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Rodríguez González, Juan Tinguaro Franco De Los Ríos, Camilo A. Montero De Juan, Francisco Javier 2023-06-20T05:44:43Z 2023-06-20T05:44:43Z 2012 Rodríguez, J.T., Franco, C.A., Montero, J.: On the Semantics of Bipolarity and Fuzziness. En: Melo-Pinto, P., Couto, P., Serôdio, C., Fodor, J., y De Baets, B. (eds.) Eurofuse 2011. pp. 193-205. Springer Berlin Heidelberg, Berlin, Heidelberg (2011) 978-3-642-24000-3 10.1007/978-3-642-24001-0_19 https://hdl.handle.net/20.500.14352/45385 https//doi.org/10.1007/978-3-642-24001-0_19 https://springerlink3.metapress.com/content/f768615h31jt2417/resource-secured/?target=fulltext.pdf&sid=gtovfdpyjxo5e0bshdgo55ss&sh=www.springerlink.com This paper analyzes the relationship between fuzziness and bipolarity, notions which were devised to address different kinds of uncertainty: linguistic imprecision, in the former, and knowledge relevance and character or polarity, in the latter. Although different types of fuzziness and bipolarity have been defined, these relations are not always clear. This paper proposes the use of four-valued extensions to provide a formal method to rigorously define and compare the semantics and logical structure of diverse combinations of fuzziness and bipolarity types. As a result, this paper claims that these notions and their different types are independent and not semantically equivalent despite its possible formal equivalence. eng open access On the Semantics of Bipolarity and Fuzziness book part