BabelNet

BabelNet 

1. Overview 

BabelNet is a semantic network akin to Wordnet. It includes some relations between concepts (synsets) that seem to be derived from several places, esp. Wikipedia/Wikidata. It is highly multilingual. 

2. Top-level 

https://babelnet.org/how-to-use 

3. Key characteristics 

A sophisticated lexical ontology is used for the backbone lexical information.  

SKOS is used for the conceptual information.  

4. Relevant extracts 

BabelNet is an innovative multilingual encyclopedic dictionary, with wide lexicographic and encyclopedic coverage of terms, and a semantic network/ontology which connects concepts and named entities in a very large network of semantic relations, made up of about 20 million entries. Conceived within the Sapienza NLP Group, engineered and maintained by Babelscape, BabelNet follows the WordNet model based on the notion of synset (for synonym set), but extends it to contain multilingual lexicalizations. Each BabelNet synset represents a given meaning and contains all the synonyms which express that meaning in a range of different languages. 

https://babelnet.org/about 

BabelNet encodes knowledge as a labeled directed graph G = (V , E) where V is the set of nodes – i.e., concepts such as play and named entities such as Shakespeare – and E ⊆ V × R × V is the set of edges connecting pairs of concepts (e.g., play is-a dramatic composition). Each edge is labeled with a semantic relation from R, i.e., {is-a, part-of,..., }, where denotes an unspecified semantic relation. Importantly, each node v ∈ V contains a set of lexicalizations of the concept for different languages, e.g., {playen, Theaterstückde, drammait, obraes, ... , pièce de théâtrefr}. We call such multilingually lexicalized concepts Babel synsets. Concepts and relations in BabelNet are harvested from the largest available semantic lexicon of English, WordNet, and a wide-coverage collaboratively-edited encyclopedia, Wikipedia (introduced in Section 2). (Navigli and Ponzetto, 2012) 

R. Navigli and S. Ponzetto. BabelNet: The Automatic Construction, Evaluation and Application of a Wide-Coverage Multilingual Semantic Network. Artificial Intelligence, 193, Elsevier, 2012, pp. 217-250