Tag Archives: community meeting

SEMANTiCS Interview: Dan Weitzner

As the upcoming 14th DBpedia Community Meeting, co-located with SEMANTiCS 2019 in Karlsruhe, Sep 9-12, is drawing nearer, we like to take that opportunity to introduce you to our DBpedia keynote speakers.

Today’s post features an interview with Dan Weitzner from WPSemantix who talks about timbr-DBpedia, which we blogged about recently, as well as future trends and challenges of linked data and the semantic web.

Dan Weitzner is co-founder and Vice President of Research and Development of WPSemantix. He obtained his Bachelor of Science in Computer Science from Florida Atlantic University. In collaboration with DBpedia, he and his colleagues at WPSemantix launched timbr, the first SQL Semantic Knowledge Graph that integrates Wikipedia and Wikidata Knowledge into SQL engines.

Dan Weitzner

1. Can you tell us something about your research focus?

WPSemantix bridges the worlds of standard databases and the Semantic Web by creating ontologies accessible in standard SQL. 

Our platform – timbr is a virtual knowledge graph that maps existing data-sources to abstract concepts, accessible directly in all the popular Business Intelligence (BI) tools and also natively integrated into Apache Spark, R, Python, Java and Scala. 

timbr enables reasoning and inference for complex analytics without the need for costly Extract-Transform-Load (ETL) processes to graph databases.

2. How do you personally contribute to the advancement of semantic technologies?

We believe we have lowered the fundamental barriers to adoption of semantic technologies for large organizations who want to benefit from knowledge graph capabilities without firstly requiring fundamental changes in their database infrastructure and secondly, without requiring expensive organizational changes or significant personnel retraining.  

Additionally, we implemented the W3C Semantic Web principles to enable inference and inheritance between concepts in SQL, and to allow seamless integration of existing ontologies from OWL. Subsequently, users across organizations can do complex analytics using the same tools that they currently use to access and query their databases, and in addition, to facilitate the sophisticated query of big data without requiring highly technical expertise.  
timbr-DBpedia is one example of what can be achieved with our technology. This joint effort with the DBpedia Association allows semantic SQL query of the DBpedia knowledge graph, and the semantic integration of the DBpedia knowledge into data warehouses and data lakes. Finally, timbr-DBpedia allows organizations to benefit from enriching their data with DBpedia knowledge, combining it with machine learning and/or accessing it directly from their favourite BI tools.

3. Which trends and challenges do you see for linked data and the semantic web?

Currently, the use of semantic technologies for data exploration and data integration is a significant trend followed by data-driven communities. It allows companies to leverage the relationship-rich data to find meaningful insights into their data. 

One of the big difficulties for the average developer and business intelligence analyst is the challenge to learn semantic technologies. Another one is to create ontologies that are flexible and easily maintained. We aim to solve both challenges with timbr.

4. Which application areas for semantic technologies do you perceive as most promising?

I think semantic technologies will bloom in applications that require data integration and contextualization for machine learning models.

Ontology-based integration seems very promising by enabling accurate interpretation of data from multiple sources through the explicit definition of terms and relationships – particularly in big data systems,  where ontologies could bring consistency, expressivity and abstraction capabilities to the massive volumes of data.

5. As artificial intelligence becomes more and more important, what is your vision of AI?

I envision knowledge-based business intelligence and contextualized machine learning models. This will be the bedrock of cognitive computing as any analysis will be semantically enriched with human knowledge and statistical models.

This will bring analysts and data scientists to the next level of AI.

6. What are your expectations about Semantics 2019 in Karlsruhe?

I want to share our vision with the semantic community and I would also like to learn about the challenges, vision and expectations of companies and organizations dealing with semantic technologies. I will present “timbr-DBpedia – Exploration and Query of DBpedia in SQL”

The End

Visit SEMANTiCS 2019 in Karlsruhe, Sep 9-12 and find out more about timbr-DBpedia and all the other new developments at DBpedia. Get your tickets for our community meeting here. We are looking forward to meeting you during DBpedia Day.

Yours DBpedia Association

Home Sweet Home – The 13th DBpedia Community Meeting

For the second time now, we co-located one of our DBpedia community meetings with the LDK-conference. After the previous edition in Galway two years ago, It was Leipzig’s turn to host the event. Thus, the 13th DBpedia community meeting took place in this beautiful city which is also home to the DBpedia Association’s head office. Win, Win we’d say. 

After a very successful LDK conference May 20th-21st, representatives of the European DBpedia community met at Villa Ida Mediencampus,  on Thursday, May 23rd, to present their work with DBpedia and to exchange about the DBpedia Databus.  

For those of you who missed it or for those who want a little retrospective on the day, this blog post provides you with a short LDK-wrap-up as well as a recap of our DBpedia Day.

First things first

First and foremost, we would like to thank LDK organizers for co-locating our meeting and thus enabling fruitful synergies, and a platform for the DBpedia community to exchange.

