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DBpedia Overview - Sebastian Hellmannhttp://dbpedia.org
Overview● DBpedia is … ● DBpedia Association
○ Organisational Structure ○ Technical Issues○ Funding + Goals
DBpedia is ...
DBpedia is a crowd-sourced community effort to extract structured information from Wikipedia and Wikidata
The DBpedia Community enriches the extracted information with additional taxonomies
Links: inbound / outbound / text
Data submission by DBpedians
http://downloads.dbpedia.org/2015-10/
DBpedia is … a fused, multi-domain, multilingual dataset
Ontology
DBpedia is … vital
DBpedia is … a public service and infrastructure Main SPARQL Endpoint for querying with 99.3% uptime
source: http://sparqles.ai.wu.ac.at/endpoint?uri=http%3A%2F%2Fdbpedia.org%2Fsparql
Over 20 Language Chapter that volunteered to do
● local extraction and merging● community building and linking● hosting of local DBpedias and Spotlight
http://nl.dbpedia.org
http://nl.dbpedia.org/resource/Den_Haag
DBpedia Association● Organisational Structure ● Technical Issues● Funding + Goals
DBpedia Association (non-profit)● founded in 2014● operational since January 2016
Furthermore:
● Markus Freudenberg, Robert Roessling, Jan Forberg● Backed by AKSW research group and InfAI (over 50 dead-beat Linked Data
experts)
DBpedia Association (non-profit)
DBpedia Charter● Public draft online: http://wiki.dbpedia.org/dbpedia-association
All data published by the DBpedia Association should be made available free of charge under a license equivalent to CC-0 or CC-BY without further restriction on commercial use and redistribution.
DBpedia GroupsOntology Working Group
Communications Group - Facebook, Slack Discussion about communication channels
Internationalisation Group
DataID
(planned) Wikidata Group, Law?
- Ideas for groups? Association will help set up the group
DBpedia Association● Organisational Structure ● Technical Issues● Funding + Goals
Backlinking https://github.com/dbpedia/links
- DBpedians can push their links to be loaded into the main endpoint- (not yet published) Maven/Ant build system that updates, validates and
packages links
Please wait for the announcement and send a GitHub pull request
(Members can get help from the association for linking and submitting)
Wikidata - Great source for DBpedia- Mission is different from DBpedia (Collect core facts)- Limited to notability
Integration, EnrichmentQuality ControlIncreased Usefulness
Integration of sources Two ways:
1. fully automateda. automatic conversionb. automatic error detection
2. highly-assisted workflows a. semi-automatic suggestionsb. test-driven error detection of data errorsc. power toolsd. push to source
Mappings automation, validation & provenance
DBpedia Association● Organisational Structure ● Technical Issues● Funding + Goals
DBpedia is ...
99.3 % uptime
25 TB downloadable data
one DBpedia Ontology
decent linkage
decent data quality
Identifiers based onWikipedia/Wikidata
DBpedia Spotlight
DBpedia is … a very ambitious project⇒ 99.99% uptime for all languages and chapters and spotlight, scalable hosting via the cloud
⇒ 500 TB
⇒ many consistent domain sub-ontologies for each domain from cars to gas turbines to amoeba to star systems to literature
⇒ highly inter- and backlinked, DBpedia can serve as an entry point to find exactly the data (or knowledge) you need
⇒ improved testing and quality control
⇒ Identifiers based on all existing authoritative and robust identifier providers… starting with company data
⇒ all languages, all domains, improved scalability
Funding● current liquidity is around 10,000€● some pre-financing via H2020 and German national funding
Services are stable, but lot’s of “what if’s”
● what if OpenLink stops hosting the main endpoint● what opportunities do we miss without a properly oiled flagship
We need organisations to join and provide financial support, links and backlinks and data.
FundingBecome a member, if …
● you profit from DBpedia in any way● you wish to get more in touch with DBpedia● the services mentioned on the flyer seem useful for your organisation
Include DBpedia in your proposals:
● deliverables● subcontracting● consortium member (either association or the national chapters)
Future EventsSEMANTiCS 2016 - The Linked Data Conference
Submission open: Industry talks / scientific paper
Sep 12-15 in Leipzig - http://semantics.cc
● Huge DBpedia meeting on 15th of September
Hope to see you in Leipzig
More information: http://dbpedia.orgSign up: http://dbpedia.org/membership
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