Linked data BabelNet,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. a very large multilingual semantic network with millions of concepts obtained by integrating WordNet and Wikipedia using an automatic mapping algorithm. The SUMO ontologyI. Niles, A. Pease 2001. Toward a Standard Upper Ontology: A large ontology for the Semantic Web and its applications. In Proceedings of the 2nd International Conference on Formal Ontology in Information Systems (FOIS-2001), has a complete manual mapping I. Niles, A. Pease 2003. Linking Lexicons and Ontologies: Mapping WordNet to the Suggested Upper Merged Ontology, In Proceedings of the IEEE International Conference on Information and Knowledge Engineering, pp 412-416 between all of the WordNet synsets and all of SUMO (including its domain ontologies, when WordNet contains a word sense for a given SUMO term) which is browsable at, for example . OpenCyc,S. Reed and D. Lenat. 2002. Mapping Ontologies into Cyc. In Proc. of AAAI 2002 Conference Workshop on Ontologies For The Semantic Web, Edmonton, Canada, 2002 an open ontology and knowledge base of everyday common sense knowledge, has 12,000 terms linked to WordNet synonym sets. DOLCE,Masolo, C., Borgo, S., Gangemi, A., Guarino, N., Oltramari, A., Schneider, L.S. 2002. WonderWeb Deliverable D17. The WonderWeb Library of Foundational Ontologies and the DOLCE ontology. Report (ver. 2.0, 15-08-2002) is the first module of the WonderWeb Foundational Ontologies Library (WFOL). This upper-ontology has been developed in light of rigorous ontological principles inspired by the philosophical tradition, with a clear orientation toward language and cognition. OntoWordNetGangemi, A., Guarino, N., Masolo, C., Oltramari, A. 2003 Sweetening WordNet with DOLCE. In AI Magazine 24(3): Fall 2003, pp. 13–24 is the result of an experimental alignment of WordNet's upper level with DOLCE. It is suggested that such alignment could lead to an "ontologically sweetened" WordNet, meant to be conceptually more rigorous, cognitively transparent, and efficiently exploitable in several applications. DBpedia,C. Bizer, J. Lehmann, G. Kobilarov, S. Auer, C. Becker, R. Cyganiak, S. Hellmann, DBpedia – A crystallization point for the Web of Data. Web Semantics, 7(3), 2009, pp. 154–165 a database of structured information, is linked to WordNet. The eXtended WordNetS. M. Harabagiu, G. A. Miller, D. I. Moldovan. 1999. WordNet 2 – A Morphologically and Semantically Enhanced Resource. In Proc. of the ACL SIGLEX Workshop: Standardizing Lexical Resources, pp. 1–8. is a project at the University of Texas at Dallas which aims to improve WordNet by semantically parsing the glosses, thus making the information contained in these definitions available for automatic knowledge processing systems. It is freely available under a license similar to WordNet's. The GCIDE project produced a dictionary by combining a public domain Webster's Dictionary from 1913 with some WordNet definitions and material provided by volunteers. It was released under the copyleft license GPL. ImageNet is an image database organized according to the WordNet hierarchy (currently only the nouns), in which each node of the hierarchy is depicted by millions of images.J. Deng, W. Dong, R. Socher, L. Li, K. Li, L. Fei-Fei. ImageNet: A Large-Scale Hierarchical Image Database. In Proc. of 2009 IEEE Conference on Computer Vision and Pattern Recognition Currently, it has over 500 images per node on average. BioWordnet, a biomedical extension of wordnet was abandoned due to issues about stability over versions.M. Poprat, E. Beisswanger, U. Hahn. 2008. Building a BIOWORDNET by Using WORDNET’s Data Formats and WORDNET’s Software Infrastructure – A Failure Story. In Proc. of the Software Engineering, Testing, and Quality Assurance for Natural Language Processing Workshop, pp. 31–39. WikiTax2WordNet, a mapping between WordNet synsets and Wikipedia categories.S. Ponzetto, R. Navigli. Large-Scale Taxonomy Mapping for Restructuring and Integrating Wikipedia, In Proc. of the 21st International Joint Conference on Artificial Intelligence (IJCAI 2009), Pasadena, California, July 14-17th, 2009, pp. 2083–2088. WordNet++, a resource including over millions of semantic edges harvested from Wikipedia and connecting pairs of WordNet synsets.S. P. Ponzetto, R. Navigli. Knowledge-rich Word Sense Disambiguation rivaling supervised systems. In Proc. of the 48th Annual Meeting of the Association for Computational Linguistics (ACL), 2010, pp. 1522–1531. SentiWordNet, a resource for supporting opinion mining applications obtained by tagging all the WordNet 3.0 synsets according to their estimated degrees of positivity, negativity, and neutrality.S. Baccianella, A. Esuli and F. Sebastiani. SentiWordNet 3.0: An Enhanced Lexical Resource for Sentiment Analysis and Opinion Mining. In Proceedings of the 7th Conference on Language Resources and Evaluation (LREC'10), Valletta, MT, 2010, pp. 2200–2204. ColorDict, is an Android application to mobiles phones that use Wordnet database and others, like Wikipedia. UBY-LMF a database of 10 resources including WordNet.
