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The linguistic pattern of each segment is automatically generated to serve initially as a learning model. Each pattern is composed of named entities, keywords and articulation words. Some generic named entities like organizations, persons, locations, dates and grammatical annotations are generated by an automatic tool. During the learning step, each relevant segment is manually annotated with respect to the targeted entities (roles) structuring an event of the ontology. Information extraction is processed by associating a role with a specific entity. By alignment of generic entities to specific entities, some strings of a text are automatically annotated. An original learning approach is presented. Experiments with the management change event showed how recognition rates are improved by using different generalization tools.<\/jats:p>","DOI":"10.1177\/0165551512464140","type":"journal-article","created":{"date-parts":[[2012,11,20]],"date-time":"2012-11-20T22:10:20Z","timestamp":1353449420000},"page":"211-224","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":11,"title":["General learning approach for event extraction: Case of management change event"],"prefix":"10.1177","volume":"39","author":[{"given":"Samir","family":"Elloumi","sequence":"first","affiliation":[{"name":"Department of Computer Science and Engineering, Qatar University, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ali","family":"Jaoua","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Engineering, Qatar University, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fethi","family":"Ferjani","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Engineering, Qatar University, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nasredine","family":"Semmar","sequence":"additional","affiliation":[{"name":"CEA, LIST, Vision and Content Engineering Laboratory, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Romaric","family":"Besan\u00e7on","sequence":"additional","affiliation":[{"name":"CEA, LIST, Vision and Content Engineering Laboratory, France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jihad","family":"Al-Jaam","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Engineering, Qatar University, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Helmi","family":"Hammami","sequence":"additional","affiliation":[{"name":"College of Business and Economics, Qatar University, Qatar"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"179","published-online":{"date-parts":[[2012,11,20]]},"reference":[{"key":"bibr1-0165551512464140","doi-asserted-by":"crossref","first-page":"466","DOI":"10.3115\/992628.992709","volume-title":"Proceedings of the 16th conference on Computational linguistics","volume":"1","author":"Grishman R"},{"key":"bibr2-0165551512464140","volume-title":"Encyclopedia of Language and Linguistics","author":"Cunningham H.","year":"2006"},{"key":"bibr3-0165551512464140","volume-title":"The Oxford handbook of computational linguistics","author":"Grishman R.","year":"2003"},{"key":"bibr4-0165551512464140","doi-asserted-by":"publisher","DOI":"10.1561\/1900000003"},{"key":"bibr5-0165551512464140","doi-asserted-by":"publisher","DOI":"10.1177\/0165551509360123"},{"key":"bibr6-0165551512464140","first-page":"150","volume-title":"Advances in natural language processing, 7th international conference on NLP, IceTAL","volume":"6233","author":"Ludovic JL"},{"key":"bibr7-0165551512464140","volume-title":"Proceedings of the seventh conference on international language resources and evaluation (LREC\u201910)","author":"Besan\u00e7on R"},{"key":"bibr8-0165551512464140","doi-asserted-by":"publisher","DOI":"10.3115\/1075671.1075701"},{"key":"bibr9-0165551512464140","volume-title":"Proceedings of the sixth workshop on very large corpora","author":"Sekine S","year":"1998"},{"key":"bibr10-0165551512464140","doi-asserted-by":"crossref","first-page":"152","DOI":"10.3115\/1119176.1119197","volume-title":"Proceedings of the seventh conference on natural language learning at HLT-NAACL","volume":"4","author":"Carreras X"},{"issue":"2","key":"bibr11-0165551512464140","first-page":"155","volume":"4","author":"Ekbal A","year":"2008","journal-title":"International Journal of Computer Systems Science and Engineering"},{"key":"bibr12-0165551512464140","first-page":"1","volume-title":"Proceedings of the 19th international conference on computational linguistics","volume":"1","author":"Isozaki H"},{"key":"bibr13-0165551512464140","unstructured":"Borthwick AE. 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