LDK

The first presentation that kicked-off the conference was given by Prof. Christiane Fellbaum from Princeton University. The topic of her talk was on “Mapping the Lexicons of Signs and Words” with the main focus on her research of mapping WordNet and SignStudy, a resource for American Sign Language. Shortly after, Prof Eduard Werner from Leipzig University gave a very exciting talk on the “Sorbian languages”. He discussed the nature of the Sorbian languages, their historical background, and the unfortunate imminent extinction of lower Sorbian due to a decline of native speakers.

The first day of LDK was full of exciting presentations related to various language-oriented topics. Researchers exchanged about linguistic vocabularies, SPARQL query recommendations, role and reference grammar, language detection, entity recognition, machine translation, under-resourced languages, metaphor identification, event detection and linked data in general. The first day ended with fruitful discussions during the poster session. After at the end of the first conference day, LDK visitors had the chance to mingle with locals in some of Leipzig’s most exciting bars during a pub crawl.

Prof. Christian Bizer from the University of Mannheim opened the second day with a keynote on “Schema.org Annotations and Web Tables: Underexploited Semantic Nuggets on the Web?”. In his talk, he gave a nice overview of the research on knowledge extraction around the large-scale Web Data Commons corpus, findings, open challenges and possible exploitations of this corpus.

The second day was busy with four sessions, each populated with presentations on exciting topics ranging from relation classification, dictionary linking and entity linking, to terminology models, topical thesauri and morphology.

The series of presentations was ended with an Organ Prelude played by David Timm, the University Music Director at the Leipzig University. Finally, the day and the conference was concluded with a conference dinner at Moritzbastei, one of Leipzig’s famous cultural centres.

DBpedia Day

On May 23rd, the DBpedia Community met for the 13th DBpedia community meeting. The event attracted more than 60 participants who extended their LDK experience or followed our call to Leipzig.

Opening & keynotes

The meeting was opened by Dr. Sebastian Hellmann, the executive director of the DBpedia Association. He gave an overview of the latest developments and achievements around DBpedia, with the main focus on the DBpedia Databus technologies. The first keynote was given by Dr. Peter Haase, from metaphacts, with an unusual interactive presentation on “Linked Data Fun with DBpedia”. The second keynote speaker was Prof. Heiko Paulheim, presenting findings, challenges and results from his work on the construction of the DBkWiki Knowledge Graph by exploiting the DBpedia extraction framework.

Showcase session

The showcases session started with a presentation given by  Krzysztof Węcel on “Citations and references in DBpedia”, followed by Peter Nancke with a presentation on the “TeBaQA Question Answering System”, Maribel Acosta Deibe speaking about “Crowdsourcing the Quality of DBpedia” and finally, a presentation by Angus Addlesee on “Data Reconciliation using DBpedia”.

NLP & DBpedia session

The DBpedia & NLP session was opened by  Diego Moussallem presenting the results from his work on “Generating Natural Language from RDF Data”. The second presentation was given by Christian Jilek on the topic of “Named Entity Recognition for Real-Time Applications”, which at the same time won the best research paper at the LDK conference. Next, Jonathan Kobbe presented the best student paper at the LDK conference on the topic of “Argumentative Relation Classification”. Finally, Edgard Marx closed the session with an overview presentation on “From the word to the resource”.

 

Side-Event – Hackathon

The “Artificial Intelligence for Smart Agriculture” Hackathon focused on enhancing the usability of automatic analysis tools which utilize semantic big data for agriculture, as well as conducting an outreach of the DataBio project for the DBpedia community. The event was supported by PNO, Spacebel, PSNC, and InfAI e.V.

We improved the visualization module of Albatross, a platform for processing and analyzing Linked Open Data, and added functionalities to geo-L, the geospatial link discovery tool.  

In addition, we presented a paper about Linked Data publication pipelines, focusing on agri-related data, at the co-located LSWT conference.

Wrap Up

After the event, DBpedians joined the DBpedia Association in the nearby pub Gosenschenke to delve into more vital talks about the Semantic Web world, Linked Data & DBpedia.

In case you missed the event, all slides and presentations are available on our website. Further insights feedback and photos about the event can be found on Twitter via #DBpediaLeipzig.

We are currently looking forward to the next DBpedia Community Meeting, on Sept, 12th in Karlsruhe, Germany. This meeting is co-located with the SEMANTiCS Conference. Contributions are still welcome. Just ping us via dbpedia@infai.org and show us what you’ve got. You should also get in touch with us if you want to host a DBpedia Meetup yourself. We will help you with the program, the dissemination or organizational matters of the event if need be.

Stay tuned, check Twitter, Facebook, and the website, or subscribe to our newsletter for the latest news and updates.

 

Your DBpedia Association

Vítejte v Praze!

After our meetups in Poland and France last year, we delighted the Czech DBpedia community with a DBpedia meetup. It was co-located with the XML Prague conference on February 7th, 2019.

