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What and Who
Title:(Digital) Goodies from the ERC Wishing Well: BabelNet, Babelfy, video games with a purpose and the Wikipedia bitaxonomy
Speaker:Prof. Dr. Roberto Navigli
coming from:Sapienza University Rome
Speakers Bio:

Roberto Navigli is an Associate Professor in the Department of Computer Science of the Sapienza
University of Rome. He was awarded the Marco Cadoli 2007 AI*IA Prize for the best doctoral thesis in
Artificial Intelligence and the Marco Somalvico 2013 AI*IA Prize for the best young researcher in AI.
He is the recipient of an ERC Starting Grant in computer science and informatics on multilingual word
sense disambiguation (2011-2016) and a co-PI of a Google Focused Research Award on Natural Language
His research lies in the field of Natural Language Processing (including word sense disambiguation
and induction, ontology learning from scratch, large-scale knowledge acquisition, open information
extraction and relation extraction).
He has served as an area chair of ACL, WWW, and *SEM, and a senior program committee member of IJCAI.
Currently he is an Associate Editor of the Artificial Intelligence Journal, a member of the editorial
board of the Journal of Natural Language Engineering, a guest editor of the Journal of Web Semantics,
and a former editorial board member of Computational Linguistics.

Event Type:Talk
Visibility:D1, D2, D3, D4, D5, SWS, RG1, MMCI
We use this to send out email in the morning.
Level:Public Audience
Date, Time and Location
Date:Monday, 21 July 2014
Duration:75 Minutes
Building:E1 4
Multilinguality is a key feature of today’s Web, and it is this feature that we leverage and exploit
in our research work at the Sapienza University of Rome’s Linguistic Computing Laboratory, which I am
going to overview and showcase in this talk.
I will start by presenting BabelNet 2.5 (, a very large multilingual encyclopedic
dictionary and semantic network, which covers 50 languages and provides both lexicographic and
encyclopedic knowledge for all the open-class parts of speech, thanks to the seamless integration of
WordNet, Wikipedia, Wiktionary, OmegaWiki, Wikidata and the Open Multilingual WordNet.
Next, I will present Babelfy (, a unified approach that leverages BabelNet to
perform word sense disambiguation and entity linking in arbitrary languages, with performance on both
tasks on a par with, or surpassing, those of task-specific state-of-the-art supervised systems.
In the third part of the talk I will present two approaches to large-scale knowledge acquisition and
validation: video games with a purpose, a novel, powerful paradigm for the large scale acquisition
and validation of knowledge and data, and WiBi (, our approach to the
construction of a Wikipedia bitaxonomy, that is, the largest and most accurate currently available
taxonomy of Wikipedia pages and a taxonomy of categories, aligned to each other.
Name(s):Petra Schaaf
EMail:--email address not disclosed on the web
Video Broadcast
Video Broadcast:NoTo Location:
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Attachments, File(s):
  • Petra Schaaf, 06/23/2014 02:04 PM
  • Petra Schaaf, 06/23/2014 02:03 PM -- Created document.