{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T22:07:30Z","timestamp":1790633250463,"version":"4.1.0"},"reference-count":38,"publisher":"World Scientific Pub Co Pte Lt","issue":"04","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Int. J. Unc. Fuzz. Knowl. Based Syst."],"published-print":{"date-parts":[[2012,8]]},"abstract":"<jats:p> Ontologies have succeeded as a knowledge representation formalism in many domains of application. Nevertheless, they are not suitable to represent vague or imprecise information. To overcome this limitation, several extensions to classical ontologies based on fuzzy logic have been proposed. Even though different fuzzy logics lead to fuzzy ontologies with very different logical properties, the combined use of different fuzzy logics has received little attention to date. This paper proposes a fuzzy extension of the Description Logic [Formula: see text] \u2014 the logic behind the ontology language OWL 2 \u2014 that joins G\u00f6del and Zadeh fuzzy logics. We analyze the properties of the new fuzzy Description Logic in order to provide guidelines to ontology developers to exploit the best features of each fuzzy logic. The proposal also considers degrees of truth belonging to a finite set of linguistic terms rather than numerical values, thus being closer to real experts' reasonings. We prove the decidability of the combined logic by presenting a reasoning preserving procedure to obtain a crisp representation for it. This result is generalized to offer a similar reduction that can be applied when any other finite t -norms, t -conorms, negations or implications are considered in the logic. <\/jats:p>","DOI":"10.1142\/s0218488512500249","type":"journal-article","created":{"date-parts":[[2012,8,2]],"date-time":"2012-08-02T05:56:44Z","timestamp":1343887004000},"page":"475-508","source":"Crossref","is-referenced-by-count":42,"title":["JOINING G\u00d6DEL AND ZADEH FUZZY LOGICS IN FUZZY DESCRIPTION LOGICS"],"prefix":"10.1142","volume":"20","author":[{"given":"FERNANDO","family":"BOBILLO","sequence":"first","affiliation":[{"name":"Department of Computer Science and Systems Engineering, University of Zaragoza, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MIGUEL","family":"DELGADO","sequence":"additional","affiliation":[{"name":"Department of Computer Science and Artificial Intelligence, University of Granada, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"JUAN","family":"G\u00d3MEZ-ROMERO","sequence":"additional","affiliation":[{"name":"Applied Artificial Intelligence Group, University Carlos III, Madrid, Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"UMBERTO","family":"STRACCIA","sequence":"additional","affiliation":[{"name":"Istituto di Scienza e Tecnologie dell'Informazione (ISTI-CNR), Pisa, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"219","published-online":{"date-parts":[[2012,8]]},"reference":[{"key":"rf1","doi-asserted-by":"publisher","DOI":"10.1038\/scientificamerican0501-34"},{"key":"rf2","doi-asserted-by":"publisher","DOI":"10.1006\/knac.1993.1008"},{"key":"rf3","doi-asserted-by":"publisher","DOI":"10.1016\/j.websem.2008.05.001"},{"key":"rf4","volume-title":"The Description Logic Handbook: Theory, Implementation, and Applications","author":"Baader F.","year":"2003"},{"key":"rf5","doi-asserted-by":"publisher","DOI":"10.1007\/978-3-540-32254-2_14"},{"key":"rf7","series-title":"Capturing Intelligence","volume-title":"Fuzzy Logic and the Semantic Web","volume":"1","author":"Sanchez E.","year":"2006"},{"key":"rf8","doi-asserted-by":"publisher","DOI":"10.1016\/j.eswa.2007.09.020"},{"key":"rf9","doi-asserted-by":"publisher","DOI":"10.1016\/j.websem.2008.04.001"},{"key":"rf10","doi-asserted-by":"publisher","DOI":"10.1002\/asi.20945"},{"key":"rf11","doi-asserted-by":"publisher","DOI":"10.1002\/int.20226"},{"key":"rf12","doi-asserted-by":"publisher","DOI":"10.1007\/s11760-008-0084-1"},{"key":"rf13","first-page":"105","volume":"14","author":"Dasiopoulou S.","journal-title":"J. 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