Chris Bizer
Richard Cyganiak
Paul Kreis
Knud Möller

This page provides an overview about different access mechanisms to the RDF dataset
about the 5th European Semantic Web Conference (ESWC2008) and explains
how the dataset can be used within different Semantic Web applications.

Contents

  1. The Dataset
  2. Access Mechanisms
  3. Browsing the Data
  4. Querying the Data
  5. Searching the Data
  6. Adding more Data
  7. Rating Papers
  8. BibSonomy

1. The ESWC2008 Dataset

The ESWC2008 dataset provides information about papers, authors, sessions and talks at the 5th European Semantic Web Conference (ESWC2008) held in June 1-5, 2008 in Tenerife, Spain.

The information is represented using the Semantic Web Conference Ontology together with terms from other popular RDF vocabularies such as FOAF, iCal, and Dublin Core. The dataset contains RDF links into several other Semantic Web data sources:

Some examples of RDF links between the datasets are given below: 

http://data.semanticweb.org/conference/eswc/2008 foaf:based_near http://dbpedia.org/resource/Tenerife .
 
http://data.semanticweb.org/conference/eswc/2008/paper/244 swc:hasTopic http://dbpedia.org/resource/Data_integration .
  
http://data.semanticweb.org/conference/eswc/2008/paper/244 owl:sameAs http://revyu.com/things/eswc-2008-paper-a-semantic-web .
 
http://data.semanticweb.org/person/richard-cyganiak owl:sameAs http://semanticweb.org/id/Richard_Cyganiak .

2. Access Mechanisms


There are three access mechanisms to the ESWC 2008 dataset:

1. Linked Data Interface

All URIs from the dataset are dereferenceable on the Web according to the Linked Data principles. This allows the data to be browsed using Semantic Web browsers and enables Semantic Web Search engines to crawl the data. Some example URIs for the dataset are:

Background information about Linked Data is found on the W3C Linking Open Data wiki page and in the How to Publish Linked Data on the Web tutorial.

2. SPARQL Endpoint

The dataset can be queried via the following SPARQL endpoint: http://data.semanticweb.org/sparql

The endpoint can be accessed using the SNORQL query editor (a javascript application, which does not work with Internet Explorer). Several example queries against the ESWC2008 dataset are provided in Section 4.

3. Dataset Dump for Download

The complete ESWC2008 dataset can be downloaded from http://data.semanticweb.org/dumps/conferences/eswc-2008-complete.rdf

3. Browsing the Data

The dataset can be browsed using various Semantic Web browsers. For instance:

An up-to-date list with more Semantic Web browsers is maintained on the LOD Browsers and Clients wikipage.

4. Querying the Data

The data can be queried via the SPARQL endpoint using any SPARQL-compliant client. A client that is provided by data.semanticweb.org is the SNORQL query editor. Some example queries using SNORQL are found below (SNORQL does not work with Internet Explorer):

5. Searching the Data

The ESWC dataset is crawled by various Semantic Web search engines. You can for instance use Falcons to search for ESWC related data.

An alternative search engine is Sindice:

Some queries on SWSE (Semantic Web Search Engine):

A complete list of Semantic Web search engines is provided on the LOD Semantic Web Search Engines wikipage.

6. Adding more Data

You can provide additional RDF information about ESWC 2008 papers and authors by adding Semantic MediaWiki Markup to the corresponding articles of the Semantic Web Community Wiki. After extending an article, your data will be published on the Semantic Web and will mix with data about the paper or author from other sources. A listing of all ESWC 2008 related articles is found here.

For instance, after adding the topic "Query Distribution" to the article about the paper 'Querying Distributed RDF Data Sources with SPARQL', this additional piece of information mixes with the other data about the paper on the Web (see here).

7. Discussing and Rating Papers

ESWC 2008 papers can be discussed and rated on Revyu. See here for a list of ESWC 2008 papers on Revyu. After reviewing a paper, your review is available on the Revyu HTML website and is also published as RDF on the Semantic Web.

Let's for instance take the paper Exposing Large Datasets with Semantic Sitemaps. After rating the on this page, the review can be retrieved as RDF from here and also mixes nicely with the other data about the paper (see here).

8. BibSonomy

The BibSonomy social bookmark and publication sharing system has imported the ESWC conference data and provides a tag cloud visualizing the ESWC conference topics. The cloud contains all accepted papers of the ESWC 2008 conference and its workshops, together with the keywords (tags) that authors have associated with their papers or that show up in the paper titles. The most popular tag from this cloud are listed below:

BibSonomy also provides dereferencable Linked Data URIs for papers. You can therefore also browse the data with the Semantic Web browsers listed above (Display example paper with Mables). A complete RDF dump of the ESWC data within BibSonomy is available here.

9. Credits


Lots of thanks to:

Have fun with the data!

Chris Bizer (ESWC 2008 Semantic Web Technologies Coordinator)