Exploració per autor "Boixader Ibáñez, Dionís"
Ara es mostren els items 18-37 de 45
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Fuzzy actions
(2017-01-01)
Article
Accés obertThis paper generalizes (fuzzifies) actions of a monoid or group on a set to deal with situations where imprecision and uncertainty are present. Fuzzy actions can handle the granularity of a set or even create it by defining ... -
G-shells:flat collapsible geodesic mechanisms for gridshells
(International Centre for Numerical Methods in Engineering (CIMNE), 2019)
Comunicació de congrés
Accés obertWe present G-shells, a new strategy for deployable elastic gridshells developed from an initially flat and compact geodesic mechanism. The one-degree of freedom mechanism evolves from its initially flat state into a geodesic ... -
Generation and Characterization of Fuzzy T-preorders
(2015-05-28)
Article
Accés obertThis article studies T-preorders that can be generated in a natural way by a single fuzzy subset. These T-preorders are called one-dimensional and are of great importance, because every T-preorder can be generated by ... -
Indistinguishability operators with respect to different t-norms
(2012-04)
Article
Accés restringit per política de l'editorialAn isomorphism f between two continuous Archimedean t-norms T and T′ transforms a T-indistinguishability operator E into a T′-indistinguishability operator f ∘ E and many interesting properties of E are transfered to f ∘ ... -
Introducing Strong T-transitivity in Approximate Fuzzy Preorders and Equivalences
(IEEE Computer Society Publications, 2010)
Text en actes de congrés
Accés restringit per política de l'editorial -
Logical methods in artificial intelligence applications
(2017-09-01)
Article
Accés obert -
On the degree of transitivity of a fuzzy relation
(2021-01-01)
Article
Accés obertConsidering a family generated from a t-norm T, the degree of T-transitivity of a fuzzy relation R is revisited and proved to coincide with the greatest c for which R is -transitive. This fact gives rise to the study of ... -
On the relationship between fuzzy subgroups and indistinguishability operators
(2018-09-06)
Article
Accés obertFuzzy subgroups are revisited considering their close relationship with indistinguishability operators (fuzzy equivalences) invariant under translations. Different ways to obtain new fuzzy subgroups from a given one are ... -
On the relationship between T-transitivity and approximate equality
(2003-01)
Article
Accés restringit per política de l'editorialThe paper discusses the suitability of T-transitivity for modelling approximate equality. It explains how T-transitivity, a property suitable for modelling vagueness, can still be used to handle the imprecision inherent ... -
On the unidimensional fuzzy equivalence relations
(Wiley InterScience, 1999-09)
Article
Accés restringit per política de l'editorialThe dimension of a fuzzy equivalence relation is the minimum number of fuzzy sets needed to generate it. A general theorem is proved that characterizes unidimensional fuzzy equivalence relations. The multidimensional case ... -
One-dimensional T-preorders
(IOS Press, 2014)
Text en actes de congrés
Accés obertThis paper studies T-preorders by using their Representation Theorem that states that every T-preorder on a set X can be generated in a natural way by a family of fuzzy subsets of X. Especial emphasis is made on the study ... -
Operadores de T-indistinguibilidad respecto a sumas ordinales
(2014)
Text en actes de congrés
Accés obertEn este trabajo se estudia la clase de operadores de T-indistinguibilidad con T una suma ordinal. Mostramos que estos operadores de T-indistinguibilidad pueden pensarse como familias de operadores de indistinguibilidad ... -
Powers with respect to t-norms and t-conorms and Aggregation Functions
(Springer, 2016)
Capítol de llibre
Accés restringit per política de l'editorialAggregation functions A stable with respect to powers of t-norms and t-conorms (i.e.: satisfying A(x^{(r)},y^{(r)})=(A(x,y))^{(r)}) where x^{(r)} is the r-th power of x \in [0,1] with respect to a t-norm or t-conorm) are ... -
Problemes i exercicis de Matemàtiques II
(Universitat Politècnica de Catalunya, 2013)
Problema, exercici
Accés obert -
Reduction of attributes in averaged similarities
(2018-02-01)
Article
Accés obertSimilarity Relations may be constructed from a set of fuzzy attributes. Each fuzzy attribute generates a simple similarity, and these simple similarities are combined into a complex similarity afterwards. The Representation ... -
Reflexividad y T-transitividad aproximadas
(2010)
Text en actes de congrés
Accés obert -
Searching for meaning on defuzzification
(1999-10)
Article
Accés restringit per política de l'editorialDefuzzification is an essential problem in fuzzy systems that it is always solved in a heuristic way. The aim of this work is to give a semantic interpretation to this process with the help of indistinguishability operators -
Some properties concerning the quasi-inverse of a t-norm
(Universitat Politècnica de Catalunya. Secció de Matemàtiques i Informàtica, 1998)
Article
Accés obertSome properties of the quasi-inverse operators are presented. They are basic tools in order to reduce complex expressions involving several of such operators. An effective calculation for the quasi-inverse of a continuous ... -
Some properties concerning the quasi-inverse of a T-norm
(1998-02)
Article
Accés obertSome properties of the quasi-inverse operators are presented. They are basic tools in order to reduce complex expressions involving several of such operators. An effective calculation for the quasi-inverse of a continuous ... -
Special issue on pattern recognition techniques in data mining
(Elsevier, 2017-07-01)
Article
Accés obert
