thomas Schandl:Neologism – Easy Vocabulary Publishing.4th Workshop on Scripting for the Semantic Web, Tenerife, Spain,June2008. (PDF)
Semantic Sitemaps – Efficient and Flexible Access to Datasets on the Semantic Web (ESWC2008): Richard Cyganiak,Holger Stenzhorn,Renaud Delbru,Stefan Decker,Giovanni Tummarello:Semantic Sitemaps – Efficient and Flexible Access to Datasets on the Semantic Web.5th European Semantic Web Conference, Tenerife, Spain,June2008. (PDF)
Browsing Linked Data with Fenfire (Demo at LDOW2008): Tuukka Hastrup,Richard Cyganiak,Uldis Bojārs:Browsing Linked Data with Fenﬁre (Demo).Workshop on Linked Data on the Web (LDOW2008), Beijing, China,April2008. (PDF)
Weaving SIOC into the Web of Linked Data (LDOW2008): Uldis Bojārs,Alexandre Passant,Richard Cyganiak,John Breslin:Weaving SIOC into the Web of Linked Data.Workshop on Linked Data on the Web (LDOW2008), Beijing, China,April2008. (PDF)
Sindice.com – A Document-oriented Lookup Index for Open Linked Data (IJMSO, 2008): Eyal Oren,Renaud Delbru,Michele Catasta,Richard CyganiakHolger Stenzhorn,Giovanni Tummarello:Sindice.com – A Document-oriented Lookup Index for Open Linked Data.International Journal of Metadata, Semantics and Ontologies, 3 (1),2008. (PDF)

2007

DBpedia – A Nucleus for a Web of Open Data (ISWC2007): Sören Auer,Christian Bizer,Georgi Kobilarov,Jens Lehmann,Richard Cyganiak,Zachary Ives:DBpedia – A Nucleus for a Web of Open Data.6th International Semantic Web Conference (ISWC 2007), Busan, Korea,November2007. (PDF)
D2RQ – Lessons Learned (W3C RdfRDB 2007): Chrisitan Bizer,Richard Cyganiak:D2RQ – Lessons Learned.W3C Workshop on RDF Access to Relational Databases, Boston, USA,October2007
DBpedia – A Nucleus for a Web of Open Data (Poster at CSSW2007): Christian Bizer,Richard Cyganiak:DBpedia – A Nucleus for a Web of Open Data (Poster).SABRE Conference on Social Semantic Web (CSSW 2007), Leipzig, Germany,September2007. (Poster)
RDF Book Mashup – From Web APIs to a Web of Data (SFSW2007): Christian Bizer,Richard Cyganiak,Tobias Gauß:The RDF Book Mashup – From Web APIs to a Web of Data.3rd Workshop on Scripting for the Semantic Web (SFSW2007), Innsbruck, Austria,June2007 (PDF)
DBpedia – Querying Wikipedia like a Database (Dev Track at WWW2007): Christian Bizer,Sören Auer,Richard Cyganiak,Georgi Kobilarov:DBpedia – Querying Wikipedia like a Database.16th International World Wide Web Conference (WWW2007), Banff, Canada,May2007.
Cool URIs for the Semantic Web (Technical Report, 2007): Leo Sauermann,Richard Cyganiak,Max Völkel:Cool URIs for the Semantic Web. DFKI Technical MemoTM-07-01,DFKI GmbH, Germany,February2007. (PDF)

2006

D2R Server – A Semantic Web Front-end to Existing Relational Databases (Poster at BXMLT2006): Richard Cyganiak,Christian Bizer:D2R Server – A Semantic Web Front-end to Existing Relational Databases (Poster).Berliner XML Tage, Berlin, Germany,September2006. (PDF) (Poster)
DODA 0.1 – An Ontology for Lightweight Integration of Semantic Data Access Technologies (SIIK2006): Giovanni Tummarello,Christian Morbidoni,Michele Nucci,Richard Cyganiak:DODA 0.1 – An Ontology for Lightweight Integration of Semantic Data Access Technologies.1st International Workshop on Semantic Information Integration on Knowledge Discovery (SIIK 2006), Yogyakarta, Indonesia,December2006. (PDF)
The DODA Ontology – Lightweight Integration of Semantic Data Access Technologies (SWAP2006): Christian Morbidoni,Giovanni Tummarello,Michele Nucci,Richard Cyganiak:The DODA Ontology – Lightweight Integration of Semantic Data Access Technologies.3rd Italian Semantic Web Workshop (SWAP 2006), Pisa, Italy,December2006. (PDF)
D2R Server – Publishing Releational Databases on the Semantic Web (Poster at ISWC2006): Christian Bizer,Richard Cyganiak:D2R Server – Publishing Releational Databases on the Semantic Web (Poster).5th International Semantic Web Conference, Athens, USA,November2006. (PDF) (Poster)
D2R Server – Publishing Relational Databases on the Web as SPARQL Endpoints (Dev Track at WWW2006): Richard Cyganiak,Christian Bizer:D2R Server – Publishing Relational Databases on the Web as SPARQL Endpoints.15th International World Wide Web Conference (WWW2006), Edinburgh, Scotland,May2006.

2005

The TriQL.P Browser – Filtering Information using Context-, Content- and Rating-Based Trust Policies (SWPW2005): Christian Bizer,Richard Cyganiak,Tobias Gauß,and Oliver Maresch:The TriQL.P Browser – Filtering Information using Context-, Content- and Rating-Based Trust Policies.Semantic Web and Policy Workshop at the 4th International Semantic Web Conference, Galway, Ireland,November2005. (PDF)
NG4J – Named Graphs API for Jena (Poster, ESWC2005): Christian Bizer,Richard Cyganiak,Rowland Watkins:NG4J – Named Graphs API for Jena (Poster).2nd European Semantic Web Conference (ESWC 2005), Heraklion, Greece,May2005. (PDF) (Poster)