Linked data BabelNet,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. a very large multilingual semantic network with millions of concepts obtained by integrating WordNet and Wikipedia using an automatic mapping algorithm. The SUMO ontologyI. Niles, A. Pease 2001. Toward a Standard Upper Ontology A large ontology for the Semantic Web and its applications. In Proceedings of the 2nd International Conference on Formal Ontology in Information Systems (FOIS-2001), has a complete manual mapping I. Niles, A. Pease 2003. Linking Lexicons and Ontologies: Mapping WordNet to the Suggested Upper Merged Ontology, In Proceedings of the IEEE International Conference on Information and Knowledge Engineering, pp 412-416 between all of the WordNet synsets and all of SUMO (including its domain ontologies, when WordNet contains a word sense for a given SUMO term) which is browsable at, for example . OpenCyc,S. Reed and D. Lenat. 2002. Mapping Ontologies into Cyc. In Proc. of AAAI 2002 Conference Workshop on Ontologies For The Semantic Web, Edmonton, Canada, 2002 an open ontology and knowledge base of everyday common sense knowledge, has 12,000 terms linked to WordNet synonym sets. DOLCE,Masolo, C., Borgo, S., Gangemi, A., Guarino, N., Oltramari, A., Schneider, L.S. 2002. WonderWeb Deliverable D17. The WonderWeb Library of Foundational Ontologies and the DOLCE ontology. Report (ver. 2.0, 15-08-2002) is the first module of the WonderWeb Foundational Ontologies Library (WFOL). This upper-ontology has been developed in light of rigorous ontological principles inspired by the philosophical tradition, with a clear orientation toward language and cognition. OntoWordNetGangemi, A., Guarino, N., Masolo, C., Oltramari, A. 2003 Sweetening WordNet with DOLCE. In AI Magazine 24(3): Fall 2003, pp. 13–24 is the result of an experimental alignment of WordNet's upper level with DOLCE. It is suggested that such alignment could lead to an "ontologically sweetened" WordNet, meant to be conceptually more rigorous, cognitively transparent, and efficiently exploitable in several applications. DBpedia,C. Bizer, J. Lehmann G. Kobilarov, S. Auer, C. Becker, R. Cyganiak, S. Hellmann, DBpedia – A crystallization point for the Web of Data. Web Semantics, 7(3), 2009, pp. 154–165 a database of structured information, is linked to WordNet. The eXtended WordNetS. M. Harabagiu, G. A. Miller, D. I. Moldovan. 1999. WordNet 2 – A Morphologically and Semantically Enhanced Resource. In Proc. of the ACL SIGLEX Workshop: Standardizing Lexical Resources, pp. 1–8. is a project at the University of Texas at Dallas which aims to improve WordNet by semantically parsing the glosses, thus making the information contained in these definitions available for automatic knowledge processing systems. It is freely available under a license similar to WordNet's. The GCIDE project produced a dictionary by combining a public domain Webster's Dictionary from 1913 with some WordNet definitions and material provided by volunteers. It was released under the copyleft license GPL. ImageNet is an image database organized according to the WordNet hierarchy (currently only the nouns), in which each node of the hierarchy is depicted by millions of images.J. Deng, W. Dong, R. Socher, L. Li, K. Li, L. Fei-Fei. ImageNet: A Large-Scale Hierarchical Image Database. In Proc. of 2009 IEEE Conference on Computer Vision and Pattern Recognition Currently, it has over 500 images per node on average. BioWordnet, a biomedical extension of wordnet was abandoned due to issues about stability over versions.M. Poprat, E. Beisswanger, U. Hahn. 2008. Building a BIOWORDNET by Using WORDNET’s Data Formats and WORDNET’s Software Infrastructure – A Failure Story. In Proc. of the Software Engineering, Testing, and Quality Assurance for Natural Language Processing Workshop pp. 31–39. WikiTax2WordNet, a mapping between WordNet synsets and Wikipedia categories.S. Ponzetto, R. Navigli. Large-Scale Taxonomy Mapping for Restructuring and Integrating Wikipedia, In Proc. of the 21st International Joint Conference on Artificial Intelligence (IJCAI 2009), Pasadena, California, July 14-17th, 2009, pp. 2083–2088. WordNet++, a resource including over millions of semantic edges harvested from Wikipedia and connecting pairs of WordNet synsets.S. P. Ponzetto, R. Navigli. Knowledge-rich Word Sense Disambiguation rivaling supervised systems. In Proc. of the 48th Annual Meeting of the Association for Computational Linguistics (ACL), 2010, pp. 1522–1531. SentiWordNet, a resource for supporting opinion mining applications obtained by tagging all the WordNet 3.0 synsets according to their estimated degrees of positivity, negativity, and neutrality.S. Baccianella, A. Esuli and F. Sebastiani. SentiWordNet 3.0: An Enhanced Lexical Resource for Sentiment Analysis and Opinion Mining. In Proceedings of the 7th Conference on Language Resources and Evaluation (LREC'10), Valletta, MT, 2010, pp. 2200–2204. ColorDict, is an Android application to mobiles phones that use Wordnet database and others, like Wikipedia. UBY-LMF a database of 10 resources including WordNet.