The Linguistic Computing Laboratory (LCL) is part of the Computer Science Department of the Sapienza University of Rome. The group conducts state-of-the-art research in the area of Natural Language Processing.

The group aims at devising and developing algorithms and methods in the context of machine learning, pattern matching and recognition and natural language processing to solve problems related to automatic text understanding, construction, learning and population of ontologies, semantic text indexing and classification, query expansion, question answering, etc.

Research fields include:
  • Word Sense Disambiguation and Induction
  • Ontology Learning and Population
  • Large-Scale Knowledge Acquisition
  • Semantic and Statistical Machine Translation
  • Semantic Information Retrieval
  • Social Network Analysis and Mining
BabelNet 3.0 is now out!

BabelNet ( is a very large multilingual encyclopedic dictionary and semantic network created by means of the seamless integration of the largest multilingual Web encyclopedia - i.e., Wikipedia - with the most popular computational lexicon of English - i.e., WordNet, and other lexical resources such as Wiktionary, OmegaWiki, Wikidata, and the Open Multilingual WordNet. The integration is performed via an automatic linking algorithm and by filling in lexical gaps with the aid of Machine Translation. The result is an encyclopedic dictionary that provides Babel synsets, i.e., concepts and named entities lexicalized in many languages and connected with large amounts of semantic relations.

Version 3.0 comes with the following features:
  • 271 languages now covered!

  • New RESTful API available via the BabelNet 3.0 beta program (open until January 31st, 2015)

  • Fully taxonomized thanks to the seamless integration of our Wikipedia Bitaxonomy

  • 13.7 million meanings (Babel synsets)

  • 40.3 million textual definitions

Tutorials in 2014

We are presenting tutorials at four different conferences:
Babelfy released!

We are happy to announce the release of Babelfy which is a unified approach to multilingual Word Sense Disambiguation and Entity Linking.
Babelfy website
ERC Starting Grant!

Prof. Roberto Navigli has been awarded a prestigious ERC starting grant in computer science and informatics (2011-2016). The project, called MultiJEDI, will focus on multilingual semantic processing. Many positions are open on the project.

Older news can be found here.