First and foremost, we would like to thank Jirka Kosek (University of Economics, Prague), Milan Dojchinovski (AKSW/KILT, Czech Technical University in Prague), Tomáš Kliegr (KIZI/University of Economics, Prague) and, the XML Prague conference for co-hosting and support the event.

Opening the DBpedia community meetup

The Czech DBpedia community and the DBpedia Databus were in the focus of this meetup. Therefore, we invited local data scientists as well as DBpedia enthusiasts to discuss the state-of-the-art of the DBpedia databus. Sebastian Hellmann (AKSW/KILT) opened the meeting with an introduction to DBpedia and the DBpedia Databus. Following, Marvin Hofer explained how to use the DBpedia databus in combination with the Docker technology and, Johannes Frey (AKSW/KILT) presented the methods behind the DBpedia’s Data Fusion and Global ID Management.

Showcase Session

Marek Dudáš (KIZI/UEP) started the DBpedia Showcase Session with a presentation on “Concept Maps with the help of DBpedia”, where he showed the audience how to create a “concept map” with the ContextMinds application. Furthermore, Tomáš Kliegr (KIZI/UEP) presented “Explainable Machine Learning and Knowledge Graphs”. He explained his contribution to a rule-based classifier for business use cases. Two other showcases followed: Václav Zeman (KIZI/UEP), who presented “RdfRules: Rule Mining from DBpedia” and Denis Streitmatter (AKSW/KILT), who demonstrated the “DBpedia API”.

Miroslav Blasko presents “Ontology-based Dataset Exploration”

Closing this Session, Miroslav Blasko (CTU, Prague) gave a presentation on “Ontology-based Dataset Exploration”. He explained a taxonomy developed for dataset description. Additionally, he presented several use cases that have the main goal of improving content-based descriptors.

Summing up, the DBpedia meetup in Prague brought together more than 50 DBpedia enthusiasts from all over Europe. They engaged in vital discussions about Linked Data, the DBpedia databus, as well as DBpedia use cases and services.

 

 

 

In case you missed the event, all slides and presentations are available on our website. Further insights  feedback, and photos about the event can be found on Twitter via #DBpediaPrague.

We are currently looking forward to the next DBpedia Community Meeting, on May 23rd, 2019 in Leipzig, Germany. This meeting is co-located with the Language, Data and Knowledge (LDK) conference. Stay tuned and check Twitter, Facebook and the website or subscribe to our newsletter for the latest news and updates.

Your DBpedia Association

Call for Participation: DBpedia meetup @ XML Prague

We are happy to announce that the upcoming DBpedia meetup will be held in Prague, Czech Republic. During the XML conference Prague , Feb 7-9,  the DBpedia Community will get together on February 7, 2019.

Highlights

– Intro: DBpedia: Global and Unified Access to Knowledge (Graphs)

– DBpedia Databus presentation

– DBpedia Showcase Session

Quick Facts

– Web URL: https://wiki.dbpedia.org/meetings/Prague2019

– When: February 7th, 2019

– Where: University of Economics, nam. W. Churchilla 4, 130 67 Prague 3, Czech Republic

Schedule
Tickets

– Attending the DBpedia Community Meetup costs €40. DBpedia members get free admission, please contact your nearest DBpedia chapter or the DBpedia Association for a promotion code.

– You need to buy a ticket. Please check all details here: http://www.xmlprague.cz/conference-registration/

Sponsors and Acknowledgments

– XML conference Prague (http://www.xmlprague.cz/)

– Institute for Applied Informatics (http://infai.org/en/AboutInfAI)

– OpenLink Software (http://www.openlinksw.com/)

Organisation

-Milan Dojčinovski, AKSW/KILT

– Julia Holze, DBpedia Association

– Sebastian Hellmann, AKSW/KILT, DBpedia Association

– Tomáš Kliegr, KIZI/University of Economics, Prague

 

Tell us what cool things you do with DBpedia. If you would like to give a talk at the DBpedia meetup, please get in contact with the DBpedia Association.

We are looking forward to meeting you in Prague!

For latest news and updates check Twitter, Facebook and our Website or subscribe to our newsletter.

Your DBpedia Association

Grüezi Community!

More than 110 DBpedia enthusiasts joined the Community Meeting in Vienna.

After the success of the last two community meetings in Amsterdam and Leipzig, we thought it is time to meet you at the SEMANTiCS conference again. This year’s SEMANTiCS opened with the DBpedia Day on September 10th, 2018 in Vienna.

First and foremost, we would like to thank the Institute for Applied Informatics for supporting our community and many thanks to the Technical University Vienna and the SEMANTiCS for hosting our community meeting.

Opening Session

Javier Fernández

Javier David Fernández García, Vienna University of Economics, opened the meeting with his keynote Linked Open Data cloud – act now before it’s too late. He reflected on challenges towards arriving at a truly machine-readable and decentralized Web of Data. Javier reviewed the current state of affairs, highlighted key technical and non-technical challenges, and outlined potential solution strategies.

