DBpedia state of affairs8th DBpedia Meeting, Oct 27th 2016, Sunnyvale CA

Dimitris Kontokostas, DBpedia Association & AKSW/KILThttp://dbpedia.org

Contents - Technical updates

- Overview & updates

- What we’re busy with

- Organizational updates

- DBpedia Association

- Support & funding

Contents - Technical updates

- Overview

- What we’re busy with

- Organizational updates

- DBpedia Association

- Support & funding

2016-04 Release (highlights)

- 9.5 billion facts

- 130 languages, Commons, Wikidata

- Citations & cited facts (exp.)

- Raw duplicate property cleanup

- Wikidata-based view

Data Quality- 38% improvement in schema conformant data (2015-04 -> 2016-04)

- Measured with RDFUnit

- Major data cleanup processes

- Mapping validation tool (RDFUnit & RML)

○ From 18h to 30s

○ Mapping refinements

○ Ontology cleanup

Data Access- Main SPARQL endpoint see here for details

- Now 11M Hits/Day (09/16) - Fun fact: Hoteli Maestral one of our very high traffic users

- DataID- DCAT / VOID ++ extension- Dynamic Download page- Statistics generation- Dockerization

NLP / NIF CorpusProvide NIF Corpus (text & links) with each release

- Start with abstracts plan for whole page

- Fact extraction challenges

NIF: NLP Interchange Format (RDF vocabulary)

Other things we are busy with- Shortening time-to-release (~5 months)

- Wikidata data transform & integration

- Global (inter-wikipedia) pagerank (to be announced soon)

- Github-based Backlinking (to be announced soon)

- Mapping alignment (UPM)

- Mapping discovery / inference & provenance

Integration of (other) sources (Immediate) Goals:

- Unify data from all Wikimedia projects ○ Start by basing on Wikidata IDs○ Mint our own IDs and go beyond Wikimedia

- Company dataset (in progress)- Media, publishing, law & legislation (in discussion)

Contents - Technical updates

- Overview & updates

- What we’re busy with

- Organizational updates

- DBpedia Association

- Support & funding

DBpedia Association (non-profit)- Founded in 2014

- Operational since January 2016

- Support from DBpedia founding members (Soeren, Chris & Kinsley)

- Draft charter 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.

Membership type Joined Applying

Students 18 6

individual/Self-Employed 1 18

SME, Research Institute 1 2

Start-up/Small Research Group 4

Voluntary Payment Option for membership fee

- Applicants can apply for reduction- Board approval needed- Fees are reduced to 20€ per year- Member can pay full fee voluntarily

DBpedia Members

Association goals (for 2017)- Official language & topic chapters

- E.g. Dutch, German, Media, Law & Legislation, ...

- Better community synchronization

- Improve services and secure funding

Funding (Why) http://wiki.dbpedia.org/why-is-dbpedia-so-important

- Basic side-financing via H2020 and German national funding for

- Core staff

- Some event & PR

- However:

- no funding for hosting

- no sustainable funding (bound to projects)

- Services are stable, but lot’s of “what if’s”

We need organisations to join and provide support, links, backlinks & data.

Funding (What)- Increase quality of hosting and data

- Provide support for community issues

- Better publicity and exploitation

- Merge community contributions

- Systematically develop & improve DBpedia’s public data, software and

services

Funding Strategies4 main strategies developed during the DBpedia board discussion:

● Public fundraising (donation campaigns)● Direct fundraising (direct company contact)● Membership fees● Community/Project fundraising (i.e. H2020, COST, ITN)

Would love to hear your ideas to make DBpedia self-sustainable

Thank you for your attention!

Questions?

(Available until Tuesday to meet & discuss / ping me!!!)

More information: http://dbpedia.orgJoin as a member: http://dbpedia.org/membership

Slide contributions by Julia Holze & Sebastian Hellmann