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AI challenge on SemEval2018

How to detect events in the news and count them?

We are running a new AI challenge on SemEval2018:

Task 5: Counting events and event participants in news articles with a very ‘long tail’. If you are interested and if you want to try this, check out:…/

AI truly tested!


Co-organizer workshop Events and Stories in the News @ACL2017



Co-organizer of the workshop Events and Stories in the News co-located with the Annual Meeting of the Association for Computational Linguistics (ACL2017), Vancouver, Canada, August 4, 2017.

Interview Brandpunt-KRO/NCRV



Interview Brandpunt-KRO/NCRV: “De angst van deze hoogleraar: dat iedereen straks weer denkt dat de aarde plat is”.


2nd Call for Papers @ 9th Global WordNet Conference 2018

As co-president and founder of the Global Wordnet Association I am pleased to announce the 9th International Global Wordnet Conference (GWC2018), to be held in Singapore from January 8-12, 2018. This conference is hosted by the Computational Linguistics Lab at Nanyang Technological University, Singapore and the Global WordNet Association.

9th Global Wordnet Conference, Singapore

January 8-12, […]

Call for papers workshop SLT-1: Semantics of the Long Tail @ IJCNLP2017


It is a pleasure to invite you to the workshop SLT-1: Semantics of the Long Tail (descending into the Long Tail: from abundant to sparse details in the semantic processing of language), initiated by Piek Vossen, Filip Ilievski and Marten Postma. The workshop is co-located with the IJCNLP 2017 conference, which is organized by the Asian […]

Workshop SemEval-2018 Task accepted: Counting Events and Participants in the Long Tail


Marten Postma, Filip Ilievski, and Piek Vossen are hosting task 5 at SemEval-2018, entitled “Counting Events and Participants within Highly Ambiguous Data covering a very Long Tail”. This is a “referential quantification” task that requires systems to establish the meaning, reference and identity of events and participants in news articles. The task data […]

Member Koninklijke Nederlandse Akademie van Wetenschappen (KNAW)


Vossen has been appointed as one of the 26 new members of the Koninklijke Nederlandse Akademie van Wetenschappen (KNAW). The 26 new members include this year’s selection of 16 top women scientists and scholars for membership with reference to the Westerdijkjaar.

Vossen has been nominated in the cross domain section of the KNAW, which is exceptional. He now […]

Talk @ SIKS mini symposium “Proximity in Information Retrieval”


Talk on “NewsReader: aggregating event-centric-knowledge graphs from massive streams of news” at Netherlands Research School for Information and Knowledge Systems (SIKS) mini symposium “Proximity in Information Retrieval“, Delft University of Technology, April 26, 2017.

Interview Radio NPO1 on fake news


Interview by Reporter Radio on  “Fake news, misinformatie en alternatieve feiten“, Dutch National Radio 1/NPO1, April 23, 2017, p.m.




Organizer NIAS-Lorentz workshop “Language, Knowledge and People in Perspective”, April 18-21, 2017.

Download the PDF file .

Organizer of the NIAS-Lorentz workshop “Language, Knowledge and People in Perspective“, April 18-21, 2017.

Project website: Lorentz Center website:

There is no such thing as simple text.

A gathering of academics in tech, social science & media studies to discuss fake news and true news, but also everything in between.