The second keynote speaker was Mathieu d’Aquin, Professor of Informatics at the Insight Centre for Data Analytics at NUI Galway. Mathieu, who is specialized in data analytics, completed the meeting with his keynote Dealing with Open Domain Data.

Mathieu d’Aquin

 

Showcase Session

Beyza Yaman

Patrik Schneider started the DBpedia Showcase Session with his presentation of the “NII (Japan) Research Showcase – A Knowledge Graph Management Framework for DBpedia”. Shortly after, Jan Forberg, from AKSW/KILT Leipzig, promoted the usage of WebIDs in a short how-to tutorial session. Adam Sanchez, from University Grenoble Alpes, talked about RDFization of a relational database from medicine domain by using Ontop. Followed by another presentation by Beyza Yaman, University of Genoa, talking about Exploiting Context-Dependent Quality Metadata for Linked Data Source Selection. Afterwards, Robert Bielinski, from AKSW/KILT Leipzig, introduced the new DBpedia release circle by using Apache Spark. Closing the Showcase Session, Tomas Kliegr, University of Economics Prague, presented a showcase using DBpedia to study cognitive biases affecting interpretation of machine learning results.

 

For further details of the presentations follow the links to the slides.

  • WebID Creation by Jan Forberg, AKSW/KILT slides
  • RDFization by Adam Sanchez, Université Grenoble Alpes slides
  • Exploiting Context-Dependent Quality Metadata by Beyza Yaman, University of Genoa slides
  • Extracting Data using Apache Spark by Robert Bielinski, AKSW/KILT slides
  • Using DBpedia to study cognitive biases affecting interpretation of machine learning results by Tomas Kliegr, University of Economics Prague slides
Parallel Session

Gary Munnelly

As a regular part of the DBpedia Community Meeting, we had two parallel sessions in the afternoon where DBpedians can discuss technical issues. Participants interested in NLP-related topics joined the NLP & DBpedia session. Milan Dojchinovski (AKSW/KILT) chaired this session with four very stimulating talks. Hereafter you will find all presentations given during this session:

 

Diego Moussallem

At the same time, the DBpedia Association Hour provided a platform for the community to discuss technical questions and especially the DBpedia databus. Sebastian Hellmann presented the DBpedia databus and explained the advantages of global IDs. Shortly after, Marvin Hofer (AKSW/KILT) demonstrated the new DBpedia global ID webinterface. Please find his slides here.

 

Afternoon Track

Enno Meijers

The 12th edition of the DBpedia Community Meeting also covered a special chapter session, chaired by Enno Meijers, from the Dutch DBpedia Language Chapter. The speakers presented the latest technical or organizational developments of their respective chapter.

Following, you find a list of all presentations of this session:

 

This session has mainly created an exchange platform for the different DBpedia chapters. For the first time, representatives of the European chapters discussed problems and challenges of DBpedia from their point of view. Furthermore, tools, applications and projects were presented by each chapter.

Jens Grivolla

Summing up, the 12th DBpedia Community Meeting brought together more than 110 DBpedia enthusiasts from Europe who engaged in vital discussions about Linked Data, the DBpedia databus as well as DBpedia use cases and services.

 

In case you missed the event, all slides and presentations are also available on our Website. Further insights, feedback and photos about the event are available on Twitter via #DBpediaDay.

We are now looking forward to more DBpedia meetings in the next years. So, stay tuned and check Twitter, Facebook and the Website or subscribe to our Newsletter for latest news and updates.

Yours

DBpedia Association

Call for Participation: 12th DBpedia Community Meeting in Vienna

We are happy to announce that the 12th DBpedia Community Meeting will be held in Vienna, Austria. At the beginning of SEMANTiCS 2018, Sep 10-13, the DBpedia Community will get together on the 10th of September for the DBpedia Day.

Highlights

– Keynote presentation by Javier David Fernández García (WU Vienna)

– Keynote presentation by Mathieu d’Aquin (NUI Galway)

– DBpedia Association hour

– DBpedia Chapter Session

– Tell us what cool things you do with DBpedia: https://goo.gl/forms/ngRWCjgH9ocDCrEb2

Quick Facts

– Web URL: http://wiki.dbpedia.org/meetings/Vienna2018

– Hashtag: #DBpediaDay

– When: September 10th, 2018

– Where: Gußhaus Campus of Vienna’s Technical University, Gußhausstraße 27-29, 1040 Vienna, Austria

– Call for Contribution: Submit your proposal in our form.

Tickets

– Attending the DBpedia Community Meeting costs €50 (excl. registration fee and VAT). DBpedia members get free admission, please contact your nearest DBpedia chapter or the DBpedia Association for a promotion code.

