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BabelNet
BabelNet is a multilingual lexicalized semantic network and ontology developed at the Linguistic Computing Laboratory in the Department of Computer Science of the Sapienza University of Rome.〔R. Navigli and S. P Ponzetto. 2012. (BabelNet: The Automatic Construction, Evaluation and Application of a Wide-Coverage Multilingual Semantic Network ). Artificial Intelligence, 193, Elsevier, pp. 217-250.〕〔R. Navigli, S. P. Ponzetto. (BabelNet: Building a Very Large Multilingual Semantic Network ). Proc. of the 48th Annual Meeting of the Association for Computational Linguistics (ACL 2010), Uppsala, Sweden, July 11–16, 2010, pp. 216–225.〕 BabelNet was automatically created by linking the largest multilingual Web encyclopedia, Wikipedia, to the most popular computational lexicon of the English language, WordNet. The integration is performed by means of an automatic mapping and by filling in lexical gaps in resource-poor languages with the aid of statistical machine translation. The result is an "encyclopedic dictionary"
that provides concepts and named entities lexicalized in many languages and connected with large amounts of semantic relations. Additional lexicalizations and definitions are added by linking to free-license wordnets, OmegaWiki, the English Wiktionary and Wikidata. Similarly to WordNet, BabelNet groups words in different languages into sets of synonyms, called ''Babel synsets''. For each Babel synset, BabelNet provides short definitions (called glosses) in many languages harvested from both WordNet and Wikipedia.
==Statistics of BabelNet==
, BabelNet (version 3.0) covers 271 languages, including all European languages, most Asian languages, and even Latin. BabelNet 3.0 contains almost 14 million synsets and about 117 million word senses (regardless of their language). Each Babel synset contains 2 synonyms per language, i.e., word senses, on average. The semantic network includes all the lexico-semantic relations from WordNet (hypernymy and hyponymy, meronymy and holonymy, antonymy and synonymy, etc., totaling around 364,000 relation edges) as well as an underspecified relatedness relation from Wikipedia (totaling around 350 million relation edges).〔 Version 3.0 also associates about 11 million images with Babel synsets and provides a Lemon RDF encoding of the resource.,〔M. Ehrmann, F. Cecconi, D. Vannella, J. McCrae, P. Cimiano, R. Navigli. (Representing Multilingual Data as Linked Data: the Case of BabelNet 2.0 ). Proc. of the 9th Language Resources and Evaluation Conference (LREC 2014), Reykjavik, Iceland, 26–31 May 2014.〕 available via a SPARQL endpoint.
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