– You need to buy a ticket. Please check all details here: https://2018.semantics.cc/registration

Schedule

Please check our schedule for the 12th DBpedia Community meeting here: https://wiki.dbpedia.org/meetings/Vienna2018

Pre-event

– When: September 9th, 2018

– Where: SBA Research, Favoritenstraße 16, 1040 Vienna, Austria

– What: We will discuss the development strategy of the DBpedia Association with members of the DBpedia chapters. You are cordially invited to participate in the discussion to shape the strategy of DBpedia.

– Registration can be made by email.

 

Sponsors and Acknowledgments

– Technical University Wien (https://www.tuwien.ac.at/en/)

– Institute for Applied Informatics (https://infai.org/)

– OpenLink Software (http://www.openlinksw.com/)

– SEMANTiCS Conference Sep 10-13, 2018 in Vienna (https://2018.semantics.cc/)

– SBA Research (https://www.sba-research.org/)

In case you want to sponsor the 12th DBpedia Community Meeting, please contact the DBpedia Association via dbpedia@infai.org.

 

Organisation

– Julia Holze, DBpedia Association

– Sebastian Hellmann, AKSW/KILT, DBpedia Association

 

We are looking forward to meeting you in Vienna!

For latest news and updates check Twitter, Facebook and our Website or subscribe to our newsletter.

Your DBpedia Association

 

DBpedia will meet the US-based Community

Only 8 days left to reserve your seat for our 3rd US DBpedia Community Meeting. We are happy to announce that the 11th DBpedia Meeting will be held in Cupertino, California on October 12th 2017, hosted by Apple Inc.

The meetup focuses on connecting the community interested in DBpedia and Knowledge Graphs in general, has included lightning talks by distinguished speakers (e.g. from Stanford, Google, IBM Watson, Netflix, LinkedIn, Wikimedia Foundation, Nuance, etc.). Talk topics have extended also to natural language processing, knowledge representation, information extraction, integration and retrieval, graph databases, knowledge base embeddings and machine learning.

We are looking forward to meeting again in person with the US-based DBpedia Community.

Quick facts

  • Host: Apple Inc.
  • Registration: through eventbrite (limited seats)

Schedule

Please check our schedule for the next DBpedia Community Meeting here: http://wiki.dbpedia.org/meetings/California2017

Acknowledgments

If you would like to become a sponsor for the 11th DBpedia Meeting, please contact the DBpedia Association.

Apple Inc. For sponsoring catering and hosting our meetup on their campus.
Google Summer of Code 2017 Amazing program and the reason some of our core DBpedia devs are visiting California
ALIGNED – Software and Data Engineering For funding the development of DBpedia as a project use-case and covering part of the travel cost
Institute for Applied Informatics For supporting the DBpedia Association
OpenLink Software For continuous hosting of the main DBpedia Endpoint

Organisation

Registration

Attending the DBpedia Community Meeting is free of charge, but seats are limited. Make sure to register to reserve a seat.

We are looking forward to meeting you in California.

Check our website for further updates, follow us on #twitter or subscribe to our newsletter.

Your DBpedia Association

 

More than 140 DBpedia enthusiasts joined the Community Meeting in Amsterdam.

After the success of the last two community meetings in Sunnyvale and in Galway, we thought it is time to go Orange again. During the SEMANTiCS 2017 in Amsterdam, Sep 11-14, the DBpedia Community met on the 14th of September. First and foremost, we would like to thank the Institute for Applied Informatics for supporting our community and many thanks to the Meervaart Theatre and the SEMANTiCS for hosting our community meeting.

picture by Andrea Volpini

Opening Session

Chris Welty

During the opening session, Chris Welty, Google Researcher, presented Even the Changes Are Changing: A New Age of Cognitive Computing. He introduced the impact and challenges of question answering & AI as well as the development of Jeopardy through technical changes. Victor de Boer from the VU University talked about Semantic Technology for Development: Semantic Web without the Web?. He demonstrated the use of semantic technology in the challenging technical environment of developing countries. Both talks illustrated the ever growing importance of semantic technology and AI each placed at opposite sites of the technology spectrum, from Raspberry PIs to High Performance Clusters.

 

Showcase Session

The DBpedia Showcase Session started with an interactive interview. Sebastian Hellmann (AKSW/KILT) talked with Jan-Bart de Vreede (Kennisnet, former member of the Wikimedia Foundation) about the challenges of growing an open community and creating a more formal structure. They discussed advantages, pitfalls and what lessons can be learned from other communities such as Wikimedia. Afterwards Markus Freudenberg (AKSW/KILT) introduced the highlights of the 2016-10 DBpedia Release.

At this session, five speakers presented how to utilize DBpedia in novel and interesting ways. Including:

  • Virtuoso 8 and Scalable Attributed-based Access Controls (ABAC) by Patrick van Kleef (Openlink Software)
  • Learning to Associate DBpedia Entities like Humans by Joern Hees (DFKI) (demo)
  • Towards Using UnifiedViews for Executing DBpedia Data Extraction and Curation Tasks by Tomas Knap (Semantic Web Company)
  • Sustainable Linked Data Generation: The Case of DBpedia by Wouter Maroy (imec)
  • Mappings UI by Ismael Rodríguez (Polytechnic University of Catalonia)

Wouter Maroy & Ismael Rodríguez

Parallel Session

As a regular part of the DBpedia Community Meeting, we had two parallel sessions in the afternoon where DBpedia newbies can learn about what DBpedia is and how to use the DBpedia datasets. Participants who wanted to learn DBpedia basics joined the tutorial session by Markus Freudenberg (DBpedia Release Manager). The DBpedia Association Hour provided a platform for the community to discuss the results of the DBpedia Strategy Survey 2017. This survey was prepared by Sören Auer and the DBpedia Board members to get to know what the DBpedia Community thinks about DBpedia’s strategic priorities and how the funds of the DBpedia Association should be spent. Even if 45 minutes were not adequate to review all survey questions, this session proved to be beneficial due to a really agile and dynamic discussion. A better cooperation and communication between the Association and the different national and language chapter is only one suitable key which was embraced by the community to facilitate problem solving and DBpedia’s organization.

Afternoon Track

The sessions in the afternoon highlighted two important fields of research and development, namely DBpedia Ontology and DBpedia & NLP. At the DBpedia Ontology Session, Gustavo Publio (AKSW/KILT) presented data quality issues in DBpedia and highlighted the challenges on redesign the DBpedia Ontology (slides).  Wouter Maroy (imec) and Ismael Rodríguez (Polytechnic University of Catalonia) showcased the DBpedia Mappings Front-End Administration, which they created during this year’s Google Summer of Code project. If you are interested in career opportunities at DBpedia, check out Wouter’s success story here.

Gustavo Publio

At the same time, Milan Dojchinovski (AKSW/KILT) chaired the DBpedia & NLP session with five very interesting talks. In the following you will find all presentations given during this session:

Dutch DBpedia Hour & Joint Workshop

Enno Meijers (National Library of the Netherlands) chaired the Dutch DBpedia Hour. In this open session members of the Dutch DBpedia Language Chapter discussed tasks and responsibilities for sustaining and developing the Dutch DBpedia as well as communication, technical infrastructure and content improvement of the DBpedia Dutch Language Chapter. The reference for this discussion was the tasks and responsibilities stated in the Memorandum of Understanding signed by Huygens ING, Koninklijke Bibliotheek, Vrije Universiteit Amsterdam, iMec and Beeld en Geluid. Outcome of this session was an agreement on the approach for creating an operational plan.

Simultaneously, DBpedia joint a session with the Workshop “Linked Data Quality Assessment and Improvement from Academia to Industry”. The presentations are available below:

Amit Kirschenbaum & Magnus Knuth

In the closing session, Sebastian Hellmann (AKSW/KILT) announced a new collaboration to strengthen the DBpedia NLP Department. Via videostream we talked with Mike Tung and Filipe Mesquita from diffbot, about NLP and the relation extraction from Wikipedia articles. If you are interested in the new collaboration, please check diffbot’s slides here.

All slides and presentations are also available on our Website and you will find more feedback and photos about the event on Twitter via #DBpediaAmsterdam17.

We would like to thank the DBpedia Dutch language chapter, especially Enno Meijers (National Library of the Netherlands), Lieke Verhelst (Linked Data Factory, Informagic), Victor de Boer (Vrije Universiteit Amsterdam), Roland Cornelissen (metamatter), Gerald Wildenbeest (Saxion), Gerard Kuys (Ordina), Maarten Brinkerink (The Netherlands Institute for Sound and Vision) as well as Julia Holze (DBpedia Association), Dimitris Kontokostas (DBpedia Chapter Coordinator) and Sebastian Hellmann (AKSW/KILT, DBpedia Association) for devoting their time to curating the program and organizing the meeting.

Special thanks go to Katharina Weissenberg and Anna Keil for supporting the meeting by taking pictures of the community and the event.

We are now looking forward to the 11th DBpedia Community Meeting which will be held on 12th of October 2017 in Cupertino, California. Visit our event page for further updates.

So, stay tuned and check Twitter, Facebook and the Website or subscribe to our Newsletter for latest news and updates.

See you soon!

Yours,

DBpedia Association

GSoC 2017 – Recap and Results

We are very pleased to announce that all of this year’s Google Summer of Code students made it successful through the program and passed their projects. All codes have been submitted, merged and are ready to be examined by the rest of the world.

Marco Fossati, Dimitris Kontokostas, Tommaso Soru, Domenico Potena, Emanuele Storti , anastasia Dimiou, Wouter Maroy, Peng Xu, Sandro Coelho and Ricardo Usbeck, members of the DBpedia Community, did a great job in mentoring 7 students from around the world. All of the students enjoyed the experiences made during the program and will hopefully continue to contribute to DBpedia in the future.

“GSoC is the perfect opportunity to learn from experts, get to know new communities, design principles and work flows.” (Ram G Athreya)”

Now, we would like to take that opportunity to  give you a little recap of the projects mentored by DBpedia members during the past months. Just click below for more details .

 

DBpedia Mappings Front-End Administration by Ismael Rodriguez

The goal of the project was to create a front-end application that provides a user-friendly interface so the DBPedia community can easily view, create and administrate DBpedia mapping rules using RML. The developed system includes user administration features, help posts, Github mappings synchronization, and rich RML related features such as syntax highlighting, RML code generation from templates, RML validation, extraction and statistics. Part of these features are possible thanks to the interaction with the DBPedia Extraction Framework. In the end, all the functionalities and goals that were required have been developed, with many functional tests and the approval of the DBpedia community. The system is ready for production deployment. For further information, please visit the project blog.  Mentors: Anastasia Dimou and Wouter Maroy (Ghent University), Dimitris Kontokostas (GeoPhy HQ).

Chatbot for DBpedia by Ram G Athreya

DBpedia Chatbot is a conversational chatbot for DBpedia which is accessible through the following platforms: a Web Interface, Slack and Facebook Messenger.

The bot is capable of responding to users in the form of simple short text messages or through more elaborate interactive messages. Users can communicate or respond to the bot through text and also through interactions (such as clicking on buttons/links). The bot tries to answer text based questions of the following types: natural language questions, location information, service checks, language chapters, templates and banter. For more information, please follow the link to the project site. Mentor: Ricardo Usbeck (AKSW).

Knowledge Base Embeddings for DBpedia by Nausheen Fatma

Knowledge base embeddings has been an active area of research. In recent years a lot of research work such as TransE, TransR, RESCAL, SSP, etc. has been done to get knowledge base embeddings. However none of these approaches have used DBpedia to validate their approach. In this project, I want to achieve the following tasks: i) Run the existing techniques for KB embeddings for standard datasets. ii) Create an equivalent standard dataset from DBpedia for evaluations. iii) Evaluate across domains. iv) Compare and Analyse the performance and consistency of various approaches for DBpedia dataset along with other standard datasets. v) Report any challenges that may come across implementing the approaches for DBpedia. For more information, please follow the links to her project blog and GitHub-repository. Mentors: Tommaso Soru (AKSW) and  Sandro Coelho (KILT).

Knowledge Base Embeddings for DBpedia by Akshay Jagatap

The project defined embeddings to represent classes, instances and properties by implementing Random Vector Accumulators with additional features in order to better encode the semantic information held by the Wikipedia corpus and DBpedia graphs. To test the quality of embeddings generated by the RVA, lexical memory vectors of locations were generated and tested on a modified subset of the Google Analogies Test Set. Check out further information via Akshay’s GitHub-repo. Mentors: Tommaso Soru (AKSW) and Xu Peng (University of Alberta).

The Table Extractor by Luca Vergili

Wikipedia is full of data hidden in tables. The aim of this project was to explore the possibilities of exploiting all the data represented with the appearance of tables in Wiki pages, in order to populate the different chapters of DBpedia through new data of interest. The Table Extractor has to be the engine of this data “revolution”: it would achieve the final purpose of extracting the semi structured data from all those tables now scattered in most of the Wiki pages. In this page you can observe dataset (english and italian) extracted using table extractor . Furthermore you can read log file created in order to see all operations made up for creating RDF triples. I recommend to also see this page, that contains the idea behind the project and an example of result extracted from log files and .ttl dataset. For more details see Luca’s Git-Hub repository. Mentors: Domenico Potena and Emanuele Storti (Università Politecnica delle Marche).

 

Unsupervised Learning of DBpedia Taxonomy by Shashank Motepalli

Wikipedia represents a comprehensive cross-domain source of knowledge with millions of contributors. The DBpedia project tries to extract structured information from Wikipedia and transform it into RDF.

The main classification system of DBpedia depends on human curation, which causes it to lack coverage, resulting in a large amount of untyped resources. DBTax provides an unsupervised approach that automatically learns a taxonomy from the Wikipedia category system and extensively assigns types to DBpedia entities, through the combination of several NLP and interdisciplinary techniques. It provides a robust backbone for DBpedia knowledge and has the benefit of being easy to understand for end users. details about his work and his code can e found on the projects site. Mentors: Marco Fossati (Università degli Studi di Trento) and Dimitris Kontokostas (GeoPhy HQ). 

The  Wikipedia List-Extractor by Krishanu Konar

This project aimed to augment upon the already existing list-extractor project by Federica in GSoC 2016. The project focused on the extraction of relevant but hidden data which lies inside lists in Wikipedia pages. Wikipedia, being the world’s largest encyclopedia, has humongous amount of information present in form of text. While key facts and figures are encapsulated in the resource’s infobox, and some detailed statistics are present in the form of tables, but there’s also a lot of data present in form of lists which are quite unstructured and hence its difficult to form into a semantic relationship. The main objective of the project was to create a tool that can extract information from Wikipedia lists and form appropriate RDF triplets that can be inserted in the DBpedia dataset. Fore details on the code and about the project check Krishanu’s blog and GitHub-repository. Mentors: Marco Fossati (Università degli Studi di Trento), Domenico Potena and Emanuele Storti (Università Politecnica delle Marche). 

Read more

We are regularly growing our community through GSoC and can deliver more and more opportunities to you. Ideas and applications for the next edition of GSoC are very much welcome. Just contact us via email or check our website for details.

Again, DBpedia is planning to be a vital part of the GSoC Mentor Summit, from October 13th -15th, at the Google Campus in Sunnyvale California. This summit is a way to say thank you to the mentors for the great job they did during the program. Moreover it is a platform to discuss what can be done to improve GSoC and how to keep students involved in their communities post-GSoC.

And there is more good news to tell.  DBpedia wants to meet up with the US community during the 11th DBpedia Community Meeting in California.  We are currently working on the program and keep you posted as soon as registration is open.

So, stay tuned and check  Twitter, Facebook and the Website or subscribe to our Newsletter for latest news and updates.

See you soon!

Yours,

DBpedia Association

Amsterdam verwacht u op de volgende DBpedia Community Meeting!

We are happy to announce that the 10th DBpedia Community Meeting will be held in Amsterdam, Netherlands. During the SEMANTiCS 2017, Sep 11-14, the DBpedia Community will get together on the 14th of September for the DBpedia Day.

What cool things do you do with DBpedia? Present your tools and datasets at the DBpedia Community Meeting. Please submit your proposal in our form.

Highlights

– Keynote by Chris Welty (Google Research NY)

– Keynote by Victor de Boer (VU University)

– DBpedia Association hour & Dutch DBpedia hour

– A session on DBpedia ontology by members of the DBpedia ontology committee

– DBpedia Tutorial Session (For people who want to learn about DBpedia.)

– We will talk with Mike Tung, CEO and founder from diffbot, about the DBpedia NLP department via videostream.

Quick Facts

– Web URL: http://wiki.dbpedia.org/meetings/Amsterdam2017

– Hashtag: #DBpediaAmsterdam17

– When: September 14th, 2017

– Where: Meervaart Theatre, Meer en Vaart 300, 1068 LE Amsterdam, Netherlands

– Call for Contribution: Please submit your proposal in our form.

Tickets

– Attending the DBpedia Community Meeting costs €40 (excl. registration fee and VAT). DBpedia members get free admission, please contact your nearest DBpedia chapter or the DBpedia Association for a promotion code.

– Please check all details here:  http://wiki.dbpedia.org/meetings/Amsterdam2017#tickets

Schedule

Please check our schedule for the 10th DBpedia Community meeting here: http://wiki.dbpedia.org/meetings/Amsterdam2017

Workshop

If you can’t stand it till the end of the SEMANTiCS, you can already participate in the workshop “Two worlds, one goal: A Reliable Linked Data ecosystem for media” held by DBpedia and Wolters Kluwer on the 11th of September. This half-day workshop aims at exploring major topics for publishers and libraries from DBpedia’s and Wolters Kluwer’s perspective. Therefore, both communities will dive into core areas like Interlinking, Metadata and Data Quality and address challenges such as fundamental requirements when publishing data on the web. Did we spark your interest? Check our detailed program here and get your ticket today.

Sponsors and Acknowledgments

– Vrije Universiteit Amsterdam (https://www.vu.nl/en/)

– ALIGNED Project (http://aligned-project.eu/)

– Institute for Applied Informatics (http://infai.org/en/AboutInfAI)

– OpenLink Software (http://www.openlinksw.com/)

– SEMANTICS Conference Sep 11-14, 2017 in Amsterdam (https://2017.semantics.cc/)

In case you want to sponsor the 10th DBpedia Community Meeting, please contact the DBpedia Association via dbpedia@infai.org.

Organisation

– Enno Meijers, National Library of the Netherlands & Dutch DBpedia

– Lieke Verhelst, Linked Data Factory, Informagic & Dutch DBpedia

– Victor de Boer, Vrije Universiteit Amsterdam & Dutch DBpedia

– Roland Cornelissen, metamatter & Dutch DBpedia

– Gerald Wildenbeest, Saxion & Dutch DBpedia

– Gerard Kuys, Ordina & Dutch DBpedia

– Maarten Brinkerink, The Netherlands Institute for Sound and Vision & Dutch DBpedia

– Julia Holze, DBpedia Association

– Dimitris Kontokostas, DBpedia Chapter Coordinator

– Sebastian Hellmann, AKSW/KILT, DBpedia Association

 

We are looking forward to meeting you in Amsterdam!

Check our website for further updates, follow us on #twitter or subscribe to our newsletter.

Your DBpedia Association